Answer:
3/4 or 0.75
Step-by-step explanation:
Find the length of the line joining A (3,5) and B (1,3)
Answer:
2√2 units.
Step-by-step explanation:
To find the length of the line joining points A(3, 5) and B(1, 3), we can use the distance formula. The distance formula is given by:
d = sqrt((x2 - x1)^2 + (y2 - y1)^2)
Substituting the coordinates of points A and B into the formula, we have:
d = sqrt((1 - 3)^2 + (3 - 5)^2)
= sqrt((-2)^2 + (-2)^2)
= sqrt(4 + 4)
= sqrt(8)
= 2sqrt(2)
Therefore, the length of the line joining points A and B is 2√2 units.
(x2 +9) - (-7x2 – 3x + 9)
Answer:
8x²+3x
Step-by-step explanation:
What do the expanded form and a place- value chart tell you about a number such as 25,049?How are they alike and different
The expanded form of a number is written out in such a way that you would be able to see the math value of individual digits.
The number 25,049 which reads "twenty five thousand and forty nine," can be written in expanded form as follows;
2 x 10000 = 20,000
5 x 1000 = 5,000
0 x 100 = 0
4 x 10 = 40
9 x 1 = 9
So, as you can see the expanded form shows that the digit 2 (for example) in this number has a value of 20,000.
The place value chart groups the number in threes starting from the right to the left. That is, you count three numbers from the end (right hand side) insert a coma, and take the next three set of digits and so on. You can now tell the value of each digit by starting from the left (the begining) to the right (the end). Usually starting with billions, the chart now tells you the value of each digit. So in this question, you can read from left to right and by using the expanded form, you can tell the value of the 2, the 5, and so on till the last digit.
They are alike because the expanded form helps you determine the actual value of each digit without mistake, and the place value also tells you which number carries what value.
They are different because an expanded form gives you details of how each number gets its place value, while the place value chart simply tells you the value of each digit simply by arranging and inserting comas.
It has been observed that some persons who suffer acute heartburn, again suffer acute heartburn within one year of the first episode. This is due, in part, to damage from the first episode. The performance of a new drug designed to prevent a second episode is to be tested for its effectiveness in preventing a second episode. In order to do this two groups of people suffering a first episode are selected. There are 45 people in the first group and this group will be administered the new drug. There are 75 people in the second group and this group will be administered a placebo. After one year, 12% of the first group has a second episode and 14% of the second group has a second episode. Conduct a hypothesis test to determine, at the significance level 0.1, whether there is reason to believe that the true percentage of those in the first group who suffer a second episode is less than the true percentage of those in the second group who suffer a second episode.
A. [ z < -1.65, RHo].
B. [ z < -1.65 and z > 1.65, FRHo].
C. [z > 1.65, FRHo].
D. [z < -1.65 and z > 1.65, FRHo].
E. [z > -1.65 and z < 1.65, RHo].
F. None of the above.
Answer:
F. None of the above.
Step-by-step explanation:
Let the null and alternate hypothesis be
H0: p1 ≥ p2 against the claim Ha: p1 < p2
the significance level is 0.1
The critical region is z < z∝= 1.28
The test statistic is
Z= ( p^1-p^2)- (p1-p2)/√p1^q1^/n1 + p2^q2^/n2
Here n1= 45 , n2= 75
p1= 0.12 p2= 0.14
q1= 0.88 q2= 0.86
z= 0.12- 0.14/√0.12*0.88/45 +0.14*0.86/75
Z= 0.02/ √0.00235 + 0.00161
Z= 0.02/0.062891
z= 0.318
The calculated value of z= 0.318 lies in the critical region z < 1.28
therefore accept Ha.
All of the options are incorrect as the critical value for one tailed test for 0.1 is 1.28 .
Need some help with this one please
Answer: Choice A
y = (-3/4)(x + 4) + 6
=====================================================
Let's go through the answer choices
Choice A is something we'll come back toChoice B is false because the line does not go uphill as we move from left to right. The graphed line has a negative slope, which contradicts what choice B is saying.Choice C is false for similar reasons as choice B. The slope should be negative.Choice D has a negative slope, but the y intercept is wrong. The y intercept should be 3. So choice D is false as well.We've eliminated choices B through D.
