3 years ago

I need help studying for a quiz?

Mathematics

1 answer:

Slav-nsk [51]3 years ago

6 0

Answer:

what is the question I ask

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A square pyramid and a cube have the same total surface area. The width of the cube is 8 centimeters. The base of the pyramid is

azamat

Answer:

Step-by-step explanation:

surface area of cube = 6×8² = 384 cm²

lateral area of pyramid = surface area of pyramid - base area

= 384 - 8²

= 320 cm²

area of triangular face = 320/4 = 80 = ½(base)(slant height) = ½(8)(slant height)

slant height = 20 cm

6 0

3 years ago

If y = -12 when x = 9, find u when x = -4

True [87]

Answer:

y should equal -25 if i did the math right

Step-by-step explanation:

-12 and 9 have a difference of -21 so if i subtract -21 from -4 it would equal -25.. hope this helps!!

4 0

3 years ago

Triangle ABC is similar to triangle DEF.

amid [387]

Answer:

1.5

Step-by-step explanation:

12 / 8 = 1.5

8 0

2 years ago

A cube has a side length of x inches. What expression represents the total volume, in cubic inches, of the cube?

Pie

Answer:

Volume = $x^3$ cubic inches

Step-by-step explanation:

A cube is the 3D version of a square. Since one side length is x inches, all the other side lengths are same, x inches each.

We know,

Volume = area of base * height

THe base is a square and the area is side * side. We know each side is x, so we have:

Area of Square = Area of Base = x * x = $x^2$

Now, we know height is also same side length, x, thus the volume becomes:

Volume = area of base * height

Volume = $x^2*x$

We add the exponents when we have same base multiplied, so the expression for volume becomes:

Volume = $x^2*x=x^3$

8 0

3 years ago

This year, gasoline costs $4 per gallon. This is a 125% increase over the cost 3 years ago. What expression can be used to deter

pochemuha

The equation would be, 4/125%.

7 0

3 years ago