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2 years ago

(-2v2+19v-5) - (-4v2+v-23)? How to do????!!!!! Thank you

Mathematics

2 answers:

dalvyx [7]2 years ago

8 0

Is that really a problem of just something random

Stels [109]2 years ago

6 0

Answer:

$2v^2+18v+18$

Step-by-step explanation:

$(-2v^2+19v-5)-(-4v^2+v-23)\\=-2v^2+19v-5+4v^2-v+23\\=2v^2+18v+18$

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The bananas are not an equal number so you would not have the same amount unless you take one out.

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3 years ago

Here are two similar rectangles.

asambeis [7]

Answer:

$40.32cm^{2}$

Step-by-step explanation

4*1.2=4.8

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8.4*4.8=40.32

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3 years ago

Which of the following is equivalent to the expression below?-36A. -6B. 6ОООC. 6D. -6

Vadim26 [7]

SOLUTION;

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6 0

1 year 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

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

8 0

3 years ago

Can someone help me out? (Show work on how to solve)

belka [17]

Answer:

dghggjj

Step-by-step explanation:

s gm knfc JC. jz. jz. .xx nkcmxd I nt☺️️

8 0

3 years ago

Read 2 more answers