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NemiM [27]
2 years ago
10

A man is now twice as old as his son. Fifteen years ago he was three times as old as his son was then. How old is the son now?​

Mathematics
1 answer:
marysya [2.9K]2 years ago
7 0

Answer:

20 is the answer to that question

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Evaluate the expression y=4. 5+y+8<br><br> A)72<br> B)21<br> C)17<br> D)13
Elden [556K]

Answer:

C)17

Step-by-step explanation:

5+y+8

let  y=4

5+4+8

9+8

17

3 0
3 years ago
Read 2 more answers
Determine the constant of proportionality,k,of Kevin’s wage.
ankoles [38]

Answer:

Kevin's constant of proportionality,k = $8.25 per hour

Greg's constant of proportionality,k = $9 per hour

Savannah's constant of proportionality,k = $9.5 per hour

Step-by-step explanation:

1. What is the constant of proportionality, k, of Kevin's wage? Greg's? Savannah's?

Solution

y = kx is a proportional variation

Where,

y and x are represent two different variables

k represent constant of proportionality

From the attached table,

Let

y = wages earned (in dollars)

x = hours worked

To find the constant of proportionality k of Kevin's wage, divide the variable y (total earned) by the variable x (number of hours)

Using any points on the table

Take (8,66.00) for example

constant of proportionality k of Kevin's wage = variable y (total earned) / variable x (number of hours)

= 66.00/8

= 8.25

k = $8.25 per hour

B. Constant of proportionality of Greg's wage = variable y (total earned) / variable x (number of hours)

Using (9, 81.00)

k = 81.00/9

= 9

Greg's k = $9 per hour

C. Constant if proportionality of Savannah's wage = variable y (total earned) / variable x (number of hours)

Using (6, 57.00)

k = 57.00/6

= 9.5

Savannah's k = $9.5 per hour

Therefore,

Kevin's constant of proportionality,k = $8.25 per hour

Greg's constant of proportionality,k = $9 per hour

Savannah's constant of proportionality,k = $9.5 per hour

7 0
3 years ago
Felix has a bucket of golf balls.
oksian1 [2.3K]
The answer is c


4•2=8
4 0
3 years ago
Can someone help me with this question please? Only give me the right answer please.
IRINA_888 [86]
A ray has one point and goes in one direction forever.

8 0
3 years ago
What is the solution of x^2-1/x^2+5x+4
dem82 [27]
Hey,
Depends on what you want us to do with the equation.
If you want us to simplify the expression, here you go: \frac{x  -  1}{x  +  4}.

Let me know if this isn't what you need, and I'll try to help the best I can.

Cheers,
Izzy

3 0
3 years ago
Read 2 more answers
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