The triangle ΔADB is congruent to the triangle ΔCDB by the ASA postulate.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180°.
The ratio of the matching sides will remain constant if two triangles are comparable to one another.
The triangles are said to be congruent if two points and the contained side among one triangle match two angles and the contained side of another triangle.
In triangles ΔADB and ΔCDB, then we have
∠BAD = ∠BCD (Given)
∠BDA = ∠BDC (Given)
AD = AD (Common side)
The triangle ΔADB is congruent to the triangle ΔCDB by the ASA postulate.
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Help pls George is building a fence around a rectangular dog run. He is using his house as one side of the run. The area of the dog run will be 240 square feet. The length of the run is 30 feet, and the width is (30 minus x) feet. The diagram below shows his plan.
Recall the formulas for area and perimeter: A = lw and P = 2l + 2w.
The width of the dog run is 20 feet.
In the given problem, the length of the dog run is given as 30 feet.
The area of the dog run is also given as 240 square feet.
Using the formula for the area of a rectangle (A = lw), we can solve for the width (w).
Rearranging the formula, we have w = A / l.
Plugging in the values, we get w = 240 / 30 = 8 feet.
Since the width is given as (30 minus x) feet, we can set up an equation:
30 - x = 8. Solving for x, we find x = 22.
Therefore, the width of the dog run is 20 feet (30 - 22 = 8).
In this problem, the length and width of the dog run are defined by the dimensions of the fence being built around it.
The area of the dog run is given as 240 square feet.
By using the formula for the area of a rectangle, we can solve for the width. We are also given that the length is 30 feet.
Setting up an equation with the given width (30 minus x) and solving for x, we find that x is equal to 22.
This means that the width of the dog run is 8 feet. The main answer to the problem is that the width of the dog run is 20 feet (30 - 22 = 8).
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For this problem, you will need to use the Desmos Riemann Sum Calculator. (This link opens a new tab/window.) Initially, the calculator shows a left Riemann sum with n= 5 subintervals for the function f(x) = 2x +1 on the interval [1,4]. Update the applet to consider the function f(x) = x2 +1 on the same interval. Compute the following Riemann sums. Ls , Ms L25 M25 • R2 L100= M100 R100 Observe any patterns you see in the calculations above, and make an educated guess of the exact area bounded by f(x) = *? + 1 and the x-axis on the interval (1,4). Exact Area =
Answer:
Step-by-step explanation:
search it up
In your gym class, your teacher can create teams of 4 for a
relay race and have no students left over. The next day, your
teacher creates teams of 5 for dodge ball and has no
students left over. What are some possible numbers of
students in your class?
Answer: 20, 40, 60, 80, 100,....
Step-by-step explanation:
Given that :
It is possible to create teams of 4 for a relay race with no student leftover
Also,
It is possible to create teams of 5 for dodgeball with no student left over from the same class
To deduce the possible number of students in the class, then the number of students should be a multiple of both 4 and 5
Multiples of 4 include = 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100,....
Multiples of 5 : 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100,....
Multiples common to both 4 and 5 : 20, 40, 60, 80, 100,....
what is the product 7.9 and 1.4
Answer:
11.06
Step-by-step explanation:
Find the value of y.
The value of y is 4√3
What are similar triangles?Similar triangles have the same corresponding angle measures and proportional side lengths. The corresponding angles of similar triangles are congruent or equal.
Also , the ratio of corresponding sides of similar triangles are equal.
There are two triangles that are similar
Therefore;
y /16 = 4/y
y² = 48
y = √48
y = √16 × √ 3
y = 4√3
Therefore, the value of y is 4√3
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Which equation represents a line which is parallel to the line y = -2x - 7?
y = -2x is line parallel to given line.
What is line?
A line has length but no width, making it a one-dimensional figure. A line is made up of a collection of points that are endlessly stretched in the opposing directions.
Main body:
The slope-intercept form is
y=mx+b, where
m is the slope and b is the y-intercept.
y=mx+b
Using the slope-intercept form, the slope is −2.
m=−2
To find an equation that is parallel, the slopes must be equal. Find the parallel line using the point-slope formula.
