Answer:
See below
Step-by-step explanation:
Expand to get x^2 - 8x + 40 = 0
a = 1 b = -8 c = 40
When 4 um is converted to m the answer
will be
10-6
To calculate the volume of this prism, we could just find the area of the surface of the triangle, and multiply by the lenght.
The area of the triangle is given by the product of height by the base, divided by 2:
\(A=\frac{h\times b}{2}\)Since we have the following data:
height = 8.7m
base of the triangle = 10m
lenght = 19m
The area of the base of this prism is:
\(A_T=\text{ }\frac{8.7\times10}{2}=43.5m^2\)Multiplying it by the lenght we get the volume of the prism:
\(V=43.5\times19=826.5m^3\)Now, to calculate the area of the surface, we can calculate the area of each face then add them up. We already calculate the area of the triangular bases, we just need to calculate the area of the rectangular faces.
The rectangular face area is given as the product of the lenght by the side of the base, then the area of the rectangular face is:
\(A_R=10\times19=190m^2\)Since we have 3 rectangular faces and two triagular basis, the surface area is given by:
\(A_S=3A_R+2A_T=3\times190+2\times43.5=657m^2\)Eliana loves music, especially 80's punk rock. Eliana looked at the number of songs in her itunes account and she has 6 less than 4 times her best friend. Eliana's classmate David has 3 more than double her best friend. When talking to her Social Studies teacher, Eliana found out social study teacher has 7 more than two times the number of songs in his library than Eliana. Define a variable, then write and solve an equation. If the total number of songs is 382, how many songs does Eliana, her best friend, David and her social study teacher have?
Answer
Step by step explantion:
bsf= 26
Eliana:98
SS teacher=203
David=55
Step-by-step explanation:
m= music
bsf: m
eliana:4m-6
David:2m+3
SS teacher: 2(4m-6)+7
m+4m-6+2m+3+8m-12+7
382=15m-7
7+ +7
389=15m
/15m /15m
m=26
multiply 26 to each one of them
Calc II Question
The base of s is an elliptical region with boundary curve 9x^2 + 4y^2 = 36
Cross sections perpendicular to the x axis are isoscelees right triangle with hypotension in the base.
Correct answer is 24 but I don't know how they go that
Answer:
See below for explanation
Step-by-step explanation:
The area of an isosceles triangle is \(A=\frac{1}{2}bh\), so let's write the base as an equation of y:
\(\displaystyle 9x^2+4y^2=36\\\\4y^2=36-9x^2\\\\y^2=9-\frac{9}{4}x^2\\\\y=\pm\sqrt{9-\frac{9}{4}x^2\)
As you can see, our ellipse consists of two parts, so the hypotenuse of each cross-section will be \(\displaystyle 2\sqrt{9-\frac{9}{4}x^2\), and each height will be \(\displaystyle \sqrt{9-\frac{9}{4}x^2}\).
Hence, the area function for our cross-sections are:
\(\displaystyle A(x)=\frac{1}{2}bh=\frac{1}{2}\cdot2\sqrt{9-\frac{9}{4}x^2}\cdot\sqrt{9-\frac{9}{4}x^2}=9-\frac{9}{4}x^2\)
Since we'll be integrating with respect to x because the cross-sections are perpendicular to the x-axis, then our bounds will be from -2 to 2 to find the volume:
\(\displaystyle V=\int^2_{-2}\biggr(9-\frac{9}{4}x^2\biggr)\,dx\\\\V=9x-\frac{3}{4}x^3\biggr|^2_{-2}\\\\V=\biggr(9(2)-\frac{3}{4}(2)^3\biggr)-\biggr(9(-2)-\frac{3}{4}(-2)^3\biggr)\\\\V=\biggr(18-\frac{3}{4}(8)\biggr)-\biggr(-18-\frac{3}{4}(-8)\biggr)\\\\V=(18-6)-(-18+6)\\\\V=12-(-12)\\\\V=12+12\\\\V=24\)
Therefore, this explanation confirms that the correct volume is 24!
