Answer:140ft2
Step-by-step explanation: area= base times height
Area=14ft . 10ft
Area=140ft2
Group x terms
(2x^2+8x)-12=0
undistribute 2
2(x^2+4x)-12=0
take 1/2 of 4 and square it, add negative and positive of it insde (2^2=4)
2(x^2+4x+4-4)-12=0
factor perfect square
2((x+2)^2-4)-12=0
distribute
2(x+2)^2-8-12=0
2(x+2)^2-20=0
add 20 to both sides
2(x+2)^2=20
divide both sides by 2
(x+2)^2=10
sqrt both sides, remember to take positive and negative root
x+2=+/-√10
minus 2 both sides
x=-2+√10 and -2-√10
It is Bioelectrical impedance machine, these devices are used to measure the percentage of fat on your body so it is B
Answer:
62.8 inches
Step-by-step explanation:
because C= 2pi
and 10 times 2 is 20 and 20 times 3.14 is 62.8
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Answer:
x = 4
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Explanation:
We're solving the equation: -8=-(x+4)
Solve:
-8=-(x+4)
Distribute the negative to the variables in the parenthesis.
-8 = -x - 4
Add 4 to both sides
-4 = -x
Divide by -1
4 = x (same as x = 4)
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