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sineoko [7]
3 years ago
15

A right triangle abc is similar to triangle pqr such that the hypotenuse bc=10 and the hypotenuse qr=4. if ac=8, what is the len

gth of pr? round your answer to the nearest tenth.
Mathematics
1 answer:
adoni [48]3 years ago
7 0
Because the triangles are similar

ac/pr=bc/qr
8/pr=10/4

10*pr=8*4
10pr=32
pr=32/10
pr=3,2
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Two sides of a parallelogram are 500 feet and 790 feet. The measure of the angle
Nat2105 [25]

Answer:

  • 215117 ft²

Step-by-step explanation:

Assumed the base is the longer side.

<u>The height of the parallelogram is:</u>

  • h/500 = sin 33°
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  • h =  272.3 ft

<u>The area is:</u>

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3 0
3 years ago
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if the area of a square is 144 feet and the perimeter of the triangle is 28 feet, what is the perimeter of the room's floor?
FinnZ [79.3K]

Answer:

52+12\pi

Step-by-step explanation:

The diagram for the question is attached below

perimeter of the triangle is 28 feet

area of a square is 144 feet

Area of the square is side^2

side ^2= 144

take square root on both sides

side = 12

side of the square = 12

side is the diameter of the semicircle

Diameter = 12 , so radius = 12 divide 2 = 6

circumference of semicircle = 2\pi r=2\pi (6)=12\pi

one side of the rectangle is calculated in the perimeter of triangle and other side is calculated using circumference

perimeter of other two side = 2(12)= 24

Total perimeter = 28+24+12\pi =52+12\pi

4 0
3 years ago
If a person starts investing $100 per month starting at age 21, and that money earns a 5% return every year, how much will this
aalyn [17]

The formula for calculating compound interest with yearly contributions is:

Balance = X*(1 + Y)^n + Z((1 + Y)^(n + 1) - (1 + Y)/Y)

where the balance is the money earned after n years invested

Y is the interest rate as a fraction

Z is the yearly contribution

X is the starting investment

Therefore the calculation for this example is:

Balance = 1200*(1 + 0.05)^48 + 1200((1.05)^49 - (1.05)/05)

= $249,393.5


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3 years ago
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What is the square root of 12383?
Stels [109]
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3 years ago
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A college professor reports that students who finish exams early tend to get better grades than students who hold on to exams un
s344n2d4d5 [400]

Answer:

The correlation between exam score and amount of time spent on the exam is an example of a <u>negative correlation</u>.​

Step-by-step explanation:

Consider the provided statement.

College professor reports that students who finish exams early tend to get better grades than students who hold on to exams until the last possible moment.

That means the student who finish the exam early will get the highest marks. One who finish after the first student will get second highest mark and the one who finish in the end will get the least marks.

Now consider time as first variable and marks as second variable.

That means as the first variable increase the second variable decreases.

According to the definition of Negative correlation: It is a relationship between two variables in which one variable increases as the other decreases, and vice versa.

Hence, the correct answer is negative correlation.

7 0
3 years ago
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