Dan solves 6p = 5-3p in the way shown below. Which properties did Dan use for Step 1 and Step 2?
6p - 5 - 3p
Step 1: 6p + 3p - 5 - 3p + 3
Step 2: 6p + 3p = 5 + 0
Step 3:
9p - 5
Step 4:
P=
Both the addition Property of Equality and the Distributive Property
Both the Addition Property of Equality and the Additive identity Property
Both the addition Property of Equality and the Additive inverse Property
Both the Addition Inverse Property and the Additive Identity Property
Answer:
Step-by-step explanation:
Answer:
The answer is A
Step-by-step explanation:
Both the Addition property of equality and additive inverse property
A 4-yard dumpster cost $95.00 monthly how much would it cost for the year?
Answer options:
A) 190.00
B) 180.00
C) 170.00
D) 160.00
If a 4-yard dumpster cost $95.00 monthly, the total cost for the year is $1,140.
How is the total cost determined?The total cost for the year of the dumpster is the product of the multiplication of the monthly cost and 12.
Multiplication is one of the four basic mathematical operations, including addition, subtraction, and division.
In any multiplication, there must be the multiplicand (the number being multiplied), the multiplier (the number multiplying the multiplicand), and the product (or the result).
The monthly cost of the 4-yard dumpster = $95.00
1 year = 12 months
The total annual cost = $1,140 ($95 x 12)
Thus, using the multiplication operation, we can find that none of the options is correct as the total annual cost but $1,140.
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Sara gave 1/4
of her money to each of her 3 sisters. What fraction of her money
did she give away?
Answer:
3/4
Step-by-step explanation:
3*(1/4)=3/4
A local dry-cleaning company bought new equipment and its estimated useful life is 4 years. Using the straight-line depreciation method, what is the rate of depreciation each year?
Answer:
$2,500 or 25%
Step-by-step explanation:
Let's use the same example:
Cost of Equipment = $10,000
Useful Life = 4 years
Depreciation Rate = (Annual Depreciation / Cost of Equipment) * 100
Annual Depreciation = Cost of Equipment / Useful Life
Annual Depreciation = $10,000 / 4 years
Annual Depreciation = $2,500
Depreciation Rate = ($2,500 / $10,000) * 100
Depreciation Rate = 0.25 * 100
Depreciation Rate = 25%
The graph below shows the solutions to which inequality?
A. x^2-3x+3 ≥0
B. x² + 3x-3 <0
C. x²-3x+3<0
D. x² + 3x-3>0
The inequality expression that corresponds to the solution of the inequality graph is x² + 3x - 3 < 0.
option B.
What is the solution of the inequality?The inequality expression that corresponds to the solution of the inequality graph is determined by simplifying the equations as follows;
The solution of the graph,
x > -4 and x < 1
The first equation with "≥" is ruled out because the graph doesn't have a thick dot.
Let's simplify the second expression;
x² + 3x - 3 < 0
solve using quadratic formula;
x > -3.79 or x < 0.79
The third expression is ruled out since its solution will be complex.
For the last expression;
x² + 3x - 3 > 0
x < -3.79 or x > 0.79
Thus, the correct inequality expression is x² + 3x - 3 < 0.
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how do i find x pls help
In the given Quadrilateral, The measure of ∠x=110°.
what are quadrilaterals?
Quadrilaterals are four-sided polygons. They are two-dimensional shapes with four straight sides, four vertices, and four angles which have sum of 360°. Quadrilaterals can have parallel sides, opposite sides that are congruent, opposite angles that are congruent, and diagonals that bisect each other. Some examples of quadrilaterals include squares, rectangles, parallelograms, trapezoids, and rhombuses.
Now,
For given Quadrilateral
three angles given are 128°, 82° and 40° and 4th angle=x°.