Choice A must be the answer through process of elimination.
------------
Here's an alternative method:
If we started at a point like (0,3) and move to (4,0), note how the slope is -3/4
This is because we've moved down 3 units and to the right 4 units.
m = slope = rise/run = -3/4
We can also use the slope formula m = (y2-y1)/(x2-x1) to see this.
Then we pick on a point that is on the diagonal line. It could be any point really, but the point your teacher used for choice A is (x1,y1) = (-4,6)
So,
y - y1 = m(x - x1)
y - 6 = (-3/4)(x - (-4))
y - 6 = (-3/4)(x + 4)
y = (-3/4)(x + 4) + 6
Use the Remainder Theorem to find f(c).
f(x) = 5x5 + 2x3 - 5x2 - 3
C = 1
Answer:
f(c) = 5(c)^5+2(c)^3-5(c)^2-3
c = 1
F(1) = -1
Step-by-step explanation
1 → 5 0 2 -5 0 -3
↓ 5 5 7 2 2
5 0+5 2+5 -5+7 0+2 -3+2
5 5 7 2 2 -1
f(1) = 5(1)^5+2(1)^3-5(1)^2-3
f(1) = -1
For each pair of functions f and g below, find f(g(x)) and g (f(x)).
Then, determine whether fand g are inverses of each other.
Simplify your answers as much as possible.
(Assume that your expressions are defined for all x in the domain of the composition.
You do not have to indicate the domain.)
f(x) = x+4
g (x) = x+4
The Function f(g(x)) = g(f(x)) = x + 8.
The functions are: f(x) = x + 4 and g(x) = x + 4. We can find f(g(x)) by substituting g(x) in place of x in f(x).
f(g(x)) = f(x + 4) = (x + 4) + 4 = x + 8
Similarly, we can find g(f(x)) by substituting f(x) in place of x in g(x).g(f(x)) = g(x + 4) = (x + 4) + 4 = x + 8
Thus, we can see that f(g(x)) and g(f(x)) are equal to each other,
which is x + 8.
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1.
Tank A has a length, in feet, represented by 25x + 12 and a width, in feet, represented by 7x + 18. Write and simplify an expression used to determine the total amount of rubber stripping, in feet, needed for both rectangular tanks.
The value of the total amount of rubber stripping, in feet, needed for the rectangular tanks is 64x + 70.
How to calculate the perimeter?It should be noted that the perimeter of a rectangle is given as:
= 2(Length + Width)
= 2(25x + 12) + 2(7x + 18)
= 50x + 24 + 14x + 46
= 64x + 70
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Chase estimates that the wait time for a table at her favorite restaurant on Saturday evening is30 minutes. The actual wait time is 44.5 minutes. What is the percent error ofChase's estimate? Round the percent to the nearest tenth if necessary.
The percentage error can be calculated using a formula give as follows;
\(\begin{gathered} \delta=|\frac{\upsilon a-\upsilon e}{\upsilon e}|\times100 \\ \text{Where }\delta=percent\text{ error} \\ \upsilon a=actual\text{ value} \\ \upsilon e=\exp ected\text{ value} \\ \delta=|\frac{44.5-30}{30}|\times100 \\ \delta=|\frac{14.5}{30}|\times100 \\ \delta=0.4833\times100 \\ \delta=48.33 \\ \delta\approx48.3\text{ (to the nearest tenth)} \end{gathered}\)The percentage error rounded to the nearest tenth equals 48.3%
12 Complete the table to show equivalent times. Seconds Hours Minutes 210 8,400
Answer:
The easiest way to convert seconds to hours is to divide the number of seconds by 3,600. To understand the reason for this conversion, it can be helpful to set up conversion tables, in which you first convert the number of seconds to minutes, and then the number of minutes to hours.
