Answer:
<u>B</u><u>.</u><u>2</u><u>:</u><u>3</u>
Step-by-step explanation:
hope it helps brainliest me please
First integral
Since
is a linear function, its graph is a line. This means that you can decompose the area under its graph as the sum of a right triangle and a rectangle, as shown in the attached image.
All the dimensions are fairly easy to deduce: we have

So, the area of the triangle is

For the rectangle, we have

So, the total area is 
Second integral
We have

So, this function is the upper half of the unit circle (the two halves are the functions
)
Since the area of the unit circle is
, the value of the integral is 
Third integral
It follows the exact same logic as the first one, you only have to adjust the numbers.
The rate in

<h3>How to find rate is riya applying mulch in m^3/m^2 ?</h3>
given that riya applies it at a rate of 250,000 cm^3 of mulch for every m^2 of garden space.
we already know that 1m = 100cm.
so, each side of this cube is 100cm in length.
so,
To find what is the volume in cubic metres.

so, the rate is
Learn more about problems on garden, refer :
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Disclaimer : This question was given incomplete on portal.Here is complete question.
Question : Riya is applying mulch to her garden.She applies it at a rate of 250,000 cm^3 of mulch for every m^2 of garden space. At what rate is riya applying mulch in m^3/m^2
Answer: You bought 7 books and you also bought 4 magazines
Explanation:
x = # of books purchased
y = # of magazines purchased
System of equations:
8x + 5y = 76
x + y = 11
Let’s use elimination in this case, but substitution can also work.
8x + 5y = 76
Multiply the (x + y = 11) by -8
We get:
8x + 5y = 76
-8x - 8y = -88
The xs cancel.
Add like terms.
-3y = -12
Divide by -3 on both sides
y = 4
Now plug in 4 into the (x + y = 11) equation to get x.
x + (4) = 11
Subtract 4 on both sides
x = 7