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andrezito [222]
3 years ago
15

Jake washes cars. On monday he washed 18 cars for $90. On tuesday he washed 9 cars for $45. On wednesday he washed 12 cars for $

60. What is the rate of change of Jakes earnings?
Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
6 0

See attachment for reply.

chubhunter [2.5K]3 years ago
3 0

Answer:

the rate  of change is 5

Step-by-step explanation:

$90 / 18 cars = $5 per car

$45 / 9 cars = $5 per car

$60 / 12 cars = $5 per car

That means the rate of change is 5 (5/1)

You might be interested in
How to solve |3+x| -5 = -3
Irina-Kira [14]
To solve for x, you first add 5 to both sides so it remains equal.

3 + x = 2

Then you simply subtract 3 on both sides.

x = -1

Substitute your solution into the equation and see it is true.

|3+(-1)) - 5 = -3

The equation is true, therefore your answer is: x = -1
5 0
2 years ago
5)
masya89 [10]

Answer:

9.95

Step-by-step explanation:

you add 4 miles + 5.2 miles which is 9.2 miles then u add the 3/4 mile which is .75 in a decimal form which equals 9.95

7 0
2 years ago
Print Version
san4es73 [151]

Answer:

$9450

Step-by-step explanation:

We will use compound interest formula:

F=P(1+r)^t

Where

F is future amount [what we want to figure out]

P is present amount [9000]

r is rate of interest [since we want for 6 months, the annual interest divided by 2 is r. So r = 10/2 = 5% or 0.05]

t is the time [ the time period is for 6 months so t = 1 since we already converted the interest rate to 6 month chunk]

Putting in formula, we get:

F=P(1+r)^t\\F=9000(1+0.05)^1\\F=9000(1.05)\\F=9450

6 0
3 years ago
Solve for a . <br><br> 5 a - 2 = 23 <br><br> a = ?
Margaret [11]
A= 20 cause 5-2=3 and if the top is 23 it has to be 20
3 0
3 years ago
What is the measure of ∠R ?
Zinaida [17]
Using the Law of Sines  (sina/A=sinb/B=sinc/C for any triangle)

sinR/30=sin96/54

sinR=30sin96/54

R=arcsin(30sin96/54)°

R≈33.5°  (to nearest tenth of a degree)
4 0
3 years ago
Read 2 more answers
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