NO LINKS! Please help me with this problem
Answer:
f(x) = x³ -4x² +9x +164
Step-by-step explanation:
When a function has a zero at x=p, it has a factor (x-p). When a polynomial function with real coefficients has a complex zero, its conjugate is also a zero.
Factored formGiven the two zeros and the one we can infer, we can factor our 3rd-degree polynomial function as ...
f(x) = a(x -(-4))·(x -(4+5i))·(x -(4-5i))
Real factorsUsing the factoring of the difference of squares, we can combine the complex factors to make a real factor.
f(x) = a(x +4)((x -4)² -(5i)²) = a(x +4)(x² -8x +16 +25)
Finding the scale factorThe value of this at x=1 is ...
f(1) = a(1 +4)(1 -8 +41) = 170a
We want f(1) = 170, so ...
170 = 170a ⇒ a=1
The factored polynomial function is ...
f(x) = (x +4)(x² -8x +41)
Standard formExpanding this expression, we have ...
f(x) = x(x² -8x +41) +4(x² -8x +41) = x³ -8x² +41x +4x² -32x +164
f(x) = x³ -4x² +9x +164
Graph
The attached graph verifies the real zero (x=-4) and the value at x=1. It also shows that the factor with complex roots has vertex form (x -4)² +25, exactly as it should be.
Answer:
\(f(x) = (x+4)(x^2-8x+41)\)
Step-by-step explanation:
Ok, so there are a couple of things to note here. The first thing is that there is a complex solution
Complex Conjugate Root Theorem:
if \(a-bi\) is a solution then \(a+bi\) is a solution and vice versa
Fundamental Theorem Of Algebra:
Any polynomial with a degree "n", will have "n" solutions. Those solutions can be real and imaginary numbers
So since we're given the root: \(4+5i\), we can use the Complex Conjugate Root Theorem to assert that: \(4-5i\) is also a solution.
So now we know 3 solutions/zeroes, and since n=3 (the degree), we can know for a fact that we have all the solutions due to the Fundamental Theorem of Algebra.
So using these roots, we can express the polynomial as it's factors. When you express a polynomial as factors it'll look something like so: \(f(x) = a(x-b)(x-c)(x-d)...\) where a, b, and d are zeroes of the polynomial. Also notice the "a" value? This will affect the stretch/compression of the polynomial.
So let's express the polynomial in factored form:
\(f(x) = a(x-(-4))(x-(4+5i))(x-(4-5i))\)
Simplify the x-(-4)
\(f(x) = a(x+4)(x-(4+5i))(x-(4-5i))\)
Now let's distribute the negative sign to the complex roots
\(f(x) = a(x+4)(x-4-5i)(x-4+5i))\)
Now let's rewrite the two factors (x-4-5i) and (x-4+5i) so the (x-4) is grouped together
\(f(x) = a(x+4)((x-4)-5i)((x-4)+5i))\)
If you look at the two complex factors, this looks very similar to the difference of squares: \((a-b)(a+b) = a^2-b^2\)
In this case a=(x-4) and b=5i. So let's use this identity to rewrite the two factors
\(f(x) = a(x+4)((x-4)^2-(5i)^2)\)
Let's expand out the (x-4)^2
\(f(x) = a(x+4)(x^2+2(-4)(x)+(-4)^2-(5i)^2)\)
Simplify
\(f(x) = a(x+4)(x^2-8x+16-(5i)^2)\)
Now simplify the (5i)^2 = 5^2 * i^2
\(f(x) = a(x+4)(x^2-8x+16-(-25))\)
Simplify the subtraction (cancels out to addition)
\(f(x) = a(x+4)(x^2-8x+41)\)
So just to check for the value of "a", we can substitute 1 as x, and set the equation equal to 170
\(170 = a(1+4)(1^2-8(1)+41)\\170 = a(5)(1-8+41)\\170 = a(5)(34)\\170 = 170a\\a=1\)
In this case it's just 1, so the polynomial can just be expressed as:
\(f(x) = (x+4)(x^2-8x+41)\)
The radius of a circle is 3 meters. What is the area of a sector bounded by a 90° arc?
Give the exact answer in simplest form.