To find x
As we know
Sum of all interior angles of a quadrilateral=360°
128°+82° +40° +x°=360°
x=360-250
x=110°
hence,
the measure of ∠x=110°.
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Margie makes a necklace using 14 purple beads for every 6 silver beads. The necklace contains 80 beads. How many of each color bead are in the necklace?
The quantity of each colour beads that are in the necklace include the following:
Purple beads = 56
Purple beads = 56silver beads = 24
Purple beads = 56silver beads = 24What is a ratio?A ratio is defined as the mathematical expression that shows the number of times one value is contained in another value.
The number of purple beads = 14
The number of silver beads ,= 6
The total quantity of beads = 80
Therefore the total combination = 14+6 = 20
For purple beads = 14/20 × 80/1
= 1120/20 = 56
For silver beads = 6/20×80/1
= 480/20= 24
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which expression is equivalent to 3x8
Mina has 462 flowers if she wants to put nine flowers in each phase how many for vases will she have how many flowers will she have left over
daca stim cel mai mare divizor comun si cel mai mic multiplu comun,in ce mod aflam produsul? (raspunsuri troll iau raport) (troll answers will get reported)
Answer: i think this is romanian? so here is the answer in romanian
Pur și simplu, cel mai mare factor comun al lui a și b atunci când este înmulțit cu cel mai mic comun al lui a și b este egal cu produsul lui a și b ....
Puteți determina LCM de 12 și 16 folosind două metode
Step-by-step explanation:
local salesman receives a base salary of $875 monthly. He also receives a commission of 6% on all sales over $1450. How much would he have to sell in a month if he needed to have a monthly income of $2800?
The total sales required to earn the desired income of $2800 is calculated to be $6,375.
What is sale?Sale is a business transaction involving the exchange of goods or services for money. It can refer to the act of selling, or the thing that is sold. Sales are typically the main source of revenue for businesses. The process of selling involves finding potential customers, negotiating a price, and delivering the product or service. The ultimate goal is to make a profit.
In order to earn a monthly income of $2800, a local salesman would need to sell $6,375 worth of goods in a month. This is calculated by subtracting the base salary of $875 from the desired income of $2800, which leaves $2,925. Then, 6% of $1450 is $87, so the remaining $2,838 must be made up of 6% of the sales above $1450. By dividing this amount by 6%, the total sales required to earn the desired income of $2800 is calculated to be $6,375.
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What is the image of (-9,12)(−9,12) after a dilation by a scale factor of \frac{1}{3} 3 1 centered at the origin?
The image of (-9,12) after a dilation by a scale factor of 1/3 centered at the origin is (-3,4).
In the given question,
We have to find the image of (-9,12) after a dilation by a scale factor of 1/3 centered at the origin.
Since we have to find the image after a dilation.
So we learn about it now,
Any scale factor will dilate the image of any coordinate. A specific scale factor can be used to scale the coordinate up or down. To determine the answer, consider the scale factor in the equation and multiply or divide the coordinates of dilation by the appropriate scale factor.
So the given point is (-9,12).
Scale factor is 1/3.
So the image of (-9,12) after a dilation by a scale factor of 1/3 centered at the origin is define as
=(-9×1/3,12×1/3)
Simplifying
=(-3,4)
Hence, the image of (-9,12) after a dilation by a scale factor of 1/3 centered at the origin is (-3,4).
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Given the points P (3, 5) and Q (-5, 7) on the cartesian plane such that R (x, y) is
the midpoint of PQ, find the equation of the line that passes through R and
perpendicular
to PQ.
Answer:
-22=22
Step-by-step explanation:
3,5-5,7=
-22/22
The equation of the line passing through R and PQ is 4(y - 6) = -x - 1/2.
To find the equation of the line passing through the midpoint R and the points P and Q, we first need to find the coordinates of the midpoint R. The midpoint coordinates can be found by taking the average of the x-coordinates and the average of the y-coordinates of P and Q.
The x-coordinate of the midpoint R is (3 + (-5)) / 2 = -1/2.
