Answer:
13.7
Step-by-step explanation:
to work this out you need to find the area of the square.
The formula for working out the area of a square is to multiply the length and the width together.
So you would multiply 8 by 8 to give the area of this square.

You would then need to work out the area of the circle using the formula:

=50.27
Then to work out the area shaded you will subtract the area of the circle from the area of the square to give you the area of the shaded region.
=13.73
rounded to 13.7
This is for question 22
Answer:
∠2
Step-by-step explanation:
∠2 + ∠3 = 90°
complimentary angles add up to 90°
Answer:
To be greater than 20, we can either use values of 2 through 9 for the first digit, which is a total of 8 digits. For the second digit, in order to be even, we can use 1, 3, 5, 7, or 9. ( 5 options). Multiply together and we have the total number of possibilities.
By subtracting the given addend to the sum, we see that the other addend is:

<h3>
How to get the other addend?</h3>
We know that the sum of two polynomials is:

One of the addends is:

To get the other addend, we can subtract the given addend to the sum:

Then we can conclude that the other addend is:

If you want to learn more about polynomials:
brainly.com/question/4142886
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Answer:
y = t/31 - d/31
Step-by-step explanation:
Solve for y:
d + 12 y = t - 19 y
Subtract d - 19 y from both sides:
31 y = t - d
Divide both sides by 31:
Answer: y = t/31 - d/31