Answer:
(90°/360°)π(3^2) = (1/4)(9π) = 9π/4 m²
Find the value of the length x rounded to 1 DP.
7m
39°
The diagram is not drawn accurately.
55%
x
The solution is, s = 273
What is arc length?Arc length formula is used to calculate the measure of the distance along the curved line making up the arc (a segment of a circle). In simple words, the distance that runs through the curved line of the circle making up the arc is known as the arc length.
here, we have,
r=7m
theta = 39°
we know, s= r*theta
i.e. s = 273
hence, The solution is, s = 273.
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Let g(x) be the indicated transformation of f(x) = −|3x| − 4. Stretch the graph of f(x) = −|3x| − 4 vertically by a factor of 3 and reflect it across the x-axis. Identify the rule and graph of g(x).
The final rule for g(x) is g(x) = 3|3x| + 12.
To stretch the graph of f(x) = −|3x| − 4 vertically by a factor of 3, we multiply the function by 3. This will result in a vertical stretching of the graph.
So, the rule for g(x) is g(x) = 3f(x).
Now, let's find the expression for g(x) using the given function f(x) = −|3x| − 4:
g(x) = 3f(x)
g(x) = 3(-|3x| - 4)
g(x) = -3|3x| - 12
This is the expression for g(x), which represents the transformed graph.
To reflect the graph of g(x) across the x-axis, we change the sign of the function. This means that the negative sign in front of the absolute value will become positive, and the positive sign in front of the constant term will become negative.
Therefore, the final rule for g(x) is g(x) = 3|3x| + 12.
Now, let's consider the graph of g(x). The graph will have the same shape as f(x), but it will be stretched vertically by a factor of 3 and reflected across the x-axis.
The original graph of f(x) = −|3x| − 4 is a V-shaped graph that opens downward and passes through the point (0, -4). The transformed graph of g(x) will have a steeper V-shape, opening downward, and passing through the point (0, 12) instead of (0, -4).
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27,813 students took the ACET this year. If only 2,836 students were admitted into the Ateneo among those students, what is the Ateneo’s acceptance rate? a. 7.5% b. 10.2% c. 13.4% d. 9.0%
If only 2,836 students were admitted into the Ateneo among 27,813 students, who took the ACET this year, the Ateneo’s acceptance rate is b. 10.2%.
How the rate is determined:The rate is the ratio of one value, expression, measurement, or quantity compared to another.
The rate represents the quotient of the numerator and the denominator.
The rate is expressed as a percentage by multiplication with 100.
The number of students who took the ACET this year = 27,813
The number of students who were admitted into the Ateneo = 2,836
The percentage or rate admitted = 10.19667% (2,836 ÷ 27,813 × 100)
= 10.2%
Thus, we can conclude that the acceptance rate or percentage is Option B.
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What is the quotient (3x^2 + 4x - 15) divide (x + 3)?
O 3x + 5
O 3x - 5
O 3x + 1
O 3x - 1, r= 1
8/5 x -3/4
i just need to know the formula of how to do these
!!!!! Due today !!!!!!!
Answers:
5)
a.Highest- 96
Lowest-52
b.74
c. 70-80
d. 13
e. 7
6)
a. 89%
b. 51%
c. In the morning(89%)
Use y = 3x2 + 18x - 2 to answer the following question(1, 19) is a point on the graph. What point is the reflection of (1, 19) across the axis of symmetry of the parabola?
Since y is a parabolla, there will be two values for y = 19. We already know that x = 1 is one value, to find the other, we can substitute y = 19 on the equation and solve for x to get the following:
\(\begin{gathered} 19=3x^2+18x-2 \\ \Rightarrow3x^2+18x-2-19=0 \\ \Rightarrow3x^2+18x-21=0 \\ \Rightarrow3(x^2+6x-7)=0 \\ \Rightarrow3(x-1)(x+7)=0 \end{gathered}\)the solutions of the equation are x = 1 and x = -7. Since we already have that (1,19) is a point on the graph, then we have that the other point is (-7,19)
consider the following code segment, which is intended to store the sum of all multiples of 10 between 10 and 100, inclusive (10 20 ... 100), in the variable total. int x
The missing code that can be used to replace / missing code / so that the code segment works as intended is x >= 10.