The y-coordinate of the midpoint R is (5 + 7) / 2 = 6.
So, the coordinates of the midpoint R are (-1/2, 6).
Next, we can use the two-point form of the equation of a line, which states that the equation of the line passing through points (x₁, y₁) and (x₂, y₂) is given by:
(y - y₁) = (y₂ - y₁) / (x₂ - x₁) \(\times\) (x - x₁)
Substituting the coordinates of R (-1/2, 6) and P (3, 5) into the equation, we have:
(y - 6) = (7 - 5) / (-5 - 3) \(\times\)(x - (-1/2))
Simplifying the equation:
(y - 6) = (2 / -8) \(\times\)(x + 1/2)
(y - 6) = -1/4 \(\times\)(x + 1/2)
4(y - 6) = -x - 1/2
Therefore, the equation of the line passing through R and PQ is 4(y - 6) = -x - 1/2.
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Trei correctly spelled 60% of the words on her last spelling test! how many words did she spell correctly for each word that she spelled wrong?
Let's call the number of words Trei spelled correctly "x". Then, the number of words she spelled incorrectly is 100 - 60 = 40 words.
Therefore, the ratio of correctly spelled words to incorrectly spelled words is x to 40.
To find the number of words she spelled correctly for each word she spelled wrong, we can simplify the ratio by dividing both values by the greatest common factor:
x / 40 = x / (2 * 20) = x / 2 * 20 / 2 = x / 20.
So for every word Trei spelled incorrectly, she spelled 20 / 1 = 20 words correctly.
Identify the range of the function shown in the graph.
A. {-2, 2}
B. -2 < y< 2
C. y> 0
D. yis all real numbers.
Given:
The graph of a function.
To find:
The range of the function.
Solution:
Range is the set of y-values or output values.
From the given graph it is clear that,
\(f(x)\to -\infty\text{ as }x\to -\infty\)
\(f(x)\to \infty\text{ as }x\to \infty\)
And the value function can be any real number. So,
Range = \(-\infty<y<\infty\)
Range = \((-\infty, \infty)\)
Range = y is all real numbers.
Therefore, the correct option is D.
Answer:
D. y is all real numbers.
Step-by-step explanation:
Range is the set of y-values or output values.
From the given graph it is clear that,
And the value function can be any real number. So,
Range =
Range =
Range = y is all real numbers.
Therefore, the correct option is D.
Which graph appears to show a linear proportional relationship between x and y?
A,B,C, or D
Answer:
Step-by-step explanation:
you're valuing horn of plenty mining, inc.'s, stock in order to compare its value to its market price. you believe that the company will pay total dividends of $1.45 in 2015 and $1.56 in 2016. you also believe the company's stock price will be $35.80 at the end of 2016. if the appropriate discount rate is 12 percent, what's the value of horn of plenty mining's stock? a. $39.22 b. $38.31 c. $36.87 d. $37.43
For each of the 4 walls of the house, John will need 9 large
planks of wood. If each plank of wood needs 8 pieces of nails
to be secured, how many nails does John need for each wall
of the house?
Type < or > to make this statement true -a___-b
The comparisons that are true are 11. -5 < 0 12. 9 > -8 14. 55 > -75 15. -32 < -24 16. 89 > 73 17. -58 < -51 19. 17 < 23 20. 18 > -36 and that is not true are 13. -7 = -7 (not true) 18. -32 > 4 (not true)
To make each statement true, write < or >. We need to compare two values for each statement to determine whether it is true or false.
To indicate that the first value is less than the second value, write <.
Alternatively, to indicate that the first value is greater than the second value, write >.
Below are the comparisons: 11. -5 < 0 12. 9 > -8 13. -7 > -7 14. 55 > -75 15. -32 < -24 16. 89 > 73 17. -58 < -51 18. -32 > 4 19. 17 > 23 20. 18 > -36
To determine the direction of inequality, we need to compare the values.