Use the slope −2 and a given point (0,0) to substitute for
x₁ and y₁ in the point-slope form
y−y₁=m(x−x₁)
, which is derived from the slope equation
m=(y₂−y₁)/(x₂−x₁).
y−(0)=−2*(x−(0))
Simplify the equation and keep it in point-slope form.
y+0=−2⋅(x+0)
Solve for y.
y=−2x
Hence y = -2x is line parallel to given line.
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Find x, y for figures 1, 2, and 3 shown on the pictures below
Answer:
1. x=1.25; y=1.75
2. x=15; y=4
3. x=3; y=2
Step-by-step explanation:
Because of the parallel lines, you're working with similar triangles. Therefore, the side lengths of the smaller triangle (in each figure) are proportional to those of the larger. Set up a proportion for x and solve; then for y.
Ex: \(\frac{10}{8}=\frac{x+5}{5}\) ⇒ 50=8(x+5)=8x+40 ⇒ 10=8x ⇒ x=1.25
\(\frac{10}{8}=\frac{7+y}{7}\) ⇒ 35=28+4y ⇒ 7=4y ⇒ y=1.75
NOTE: Be sure to set up the correct corresponding sides!
Use Basic Probability Rules to Compute Probabilities s. A recent study found that 61% of college students purchase their textbooks online. a. If three college students are randomly selected, what is the probability that ALL three buy their textbooks online? Round to the nearest ten thousandth. b. If five college students are randomly selected, what is the probability that at least one purchases their textbooks online?
When three college students are randomly selected, the probability that ALL three buy their textbooks online is 0.227
The probability that at least one purchases their textbooks online is 1.
As per the question the probability of students purchase their textbooks online 61%.
\(=\frac{61}{100}\)
p = 0.61.
So, failure = 1 - 0.61 = 0.39
q = 0.39
When 3 students are selected(n = 3)
We know that, \($$p(x)={ }^n c_x p^x q^{n-x}$$\)
So, probability that all of them to purchase
\($$\begin{aligned}&(x=3) \\& p(3)={ }^3 c_3(0.61)^3(0.39)^{3-3} \\& p(3)=0.22698\end{aligned}$$\)
When 5 students are selected (n = 5)
And probability that at least one purchases books online
\(=P(x=1)+P(x=2)+P(x=3)$ $+P(x=4)+P(x=5)$\)
Now we know that probability of all equal to 1.
\(P(0)+P(1)+P(2)+P(3)+P(4)+P(5)=1\)
So, we can simply write
\($$\begin{aligned}P & =1-p(x=0)+p(x=1) \\& =1-\left[{ }^5 C_0(0.61)(0.35)^{50}+{ }^5 C_1(0.61)^1(0.39)^{5-1}\right] \\& =1-0.00902-0.07056 \\P& =0.92042\end{aligned}$$\)
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Can someone help me please?
Answer:
8 weeks
Step-by-step explanation:
Betsy:
x=471-13y
Carlos:
x=15+44y
471-13y=15+44y
456=57y
y=8
Tom has a water tank that holds 5 gallons of water. tell me this is water for my footing to fill six bottles they each holds 16 ounces and a picture that holds one over 2 gallon how many ounces of water left in a water tank?
288 ounces of water are left in the water tank.
What is arithmetic?
Arithmetic is an elementary part of mathematics that consists of the study of the properties of the traditional operations on numbers—addition, subtraction, multiplication, division, exponentiation, and extraction of roots
Here, we have
Given: Tom has a water tank that holds 5 gallons of water. tell me this is water for my footing to fill six bottles they each hold 16 ounces and a picture that holds one over 2 gallons.
1 gallon = 128 ounces, 2 gallon = 256 ounces
6 bottles × 16 ounces = 96 ounces
2 gallon + 96 ounces = 256 + 96 ounces = 352 ounces
5 gallon = 5 × 128 = 640 ounces
= 640 - 352 = 288 ounces
Hence, 288 ounces of water are left in the water tank.
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Find the area of the triangle below. Be sure to include the correct unit in your answer.
Answer:
Step-by-step explanation:
how long is each side of the box
Based on the information in the image, it can be inferred that the sides of the box measure 5 cm each.
How to find the measure of the sides of the box?To find the measure of the sides of the box we must carry out the following mathematical procedure:
As we know the volume of a cube is the equivalent to the length of its sides raised to the cube (raised to the 3). In this case, to identify the value of the sides we must find the cube root of the volume and the result is the length of the sides.
