2 years ago

Im doing an extra credit assignment and I need someone to help me solve by substitution method

Mathematics

1 answer:

AnnyKZ [126]1 year ago

6 0

Answer:

(-2,1)

Step-by-step explanation:

that is where the two graphs intersect

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Really easy! PLEASE HELP, I Will mark Brainliest

zlopas [31]

Answer:

(x,y)=(-5,5)

Step-by-step explanation:

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2 years ago

A first number plus twice a second number is 9. Twice the first number plus the second totals 27. Find the numbers

SOVA2 [1]

Create a a system of 2 equations: 2x + y = 27 and 2y + x = 9, with x being the first number and y being the second. solve for the two variables and you'll get the first number is 15 and the second is -3.

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3 years ago

You have a cell phone that is 5 inches in height, 0.5 inches in width, and 2.5 inches in length, what is the surface area in sq

fenix001 [56]

Answer: 32.5sq in I believe

I multiplied all the sides (ex 0.5x2.5x2) and did that with all the other sides

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3 years ago

Ben made a model (shown below) of the square pyramid he plans to build when he grows up.

elena-s [515]

Answer:

$336 m^2$

Step-by-step explanation:

The surface area of a square pyramid is the sum of the area of the squared base + 4 times the area of each triangular face, therefore:

$A=A_b + 4A_t$

where:

$A_b=L^2$ is the area of the base, where

L is the length of the base

$A_t=\frac{1}{2}Lh$ is the area of each triangular face, where

h is the height of the face

Substituting,

$A=L^2+2Lh$

For the model in this problem,

L = 12

h = 8

Therefore, the surface area here is:

$A=12^2 +2(12)(8)=336$

4 0

2 years ago

Read 2 more answers

Kiara made a square baby blanket she decided to add one foot of material to one side then cut 4 inches of material off from the

schepotkina [342]

Answer:

Step-by-step explanation:

960 which is the area u divide by the one foot which is 144 square units to get your answer,6.66666666667

8 0

2 years ago