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Ronch [10]
4 years ago
6

Jordan wants to solve the following system using the elimination method:

Mathematics
1 answer:
sergeinik [125]4 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Given the 2 equations

2x + 3y = 10 → (1)

x + y = 7 → (2)

Multiplying (2) by - 3 and adding to (1) will eliminate y

- 3x - 3y = - 21 → (3)

Add (1) and (3) term by term to eliminate y, that is

- x = - 11 ( multiply both sides by - 1 )

x = 11

Substitute x = 11 into either of the 2 equations and evaluate for y

Substituting into (2)

11 + y = 7 ( subtract 11 from both sides )

y = - 4

Solution is (11, - 4 )

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Can someone please help with my math, I don't get this??​
scoray [572]

Answer:

11

Step-by-step explanation:

add all together and divided by 3

33 divied by 3=11

hoped it helped

3 0
2 years ago
**10 POINTS PLEASE HELP!!**
Sliva [168]

Answer:

The volume increases by a factor or 64. When the cube is dilated, each side length is increased by 4, so the volume is increased by 64.

Step-by-step explanation:

Let L represents the Length of the cube before it's dilated.

Volume, V1 = Length * Length * Length

Volume, V1 = L * L * L

Volume, V1 = L³

When the cube is dilated by a factor of 4.

The new Length becomes 4L.

The new volume is calculated as thus.

New Volume, V2 = 4L * 4L * 4L

New Volume, V2 = 64L³

Dividing the new volume by the old volume gives the increment factor.

Factor = New Volume ÷ Old Volume

Factor = V2/V1

Factor = 64L³/L³

Factor = 64.

Hence, when the sides of the cube is dilated by 4, the volume increases by a factor of 64.

Filling the gap of the given sentence;

"The volume increases by a factor or 64. When the cube is dilated, each side length is increased by 4, so the volume is increased by 64"

8 0
3 years ago
I need help with these math questions please!!
REY [17]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Solve for K please help
algol [13]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
SOMEONE PLEASE HELP ME!!!!!!!
OleMash [197]

Answer:

Step-by-step explanation:

\frac{57}{40.3}=\frac{23}{QR}  \\

cross multiply

57(QR)=926.9

QR=16.26...

round to nearest tenth

QR=16.3

4 0
3 years ago
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