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stiks02 [169]
3 years ago
8

Solve the following linear system using elimination

Mathematics
1 answer:
lozanna [386]3 years ago
4 0
A) 6x -8y  = 36
B) 6x - y = 15

Multiply equation B by -1
B) -6x + y = -15  then add it to A)
A) 6x -8y = 36

-7y = 21
y = -3

and x = 2

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Plz help ASAP need problem quickly thx
dezoksy [38]

Answer:

A

Step-by-step explanation:

2(3) + (3) = 9

3(3) - 2(3) = 3

6 0
3 years ago
Read 2 more answers
Zoe used 3/8 of her ribbon to wrap a present. If she uses 9 feet of ribbon for the present how much ribbon did Zoe have it first
MArishka [77]

Let the total ribbon Zoe had was x feet.

Out of x feet, she used 3/8 part of it.

Hence, \frac{3x}{8}

3/8 part of the original ribbon is equal to 9 feet.

Hence, we get

\frac{3x}{8} = 9

=> Multiply 8 on both sides.

3x=72

Divide both sides by 3

\frac{3x}{3}=\frac{72}{3}

x=24 ft

Zoe had 24 feet of ribbon in starting... Answer

8 0
3 years ago
What should you do if in the REVIEW phase of problem solving, you find the answer doesn't make sense?
N76 [4]

Answer:

I would recheck the answer

Step-by-step explanation:

there is my opinion :)

4 0
3 years ago
What’s the volume of the pyramid
ValentinkaMS [17]

Answer:

The volume of the given pyramid is 300 cm³

Step-by-step explanation:

The volume of a pyramid, V_{pyramid}, is given as follows;

V_{pyramid} = \dfrac{1}{3} \times Base \ area \times Height

The height of the pyramid = 12 cm

The side length of the square base of the pyramid = 5 cm

The base area of the pyramid polyhedron with square base = 5 cm × 5 cm = 25 cm²

Therefore, by substitution, we have;

V_{pyramid} = \dfrac{1}{3} \times 25 \ cm^2 \times 12 \ cm = 300 \ cm^3

The volume of the given pyramid, V = 300 cm³.

5 0
3 years ago
Each of 5 friends got a full box of snacks and an extra 6 snacks. Write an equation to show how many snacks are in all those box
loris [4]
I think an equation for this could be 5x+6=y
This can be explained as x representing how much the five friends got and y equaling the total. Hope this helps!
8 0
2 years ago
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