Answer:
6 or 4?
Step-by-step explanation:
Answer:24^4+13x²-7
Step-by-step explanation: calculate the products
(3x²-1)×(8x²+7)
calculate the parentheses
24x^4+21x^2-8x^2-7
collect like terms
solution
24x^4+13x^2-7
Answer:
The answer to your question is Circumference = 20π cm; Area = 100π cm
Step-by-step explanation:
Data
diameter = 20 cm
Circumference = ?
Area = ?
Process
1.- Write the formula of Circumference
Circumference = πd
-Substitution
Circumference = 20π
2.- Write the formula of area of a circle
Area of a circle = πr²
-Calculate the radius
radius = diameter/2
radius = 20/2
= 10 cm
-Substitution
Area = (10)²π
-Result
Area = 100π
120% of 75 is 90
Working out percentages
<span><span>Write 120% as 120/100
</span><span>Multiply with 75
120/100×75 = 90</span></span>
