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Zielflug [23.3K]
3 years ago
13

Write and solve a proportion to answer the question.

Mathematics
1 answer:
svet-max [94.6K]3 years ago
6 0
A/78 = 25/100 . . . . the equation
a = 78*25/100 = 19.5

19.5 is 25% of 78
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Help<br> Please due now!!!!
Sergeeva-Olga [200]

Answer:

3920

Step-by-step explanation:

(9+11)(14•14)

(20)(196)

20 x 196

3920

7 0
3 years ago
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(25 points) A construction crew is lengthening a road. Let y represent the total length of the road (in miles). Let x represent
Tresset [83]

Answer:

L=193

Step-by-step explanation:

Initial length of the road =57mi

L= Total length

D=number of days worked

Number of miles added in 1 day= 4mi

Therefore,

L=57+D*4

After 34 days,

L=57+(34*4)

L=193mi

8 0
3 years ago
For the following right triangle, find the length x
Andrews [41]

Answer:

5\sqrt{2}

Step-by-step explanation:

https://www.symbolab.com/solver/radical-equation-calculator/sin45%3D%5Cfrac%7B5%7D%7Bx%7D

7 0
3 years ago
The mean of three numbers is 4 <br> Two of the numbers are 1, 9 <br> What is the missing number?
aliya0001 [1]

Answer:2

Step-by-step explanation: 9+1+2=12

12\3=4

ANSWER : 2

7 0
3 years ago
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Please help. I need a step by step explanation. Extra points will be given as well as brainiest!!!
Shalnov [3]

Answer:

V =113.04

Step-by-step explanation:

A sphere has a surface area of 113.04

SA = 4 pi r^2

113.04 = 4 pi r^2

Let pi 3.14

113.04 = 4 *(3.14) r^2

113.04 = 12.56 r^2

Divide each side by 12.56

113.04/12.56 = r^2

9 = r^2

Take the square root of each side

3 =r

We want to find the volume

V = 4/3 pi r^3

V = 4/3 (3.14) 3^3

V =113.04

3 0
4 years ago
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