2 years ago

This equation shows how the revenue at Jill's Auto Wash depends on the number of

Mathematics

1 answer:

Romashka [77]2 years ago

6 0

Answer:y = 9x

Step-by-step explanation:

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Please help meeeeeeeeeeeeeeeeeeeeeeeeeeeeee

djverab [1.8K]

Answer:

1/9

Step-by-step explanation:

3^-2

Remember that the negative exponent moves it to the denominator

---------

3^2

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4 0

3 years ago

The time t required to drive certain distance varies inversely with the speed r. It takes 2 hours to drive the distance at 40 mi

Roman55 [17]

Answer:

$\frac{16}{9}$ hours

Step-by-step explanation:

Whenever 2 quantities (suppose a and b) are inversely proportional to each other, we can write an proportionality equation (with k as proportional constant) as:

$a=\frac{k}{b}$

Since, here t is INVERSELY PROPORTIONAL to r, we can say:

$t=\frac{k}{r}$

Firstly, we have t = 2 hour and r = 40 mph, so we find k:

$t=\frac{k}{r}\\2=\frac{k}{40}\\k=2*40\\k=80$

Now, secondly, we have r = 45 and k = 80, we need to find t:

$t=\frac{80}{45}\\t=\frac{16}{9}$

So, it would take $\frac{16}{9}$ hours

4 0

3 years ago

2 r squared + 3s cubed minus r squared + 40 squared minus r squared if R equals -2 s equals -3 and T equals 5

Flura [38]

$2r^2+3s^2-r^2+4t^2-r^2\\\\\text{simplify}\\\\(2r^2-r^2-r^2)+3s^2+4t^2=3s^2+4t^2\\\\s=-3;\ t=5\\\\3(-3)^2+4(5)^2=3(9)+4(25)=27+100=127$

6 0

3 years ago

(NEED HELP WITH NUMBER 1!!!)

alexandr1967 [171]

Answer:

35 ia the answer sorry if im wrong

7 0

3 years ago

Write a number sentence that tells what the model represents

atroni [7]

Well it depends on what the model is but if it's an IRA or whatever so if you make your own model that's easy

8 0

3 years ago