So this cube has a volume of 125cm³, so its sides would be the cube root of 125.
\(\sqrt[3]{125} = 5\)
According to the above, the length of the sides is 5 taking into account that all the sides are equal.
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Consider the function F and G as show in the graph. Find the domain of F ,G and the domain of F+G
As we can see on the given graph, the domain of function F goes from x=3 to x=12. Then, the domain of F is
\(\lbrack3,12\rbrack\)On the other hand, the domain of G goes from x=2 to x=11. Then, the domain of G is
\(\lbrack2,11\rbrack\)Then, from the above results, we can see that the domain of F+G is the intersection of the domain of F and G, that is
\(\lbrack3,11\rbrack\)Find the quotient of z₁ by z2. Express your answer in
trigonometric
form.
² - 3 (0 (4) + (*))
Z₁ cos
+/sin
Z₂
²2 = 7 (cos(377)+
COS
8
O A. 7 (cos (577) + i sin (5/77))
8
B.
21(cos(577)+isin (577))
8
OC. 21 cos
21(cos(-7)+ i sin(-77))
O D. 7 (cos(-7) + + sin(-7))
i
+/sin
37T
8
The quotient of z₁ by z₂ in trigonometric form is:
7/21 * (cos(584°) + i sin(584°))
To find the quotient of z₁ by z₂ in trigonometric form, we'll express both complex numbers in trigonometric form and then divide them.
Let's represent z₁ in trigonometric form as z₁ = r₁(cosθ₁ + isinθ₁), where r₁ is the magnitude of z₁ and θ₁ is the argument of z₁.
We have:
z₁ = 7(cos(577°) + i sin(577°))
Now, let's represent z₂ in trigonometric form as z₂ = r₂(cosθ₂ + isinθ₂), where r₂ is the magnitude of z₂ and θ₂ is the argument of z₂.
From the given information, we have:
z₂ = 21(cos(-7°) + i sin(-77°))
To find the quotient, we divide z₁ by z₂:
z₁ / z₂ = (r₁/r₂) * [cos(θ₁ - θ₂) + i sin(θ₁ - θ₂)]
Substituting the given values, we have:
z₁ / z₂ = (7/21) * [cos(577° - (-7°)) + i sin(577° - (-7°))]
= (7/21) * [cos(584°) + i sin(584°)]
The quotient of z₁ by z₂ in trigonometric form is:
7/21 * (cos(584°) + i sin(584°))
Option C, 21(cos(-7°) + i sin(-77°)), is not the correct answer as it does not represent the quotient of z₁ by z₂.
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ryann has 80$ to spend on gifts. She already decided to use $25 for a scarf for her grandmother. She wants to spend the reaming money to purchase gifts for her four freinds. She will spend the same amount of money for each friend's gift. What is the most she can spend on each friend?
Answer:
Okay so since she has 80 dollars, and already spent 25, then she would have 55 dollars remaining.
Now that she has 55 dollars, she will divide it up evenly between her 4 friends.
55/4 = 13.75
The most that she would be able to give them is $13.75
Step-by-step explanation:
Hope it helps! =D
to find the quotient 3/4 divided by 1/8 1. multiply 4/3 by 1/8
Explanation
remember
\(\begin{gathered} \frac{a}{b}\text{divided by }\frac{c}{d}=\frac{ad}{bc} \\ \frac{a}{b}\text{Multiplied by }\frac{c}{d}=\frac{ac}{bd} \end{gathered}\)Rearrange the equation so uuu is the independent variable.
-12u+13=8w-3
Step-by-step explanation:
\( - 12u + 13 = 8w - 3 \\ - 12u + 13 + 3 = 8w \\ - 12u + 16 = 8w \\ w = \frac{ - 12u + 16}{8} \\ w = \frac{ - 3}{2} u + 2\)
I hope that is useful for you :)
i need these answers quickly, all questions
Answer:
1.) R = 9 in
2.) R = 14.5 m
3.) D = 42 ft
4.) 26 mm
5.) 131.88 m
6.) 34.54 in
7.) 25.12 yd
8.) 28.26 mm
9.) 43.96 in
10.) 197.82 cm
11.) 263.76 cm
12.) 94.2 cm
13.) 97.34 m
14.) 138.16 cm
15.) 47.1 yd
16.) 285.74 cm
Step-by-step explanation:
2(pi)r... literally plugged in
Divide,
(9x^2+ 30x+25) divided by (3x+5)
Your answer should give the quotient and the remainder.
