2n=n-5 subtract n from both sides
n=-5
check...
2(-5)=(-5)-5
-10=-10
To solve this problem, you must follow the proccedure below:
1. T<span>he block was cube-shaped with side lengths of 9 inches and to calculate its volume (V1), you must apply the following formula:
V1=s</span>³
<span>
s is the side of the cube (s=9)
2. Therefore, you have:
V1=s</span>³
V1=(9 inches)³
V1=729 inches³
<span>
3. The lengths of the sides of the hole is 3 inches. Therefore, you must calculate its volume (V2) by applying the formula for calculate the volume of a rectangular prism:
V2=LxWxH
L is the length (L=3 inches).
W is the width (W=3 inches).
H is the heigth (H=9 inches).
4. Therefore, you have:
V2=(3 inches)(3 inches)(9 inches)
V2=81 inches
</span><span>
5. The amount of wood that was left after the hole was cut out, is:
</span>
Vt=V1-V2
Vt=648 inches³
See attached PDF. (The censor thinks there are some unseemly words in there.)
ANSWER: y=6
straight lines are 180° and all the angles in a triangle add up to 180°
The hypotenuse of the triangle is given by:
Substituting values:
Clearing CB we have:
Then, the perimeter of the triangle is:
Substituting values:
Answer: the perimeter of triangle BRC in units is: D.6 + 2√5
