3 years ago

Please help... need help ASAP

Mathematics

1 answer:

abruzzese [7]3 years ago

7 0

Answer:

did the test got it right.

Step-by-step explanation:

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A box in the shape of a rectangular prism is approximately 9 inches long,has an equilateral triangle shaped base with side lengt

vfiekz [6]

Answer:

33.75 cubic inches of styrofoam can be placed inside the container.

Step-by-step explanation:

Based on given information, the volume of the prism ( $V$ ), in cubic inches, is determined by using this formula:

$V = \frac{1}{2}\cdot b\cdot h \cdot l$ (1)

Where:

$b$ - Base of the triangular face, in inches.

$h$ - Height of the triangular face, in inches.

$l$ - Length of the prism, in inches.

If we know that $b = 3\,in$ , $h = 2.5\,in$ and $l = 9\,in$ , then the volume of the prism is:

$V = \frac{1}{2}\cdot b\cdot h \cdot l$

$V = 33.75\,in^{3}$

33.75 cubic inches of styrofoam can be placed inside the container.

3 0

3 years ago

The volume of a rectangular solid is 180 cubic centimeters. The length is 10 centimeters, and the width is 4 centimeters. Using

boyakko [2]

V = 180 cm3
l = 10 cm
w = 4 cm
h = ?

V=lwh, so to get h, divide equation by lw, to get h=V/(lw).

h = 180/(10*4) = 4.5 cm

5 0

4 years ago

Karina is creating two pyramids with the nets below using construction paper. In both nets, all of the triangular faces of the p

sleet_krkn [62]

Answer:

144 sq in

Step-by-step explanation:

Face height=9, bases=6 in

#Assume the pyramid has a square base.

First we need to calculate the perpendicular height of the pyramid:

$#Pythagorean \ Theorem\\a^2+b^2=c^2\\9^2-(0.5\times 6)^2=h^2\\72=h^2\\h=\sqrt{72} \ in$

Now to find the surface area of each pyramid:

$A=lw+l\sqrt{(w/2)^2+h^2}+w\sqrt{(l/w)^2+h^2}\\\\\#w=l=6,h=\sqrt{72}\\\\A=6^2+6\sqrt{(6/2)^2+72}+6\sqrt{(6/6)^2+72}\\\\A\approx 144\ sq \ in$

Hence amount of construction paper needed to make each pyramid is 144 sq in

3 0

3 years ago

Mr. Williams sells vehicles to 20% of the sales lot. if 65 people came to the lot last month,how many vehicles did he sell?

VashaNatasha [74]

13 cars
65x.20=13 is 20percent

6 0

4 years ago

Noah wants to save $700 in 10 months. He thinks he can earn $11 interest. Why is it reasonable that he should save $69 a month?

konstantin123 [22]

Alright not entirely sure but here is my theory
69x100=690 if he has the 11$ interest rate it would be 701$ in 10 months
so he would have 1 more dollar <span />

6 0

3 years ago

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