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3 years ago

7

R(a) is the change in the population of rats based on the whole number of acres(a) of pasture. What is an appropriate domain for

this function?

2 answers:

slavikrds [6]3 years ago

5 0

Answer:

If you are on USATestprep it's C, All positive integers.

If you don't mind, can you mark me brainliest?

pochemuha3 years ago

4 0

Answer:

Its all positive integers

Step-by-step explanation:

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7. Diane flew home from vacation with a heavy bag. With the first airline she 1 point

Otrada [13]

Answer:

80

Step-by-step explanation:

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3 years ago

I really need help with this Triangle problem.

julia-pushkina [17]

Answer:

x = 10

y = 20

Step-by-step explanation:

$\tan \: 30 \degree = \frac{x}{10 \sqrt{3} } \\ \\ \frac{1}{ \sqrt{3} } = \frac{x}{10 \sqrt{3} } \\ \\ \sqrt{3} x = 10 \sqrt{3} \\ \\ x = \frac{10 \sqrt{3} }{ \sqrt{3} } \\ \\ x = 10 \\ \\ \cos 30 \degree = \frac{10 \sqrt{3} }{y} \\ \\ \frac{ \sqrt{3} }{2} = \frac{10 \sqrt{3} }{y} \\ \\ y = 10 \sqrt{3} \times \frac{2}{ \sqrt{3} } \\ \\ y = 10 \times 2 \\ \\ y = 20$

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3 years ago

What would -2 - (-7) be? And how would you do that

zavuch27 [327]

Answer:

5

Step-by-step explanation:

Okay, so adding negative numbers can get very tricky, but I think I can help

Since there are two negative signs next to each other, they both cancel out and become positive so instead you get

-2+7

And if you do this with a number line, if you start and negative 2 and keep going right 7 times, you get 5

I hope I helped! I know negative numbers can be really difficult, but once you get the hang of it I bet you'll be great!

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3 years ago

What are. the coordinates of the quadrilateral STUV when reflected over the X-axis.

wolverine [178]

Step-by-step explanation:

hi friend I can help you in this geometry work via Wazapp

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2 years ago

The lifetime of a machine part has a continuous distribution on the interval (0, 50) with probability density function f, whe

Strike441 [17]

Answer:

Probability that the lifetime of the machine part is less than 13 = 0.6782

Step-by-step explanation:

given that $f(x)=(10+x)^{-2}$

Normalizing the function we get

$\int_{0 }^{50}cf(x)dx=1$

$\int_{0 }^{50}c(10+x)^{-2}dx=1$

$\therefore a=\frac{1}{\int_{0 }^{50}(10+x)^{-2}dx}$

$\therefore a=12$

$P(x< 13)=\int_{0}^{13}12(10+x)^{-2}dx\\\\P(X< 13)=0.6782$

4 0

3 years ago