Answer:
Step-by-step explanation:
b = 10
Substitute b in every equation below and compare the results
<u>A. 2(b + 4) = 16
</u>
- 2(10 + 4) = 2(14) = 28 ≠ 16, incorrect
<u>B. 2(b + 2) = 40
</u>
- 2(10 + 2) = 2(12) = 24 ≠ 40, incorrect
<u>C. 3(b - 2) = 24
</u>
- 3(10 - 2) = 3(8) = 24, correct
<u>D. 2(8 + b) = 42
</u>
- 2(8 + 10) = 2(18) = 36 ≠ 42, incorrect
<u>E. 3(b - 4) = 20</u>
- 3(10 - 4) = 3(6) = 18 ≠ 20, incorrect
ANSWER
96 yd
EXPLANATION
Let the width of the rectangle be w, then, the length of the rectangle will be:
The area of a rectangle is calculated using the formula:
It was given that, the area of the rectangle is 320yd²
Divide both sides by 5.
Take square root of both sides to get:
This means the length is
The perimeter of a rectangle is given by:
P=2(w+l)
We plug in the values to get:
The perimeter is 96yd
First find the equation of the given line. Let y=mx+b. 1=4m+b;-3=-4m+b. Solving, and get b=-1, m=1/2. So the line that is perpendicular to it must have slope -1/m=-2. Suppose the form is y=-2x+b, since it passes through (-4,3), the point slope form is y-3=-2(x+4).
Answer:
Step-by-step explanation:
The taller candle is 16 cm and loses 2.5 cm every hour
<u>Equation for the taller candle:</u>