Answer: the answer is D.
Step-by-step explanation:
Answer:
86 cm²
Step-by-step explanation:
<u>1) Calculate the area of the square</u>

Therefore, the area of the square is 400 cm².
<u>2) Calculate the area of the circle</u>

we can substitute with 3.14. To find the radius, we divide the diameter of the circle by 2. 20 cm is the diameter of the circle, so therefore, its radius is 10 cm.

Therefore, the area of the circle is 314 cm².
<u>3) Subtract the area of the circle from the area of the square</u>

Therefore, the area of the shaded region is 86 cm².
I hope this helps!
Answer:
x= -9/4=-2.25
Step-by-step explanation:
plz rate and thank me if it is correct again i am a begginer!!! thank you:)
4n² - 15n + 14<span> is always the product of two numbers, for it to be prime number, one of these factors must be either 1 or -1.
Case n - 2 = 1
That would be n = 3
Then </span>4n² - 15n + 14<span> = 5 , which is prime.
Case n - 2 = -1
That would be n = 1
Then </span>4n<span>² - 15n + 14 = 3, which is also prime.
Case 4n - 7 = 1
That would be n = 2 and that makes other factor (n-2) zero so it's not prime
Case 4n-7 = -1
That would be n = 3/2 which is not integer, so </span>4n<span>² - 15n + 14 will not be interger.
For any other n values, </span>4n<span>² - 15n + 14 will be composite number since it is product of two factors.
Therefore we are left with n = 1 and n = 3; only two values of n.</span>
Yes..The answer s D. because the circles are congruent and in the question, it stated that it wanted circles that were similar, not congruent