We used inequality signs such as > (greater than) or < (less than) to indicate which value is larger or smaller than the other.
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The correct question would be as
Write > or < to make each statement true.
11. -5 0
12. 9 -8
13. -7 7
14. 55 -75
15. -32 -24
16. 89 73
17. -58 -51
18. -32 4
19. 17 23
20. 18 -36
36÷[-3]+[-4]×3-[-4]
Answer:
-20
Step-by-step explanation:
36 ÷ [-3] + [-4] × 3 − [-4]
In order to calculate this expression, all we have to do is following the order of operations:
Since division and multiplication comes before addition and subtraction
Then
36 ÷ [-3] + [-4] × 3 − [-4]
= (36 ÷ [-3]) + ([-4] × 3) − [-4]
= (-12) + (-12) − [-4]
= ((-12) + (-12)) − [-4]
= (-12 − 12) − [-4] (Recall : + (-a) = - a )
= - (12 + 12) − [-4]
= - (24) − [-4]
= - (24) + 4 (Recall : - (-a) = a )
= - (24 - 4) (Recall : -a + b = - (a - b) )
= - (20)
= -20
What are three consecutive multiples of 3 if 2/3
of the sum of the first
two numbers is 1 greater than the third number?
The three consecutive multiples of 3 are 15, 18 and 21
To solve this problem
First, let's determine three successive multiples of 3:
The subsequent two would be "x+3" and "x+6" if we call the initial number "x".
Since we are aware that the third number (x+6) is one more than the first two numbers (x + x+3), we can write the following equation:
2/3(x + x+3) = (x+6) + 1
Simplifying this equation, we get:
2/3(2x+3) = x+7
Multiplying both sides by 3, we get:
2(2x+3) = 3(x+7)
Expanding and simplifying, we get:
4x + 6 = 3x + 21
Subtracting 3x and 6 from both sides, we get:
x = 15
Therefore, the three consecutive multiples of 3 are 15, 18 and 21
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Are the triangle similar
Answer:AAS
Step-by-step explanation:
The odds in favor of a horse winning a race are 7:4. Find the probability that the horse will win the race.
Answer:
7/11 = 0.6363...
Step-by-step explanation:
7 + 4 = 11
probability of winning: 7/11 = 0.6363...
The probability that the horse will in the race is \(\mathbf{\dfrac{7}{11}}\)
Given that the odds of the horse winning the race is 7:4
Assuming the ratio is in form of a:b, the probability of winning the race can be computed as:
\(\mathbf{P(A) = \dfrac{a}{a+b}}\)
From the given question;
The probability of the horse winning the race is:
\(\mathbf{P(A) = \dfrac{7}{7+4}}\)
\(\mathbf{P(A) = \dfrac{7}{11}}\)
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Q‒4. Suppose A is the set composed of all ordered pairs of positive integers. Let R be the relation defined on A where (a,b)R(c,d) means that a+d=b+c.
Prove that R is an equivalence relation.
Find [(2,4)].
Answer:
Step-by-step explanation:
REcall that given a set A, * is a equivalence relation over A if
- for a in A, then a*a.
- for a,b in A. If a*b, then b*a.
- for a,b,c in A. If a*b and b*c then a*c.
Consider A the set of all ordered pairs of positive integers.
- Let (a,b) in A. Then a+b = a+b. So, by definition (a,b)R(a,b).
- Let (a,b), (c,d) in A and suppose that (a,b)R(c,d) . Then, by definition a+d = b+c. Since the + is commutative over the integers, this implies that d+a = c+b. Then (c,d)R(a,b).
- Let (a,b),(c,d), (e,f) in A and suppose that (a,b)R(c,d) and (c,d)R(e,f). Then
a+d = b+c, c+f = d+e. We have that f = d+e-c. So a+f = a+d+e-c. From the first equation we find that a+d-c = b. Then a+f = b+e. So, by definition (a,b)R(e,f).
So R is an equivalence relation.