The code segment is intended to store the sum of all multiples of 10 between 10 and 100, inclusive. The value of x starts at 100 and is decremented by 10 on each iteration of the loop, until it reaches 10. The sum of all the multiples of 10 between 10 and 100 is stored in the variable total.
The missing code in the while statement determines when the loop will stop. If we use x >= 10 as a replacement for / missing code /, the loop will run as long as x is greater than or equal to 10. When x reaches 10, the loop will stop.
Here's the complete code:
int x = 100;
int total = 0;
while(x >= 10)
{
total = total + x;
x = x - 10;
}
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Your question is incomplete but probably the complete question is:
Consider the following code segment, which is intended to store the sum of all multiples of 10 between 10 and 100, inclusive (10 + 20 + ... + 100), in the variable total.
int x = 100;
int total = 0;
while( / missing code / )
{
total = total + x;
x = x - 10;
}
Which of the following can be used as a replacement for / missing code / so that the code segment works as intended?
A x < 100
B x <= 100
C x > 10
D x >= 10
E x != 10
King of Diamonds Industries has bonds on the market making annual payments, with 14 years to maturity, and selling for R1 482,01. At this price, the bonds yield 7%. What is the coupon rate?
The coupon rate of the bonds by King of Diamonds Industries would be 7 %.
How to find the coupon rate ?The formula for the bond price shows the coupon payment and so can be used to find the coupon rate:
= (Coupon payment x ( 1 - ( 1 + r ) ^ ( - number of years till maturity ) ) ) / r + Face value / (1 + rate )^ number of years
1,482.01 = (C x (1 - (1 + 0.07 )^ (- 14) ) ) / 0.07 + F / (1 + 0.07 ) ^ 14
103.7407 - 0.07 x (F / (1 + 0.07) ^14 ) = C x (1 - ( 1 + 0.07) ^ ( - 14) )
Using a calculator, C is $ 70.
This means that the coupon rate is:
= 70 / 1, 000
= 7 %
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The driving distance from Los Angeles to a Chicago is 2,054 mi. The distance from Chicago to Boston is 983 mi. About how many miles is the drive from Los Angeles to Boston though Chicago?
Step-by-step explanation:
given :
The driving distance from Los Angeles to a Chicago is 2,054 mi. The distance from Chicago to Boston is 983 mi.
so, the numbers of mile driving from Los Angeles to Boston though Chicago =
2,054 + 983 = 3.037 mi
PLEASEEEEEEE HELP DUE NOWWWWWWWWW
help me please i would appreciate it so so much
Answer:
w = 120
x = 60
y = 120
z = 60
Step-by-step explanation:
w = 120 (vertically opposite angles)
sum of co interior angles is 180
⇒ w + x = 180 and x + y = 180
w + x = 180
⇒ 120 + x = 180
⇒ x = 180 - 120
⇒ x = 60
x + y = 180
⇒ 60 + y = 180
⇒ y = 180 - 60
⇒ y = 120
z = x (corresponding angles)
z = 60
Find the Interpret the mean absolute deviation of the data 1/4,5/8,3/8,3/4,1/2
The mean absolute deviation (MAD) for the given data is 1/20. This means that, on average, each data point in the set differs from the mean by 1/20.
To find the mean absolute deviation (MAD) of a set of data, we need to calculate the average difference between each data point and the mean of the data set. Here's how we can calculate it for the given data:
Step 1: Find the mean (average) of the data set.
Mean = (1/4 + 5/8 + 3/8 + 3/4 + 1/2) / 5 = 2/5
Step 2: Calculate the difference between each data point and the mean.
Differences: |1/4 - 2/5|, |5/8 - 2/5|, |3/8 - 2/5|, |3/4 - 2/5|, |1/2 - 2/5|
Step 3: Calculate the absolute value of each difference.
