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Andreyy89
4 years ago
15

Solve by elimination. (Help ASAP please)

Mathematics
1 answer:
salantis [7]4 years ago
8 0

Answer:

D

Step-by-step explanation:

x=x

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The volume of cube A is 216 cubic inches. The length of each edge in cube B is 2 inches longer than the length of each edge in c
lord [1]

Answer: 296 cubic in.

Step-by-step explanation: Since we are talking about cubes, and you know the volume of a cube is lwh, we know l, w and h are all equal, meaning be can cube root the volume to find all side lengths. The cube root of 216 is 6, so if each side in cube B is 2 longer, then the lwh for B is 8*8*8, or 512. 512-216=296.

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4 years ago
Sugar Rounds Donut Shop offers 2 free donuts with every 20 purchased donuts. Sweet Delights Donut Shop offers 3 free donuts with
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there the same ratio because there both offering the same ratio of of there number

3x10=30 ratio : 10

2x10=20 ratio: 10

Step-by-step explanation:

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3 years ago
Based on the diagram, which reason justifies this statement?
Norma-Jean [14]

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Complements of the same angle are congruent.

Step-by-step explanation:

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3 years ago
Find the solutions to the following linear-quadratic systems algebraically. Select the ordered pair that is one of the correct s
Ghella [55]

Answer:

(-2, 6)

Step-by-step explanation:

we have

y=x^{2} +3x+8 ----> equation A

y=2x+10 ----> equation B

equate equation A and equation B

x^{2} +3x+8=2x+10

x^{2} +3x+8-2x-10=0

x^{2} +x-2=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2} +x-2=0

so

a=1\\b=1\\c=-2

substitute in the formula

x=\frac{-1\pm\sqrt{1^{2}-4(1)(-2)}} {2(1)}

x=\frac{-1\pm\sqrt{9}} {2}

x=\frac{-1\pm3} {2}

x=\frac{-1+3} {2}=1

x=\frac{-1-3} {2}=-2

Find the values of y

For x=1

y=2(1)+10=12

For x=-2

y=2(-2)+10=6

therefore

The solutions are (1,12) and (-2,6)

3 0
3 years ago
What is 7.1+5.4+2.9 im very confused ​
LenKa [72]

Answer:

15.4? Are you just adding?

Step-by-step explanation:

6 0
3 years ago
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