Area= 2πr
So,
If you were to multiply the radius by 2 since 2 is not in the equations,
4*2= 8
8π ft^2 would be the correct answer.
I hope this helps!
~kaikers
35r+12r =
47r is your answer:))
Answer:
x° = 50°
Step-by-step explanation:
x° + 130° = 180° (adjacent angles add up to 180°)
x° = 180° - 130°
x° = 50°
Answer: 625
Step-by-step explanation:
Here are the steps to convert .3125 into fraction form:
First we write .3125 as
.3125
1
Now we multiply both the numerator and denominator by 10 for each digit after the decimal point:
.3125
1
=
.3125 x 10000
1 x 10000
=
3125
10000
In order to reduce the fraction we find the Greatest Common Factor (GCF) for 3125 and 10000. Keep in mind a factor is just a number that divides into another number without any remainder.
The factors of 3125 are: 1 5 25 125 625 3125
The factors of 10000 are: 1 2 4 5 8 10 16 20 25 40 50 80 100 125 200 250 400 500 625 1000 1250 2000 2500 5000 10000
The Greatest Common Factor (GCF) for both 3125 and 10000 is: 625
Answer:
a = 7 and b = - 18
Step-by-step explanation:
If (x - 1) is a factor of f(x) then x = 1 is a root and f(1) = 0, thus
f(1) = 1³ + 10(1)² + a + b = 0 and
1 + 10 + a + b = 0 ⇒ a + b = - 11 → (1)
Similarly if
(x + 2) is a factor then x = - 2 is a root and f(- 2) = 0
f(- 2) = (- 2)³ + 10(- 2)² - 2a + b = 0, thus
- 8 + 40 - 2a + b = 0 ⇒ - 2a + b = - 32 → (2)
Solve (1) and (2) simultaneously
Subtract (1) from (2)
- 3a = - 21 ( divide both sides by 3)
a = 7
Substitute a = 7 in (1)
7 + b = - 11 ⇒ b = - 11 - 7 = - 18
The required polynomial is
f(x) = x³ + 10x² + 7x - 18
