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2 years ago

Plz help i need to graduate

Mathematics

1 answer:

Inessa05 [86]2 years ago

5 0

Answer:

I hope this helps..

x y

0 6

1 12

2 12

3 12

4 18

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Solve the equation and check the solution.

myrzilka [38]

A - 2 1/2 = 1 1/2

Solve for A by adding 2 1/2 to both sides:

A = 1 1/2 + 2 1/2

A = 4

The answer is c. A = 4

Check: 4 - 2 1/2 = 1 1/2

8 0

2 years ago

A glass paperweight has a composite shape: a square pyramid fitting exacty on top of an 8 centimeter cube. The pyramid has a hei

ArbitrLikvidat [17]

Answer:

Part 1) The volume of the paperweight is $576\ cm^{3}$

Part 2) The total surface area of the paperweight is $400\ cm^{2}$

Step-by-step explanation:

Part 1) what is the volume of the paperweight?

we know that

The volume of the paperweight is equal to the volume of the square pyramid plus the volume of the cube

step 1

Find the volume of the pyramid

The volume of the pyramid is equal to

$V=\frac{1}{3}BH$

where

B is the area of the square base

H is the height of the pyramid

$B=8^{2}=64\ cm^{2}$

$H=3\ cm$

substitute

$V=\frac{1}{3}(64)(3)=64\ cm^{3}$

step 2

Find the volume of the cube

The volume of the cube is equal to

$V=b^{3}$

$V=8^{3}=512\ cm^{3}$

step 3

Find the volume of the paperweight

$64\ cm^{3}+512\ cm^{3}=576\ cm^{3}$

Part 2) what is the total surface area of the paperweight?

we know that

The total surface area of the paperweight is equal to the surface area of 5 faces of the cube plus the lateral area of the pyramid

step 1

Find the surface area of 5 faces of the cube

$SA=5b^{2}$

$SA=5(8^{2})=320\ cm^{2}$

step 2

Find the lateral area of the pyramid

$LA=4[\frac{1}{2}bh]$

$LA=4[\frac{1}{2}(8)(5)]=80\ cm^{2}$

step 3

Find the total surface area of the paperweight

$320\ cm^{2}+80\ cm^{2}=400\ cm^{2}$

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2 years ago

Is this a function? {(-1,3); (-2,-3); (2,0); (0,2)}

Molodets [167]

Yes, because the x’s aren’t repeated

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2 years ago

If f(x)=3x^2 +x-2, then f(-2)= *12 *-16 *8 *32 help!

uysha [10]

8 is the answer

Ignore this part, Brainly wants more than 20 characters

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2 years ago

Another one Topic: Law of Indices Evaluate this; (13⁰÷5)²

Zarrin [17]

Answer:

Steps:

(13⁰/5)²

(1÷5)²

1²÷5²

1÷25

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2 years ago