Answer:
(3 x - 5)^{2}
Step-by-step explanation:
Rewrite the expression into the form of a^2\pm 2ab+b^2:(3 x)^{2} - 2 \times 3 x \times 5 + 5^{2}
Factor the expression using a^{2}\pm 2ab+b^{2}=(a\pm b)^{2}:(3 x - 5)^{2}
Answer: (3 x - 5)^{2}
For the population of 870, how many people should be surveyed to include 10% of the population
Answer:
10% of 870 is 87
Step-by-step explanation:
I am so sorry if that wasn't the right answer!
have a blessed day!
Someone help me with these problems
The roots of the equation are : x = 0 an x= 13/5
What are equations?A mathematical statement that has a "equal to" symbol between two expressions with equal-values is called an equation.
as in 3x + 5 Equals 15, for instance.
There are many different types of equations, including linear, quadratic, cubic, and others.
In the question, we have:
5x² = 13x
⇒ 5x² - 13x = 0
⇒ x(5x-13) = 0
So, solutions of the equation are: x =0 and x =13/5
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The rοοts οf the equatiοn are : x = 0 an x = 13/5
What are equatiοns?A mathematical statement that has a "equal tο" symbοl between twο expressiοns with equal-values is called an equatiοn.
There are numerοus ways in which οne may define an equatiοn. In its simplest fοrm in algebra, the definitiοn οf an equatiοn is a mathematical statement that shοws that twο mathematical expressiοns are equal. Fοr instance, 3x + 5 = 14 is an equatiοn, in which 3x + 5 and 14 are twο expressiοns separated by an ‘equal’ sign. The mοst basic and simple algebraic equatiοns cοnsist οf οne οr mοre variables in math.
as in 3x + 5 Equals 15, fοr instance.
There are many different types οf equatiοns, including linear, quadratic, cubic, and οthers.
In the questiοn, we have:
5x² = 13x
⇒ 5x² - 13x = 0
⇒ x(5x-13) = 0
Sο, sοlutiοns οf the equatiοn are: x =0 and x =13/5
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Please Help The question is down below.
Answer:
C. 5
Step-by-step explanation:
Becuase the left figure is just a scaled down size of the right one, 3 x 2 = 6 so 10 ÷ 2 = 5
WooHoo! Pls Brainliest! It would mean a lot! ;)
if you take away 25 from a number you will be left with two and halftimes 30. what is the number?
Annette has 3 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the race and walking back the same distance to cool down. If she runs at a speed of 9mph and walks back at a speed of 3mph , how long should she plan to spend walking back?
Answer:
Annette should plan to spend 2.25 hours walking back.
Step-by-step explanation:
To solve this problem, we can use the formula:
Time = Distance / Speed
Let's assume the distance of the race is D miles.
Annette spends her time running the distance of the race, which takes:
Time running = D / 9 hours
She then walks back the same distance, which we need to find the time for:
Time walking = D / 3 hours
Since Annette has a total of 3 hours for her training, the sum of the running time and walking time should equal 3 hours:
D / 9 + D / 3 = 3
To simplify the equation, we can multiply all terms by 9 to eliminate the denominators:
D + 3D = 27
Combining like terms:
4D = 27
Dividing both sides of the equation by 4:
D = 6.75
So, the distance of the race is 6.75 miles.
To find the time Annette should spend walking back, we substitute the distance into the time-walking formula:
Time walking = D / 3 = 6.75 / 3 = 2.25 hours
Therefore, Annette should plan to spend 2.25 hours walking back.
Start time:___
Elapsed Time: 2hr 37min
End Time: 1:15pm
Can someone pls help
Answer:
11:37am
Step-by-step explanation:
Answer:
11:22am
Step-by-step explanation:
Match each drawing on the left with its geometric notation on the right. Some of the answer choices on the right may not be used.
Answer:
Please attach a photo to this so I can better answer your question
Desperate Need Of Help
The domain and range of the graph above in interval notation include the following:
Domain = [-6, 3]
Range = [-3, 3]
What is a domain?In Mathematics and Geometry, a domain refers to the set of all real numbers (x-values) for which a particular function (equation) is defined.