[(a,b)] is the equivalence class of (a,b). This is by definition, finding all the elements of A that are equivalente to (a,b).
Let us find all the possible elements of A that are equivalent to (2,4). Let (a,b)R(2,4) Then a+4 = b+2. This implies that a+2 = b. So all the elements of the form (a,a+2) are part of this class.
James opens a bank account. After receiving his debit card, it needs to determine four digits PINs. If he prefers not to use odd numbers on the first digits and 0 on the last digit, how many different ways to determine the debit card pin?
The required number of ways that a debit card pin can be set is 4500.
As given as, James opens a bank account. After receiving his debit card, it needs to determine four digits PINs. If he prefers not to use odd numbers on the first digits and 0 on the last digit, how many different ways to determine the debit card pin is to be determined.
What are permutation and combination?In arithmetic, combination and permutation are two different ways of grouping elements of a set into subsets. In a combination, the components of the subset can be recorded in any order. In a permutation, the components of the subset are listed in a distinctive order.
Here,
The number of ways to fill 1st number is 5C1,
The number of ways to fill 2nd number is 10C1,
The number of ways to fill 3rd number is 10C1,
The number of ways to fill 4th number is 9C1,
The number of ways to fill the 4-digit pin = ⁵C₁ × ¹⁰C₁ × ¹⁰C₁ × ⁹C₁
= 5 × 10 × 10 × 9 = 4500
Thus, The required number of ways to set a debit card pin is 4500.
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d) Suppose you begin making a monthly payment of $75.00. Fill in the table.
Month Current balance
1
2
3
4
5
6
7
8
9
10
11
12
WYPIE
$2750.00
Interest
$45.38
Payment
$75.00
$75.00
$75.00
$75.00
$75.00
$75.00
$75.00
$75.00
$75.00
$75.00
$75.00
$75.00
Amount applied to principal
$29.62
Answer:
Step-by-step explanation:
Answer:
For month 1, the current balance is $2750.00, the interest is $45.38, and the payment is $75.00. The amount applied to principal is $29.62.
For the remaining months, the interest and payment amount will stay the same, but the current balance and amount applied to principal will change based on the previous month's numbers.
Point of view:
Here's your answer but I prefer you to focus and study hard because school isn't that easy. But i'm glad I could help you!
:)
- Background Layout Theme Transition
ck to add speaker notes
DAY THREE: WATER
While you are on the island you will have the ability to collect units of
Water. You can collect a total of 1 unit of water per day. To be fair, I'll let
you start off with 1 unit of water. Everyday, you will only need to
consume 1 unit of water per day in order to survive.
1. What is your total units of water collected for day 3?
How much water did you consume?
2.
3. How much water do you have leftover?
4.
How did you go about collecting your water?
5. What tools did you use in this process?
To find the total units of water collected for day 3, we can simply add up the units of water collected on each day, starting with the 1 unit of water we already have:
Day 1: 1 unit of water
Day 2: 1 unit of water
Day 3: 1 unit of water
1. Total units of water collected for day 3 = 1 + 1 + 1 = 3 units of water
2. Since we only need to consume 1 unit of water per day to survive, we would have consumed a total of 3 units of water in 3 days.
3. To find the amount of water leftover, we can subtract the units of water consumed from the total units of water collected:
Total units of water collected = 3 units
Units of water consumed = 3 units
Water leftover = Total units of water collected - Units of water consumed
= 3 - 3
= 0 units of water leftover
4. We could collect water in a number of ways, depending on what resources were available on the island. We could collect rainwater using containers, or we could find a freshwater stream or well and collect water from there. We could also try to collect dew or moisture using a cloth or other absorbent material.
5. The tools we would use to collect water would depend on the method we chose. For example, if we were collecting rainwater, we would need containers to catch the water, such as buckets or barrels. If we were collecting water from a stream or well, we would need a way to transport the water back to our shelter, such as a jug or canteen. If we were collecting moisture, we would need a cloth or other absorbent material to collect the water.