Absolute Differences: 1/20, 1/40, 1/40, 1/20, 1/10
Step 4: Find the average of the absolute differences.
MAD = (1/20 + 1/40 + 1/40 + 1/20 + 1/10) / 5 = 1/20
The MAD provides a measure of the average amount of variation or dispersion in the data set. In this case, a MAD of 1/20 indicates that the data points are relatively close to the mean, with most values falling within 1/20 of the mean value.
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what is the solution to the equation:
5(n - 1/10) = 1/2
a. n= 13/5
b. n= 3/25
c. n= 0
d. n= 1/5
\( \sf \longrightarrow \: 5 \bigg( \: n - \frac{1}{10} \bigg) = \frac{1}{2} \\ \)
\( \sf \longrightarrow \: 5 \bigg( \: \frac{n}{1} - \frac{1}{10} \bigg) = \frac{1}{2} \\ \)
\( \sf \longrightarrow \: 5 \bigg( \: \frac{10 \times n - 1 \times 1}{1 \times 10} \bigg) = \frac{1}{2} \\ \)
\( \sf \longrightarrow \: 5 \bigg( \: \frac{10n - 1}{ 10} \bigg) = \frac{1}{2} \\ \)
\( \sf \longrightarrow \: \: \frac{50n - 5}{ 10} = \frac{1}{2} \\ \)
\( \sf \longrightarrow \: \: 2(50n - 5) =1(10) \\ \)
\( \sf \longrightarrow \: \: 2(50n - 5) =10 \\ \)
\( \sf \longrightarrow \: \: 100n - 10=10 \\ \)
\( \sf \longrightarrow \: \: 100n =10 + 10\\ \)
\( \sf \longrightarrow \: \: 100n =20\\ \)
\( \sf \longrightarrow \: \:n = \frac{2 \cancel{0}}{10 \cancel{0}} \\ \)
\( \sf \longrightarrow \: \:n = \frac{1}{5} \\ \)
Answer:-
Answer:- D) n = ⅕ ✅To solve the equation \(\sf 5(n - \frac{1}{10}) = \frac{1}{2} \\\) for \(\sf n \\\), we can follow these steps:
Step 1: Distribute the 5 on the left side:
\(\sf 5n - \frac{1}{2} = \frac{1}{2} \\\)
Step 2: Add \(\sf \frac{1}{2} \\\) to both sides of the equation:
\(\sf 5n = \frac{1}{2} + \frac{1}{2} \\\)
\(\sf 5n = 1 \\\)
Step 3: Divide both sides of the equation by 5 to isolate \(\sf n \\\):
\(\sf \frac{5n}{5} = \frac{1}{5} \\\)
\(\sf n = \frac{1}{5} \\\)
Therefore, the solution to the equation \(\sf 5(n - \frac{1}{10})\ = \frac{1}{2} \\\) is \(\sf n = \frac{1}{5} \\\), which corresponds to option (d).
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What is the following product? root(3, 4) * sqrt(3)
Answer:
It’s option C
Step-by-step explanation: just took the quiz on edge
Answer:
C
Step-by-step explanation:
What is 2 8/10 + (3.5) in decimal form?
Answer:
Step-by-step explanation:
If its 2.8/10+3.5 = 2.78
if its 28/10+(3.5)=6.3
If its 2/8 / 10 + 3.5 = 3.525
how?
2/8 (1/4 simplified) divided by 10 = 0.025 (0.25/10)
0.025+3.5=3.525
Monica has a triangular piece of fabric. The height of the triangle is 27 inches and the triangle's base is 18 inches. Monica says that the area of the fabric is 486 in2. What error did Monica make? Explain your answer by entering the correct area of the fabric.
Monica forgot to multiply by___
The area of the fabric is ____ in.2
Evaluate: 56 + 80.6
Answer:
136.6
Step-by-step explanation:
56 + 80.6
ok im going to break it down you don't have to do this
50 + 6 = 56
80 + 0.6 = 80.6
now im going to add
50 + 80 = 130
6 + 0.6 = 6.6
now im going to add it all together
130 + 6.6 = 136.6