In Mathematics and Geometry, the horizontal portion of any graph is used to represent all domain values and they are both read and written from smaller to larger numerical values, which simply means from the left of any graph to the right.
By critically observing the graph shown in the image attached above, we can reasonably and logically deduce the following domain and range:
Domain = [-6, 3] or -6 ≤ x < 3.
Range = [-3, 3] or -3 < y < 3
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A certain drug is made from only two ingredients: compound A and compound B. There are 3 milliliters of compound A used for every 5 milliliters of compound
B. If a chemist wants to make 728 milliliters of the drug, how many milliliters of compound A are needed?
? milliliters of compound A
In order to create 728 millilitres of the medication, 273 millilitres of component A are required.
What do you mean by compound?A compound in chemistry is a material comprised of two or more separate chemical elements mixed together in a certain proportion. Chemical connections that are challenging to break are created when the elements interact with one another.
Compound A:Compound B ratio in the medication is 3:5. In other words, there are 3 millilitres of compound A and 5 millilitres of compound B for every 3+5=8 millilitres of the medicine.
We may set up a percentage using the ratio of compound A to the total volume of the medicine to determine how much compound A is required to make 728 millilitres of the drug:
3 ml x 3 ml x 3 ml
-------- = ----------
728 ml total, 8 ml overall
If we cross-multiply, we obtain:
8(x) = 3(728)
To find x, we use the formula x = 3(728)/8 = 273
In order to create 728 millilitres of the medication, 273 millilitres of component A are required.
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273 milliliters of compound A are needed to make 728 milliliters of the drug.
What are proportions?
In mathematics, a proportion is a statement that two ratios are equal. It expresses the relationship between two or more quantities that are directly proportional to each other. A proportion can be represented as an equation of the form:
a/b = c/d
To determine the amount of compound A needed to make 728 milliliters of the drug, we need to use the given ratio of 3 milliliters of compound A to 5 milliliters of compound B.
Let's start by finding the ratio of compound A to the total amount of ingredients (A+B) in the drug:
3 : (3+5) or 3:8
This means that for every 8 milliliters of the drug, 3 milliliters of compound A are used.
To find out how many milliliters of compound A are needed for 728 milliliters of the drug, we can set up a proportion:
3/8 = x/728
where x represents the amount of compound A needed.
To solve for x, we can cross-multiply:
8x = 3*728
8x = 2184
x = 273
Therefore, 273 milliliters of compound A are needed to make 728 milliliters of the drug.
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Matt started his own company where he rents used textbooks to struggling college students at multiple Universities for a low rate. Over the last few years Matt has been able to collect a total of 250 textbooks for his business at Temple University. Unfortunately, students can be irresponsible and lose their textbook rental causing a loss for Matt. Based on past information Matt has collected the data below for Temple University based on losses per semester. #
of losses per semester Probability
0 0.08
5 0.16
10 0.28
15 0.32
20 0.14
25 0.02
a. Calculate the expected frequency of losses per semester. (2 points)
b. Calculated the variance. (2 points)
Now assume that when losses do occur, they are non-random and losses equal $60.
c. Calculate the expected losses per semester? (2 points)
d. Calculate the expected losses for ALL textbooks per semester. (1 point)
e. Calculate the expected losses for ALL textbooks for the next 2 school years (4 semesters). (1 point)
Answer:
a. Expected frequency of losses per semester = 0*0.08 + 5*0.16 + 10*0.28 + 15*0.32 + 20*0.14 + 25*0.02
Expected frequency of losses per semester = 11.7 losses per semester
b. Variance = (0-11.7)²*0.08 + (5-11.7)²*016 + (10-11.7)²*0.28 + (15-11.7)²*0.32 + (20-11.7)²*0.14 + (15-11.7)²*0.02
Variance = 10.9512 + 7.1824 + 0.8092 + 3.7848 + 9.6446 + 3.5378
Variance = 35.61
c. As losses equal $60, expected losses per semester = 11.7*$60 = $702
d. Expected losses of all textbooks per semester = 250*11.7*$60 = $175,500
b. What is the difference in height between an albatross flying at 258m above the surface of the ocean and a shark swimming 144m below the surface?
Answer:
402 Meters
Step-by-step explanation:
Add 258+144 and you get 402.