When the firecracker hits the ground, H(t) = 0.0 = -16t^2 + 90t + 160 Using the quadratic formula,t = (-90 +- sqrt(90^2 - 4(-16)(160))) / 2(-16)t = -1.42 ort = 7.04
The negative time is extraneous. Therefore,t = 7.04 s.
Seven Seconds is your answer!
Circumference: 2πr
Circumference: 2(3.14)(x + 1)
Circumference: 6.28(x + 1)
Circumference: 6.28(x) + 6.28(1)
Circumference: 6.28x + 6.28
Area: πr²
Area: 3.14(x + 1)²
Area: 3.14(x +1)(x + 1)
Area: 3.14(x(x + 1) + 1(x + 1))
Area: 3.14(x(x) + x(1) + 1(x) 1(1))
Area: 3.14(x² + x + x + 1)
Area: 3.14(x² + 2x + 1)
Area: 3.14(x²) + 3.14(2x) + 3.14(1)
Area: 3.14x² + 6.28x + 3.14
Answer:
Step-by-step explanation:
Given
Required
Determine the quotient
See attachment for complete process.
First, divide 125x^3 by 5x
Write 
at the top
Multiply 
by
Subtract from 125x^3 - 8
i.e.
Step 2:
Divide 50x^2 by 5x
Write 
at the top
Multiply by
Subtract from 50x^2 - 8
i.e.
Step 3:
Divide 20x by 5x
Write 
at the top
Multiply by
Subtract from 20x - 8
i.e.
Hence:
A number is a mathematical object used to count, measure, and label
