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4 years ago

What are the steps needed to complete this problem? 5n + 34 = -2 ( 1 - 7n )

Mathematics

2 answers:

ki77a [65]4 years ago

7 0

m = 4

First, distribute the -2. This gives you 5n+34=-2+14n.

Now you can subtract 5n from both sides. This gives you 34=-2+9n.

Now, add 2 to both sides. This gives you 36=9n.

Now, divide everything by 9. This gives you 4=n.

evablogger [386]4 years ago

6 0

DONE ! VERY EASY STEP TO STEP !

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X+ y + z = -3 3y - Z = 4 2x- y - 2z = -5

snow_lady [41]

Answer:

(-3, 1, -1)

Step-by-step explanation:

x + y + z = -3 --> (1)
3y - z = 4 --> (2)
2x - y - 2z = -5 --> (3)

Add up (1) and (2)

x + 3y + y + z - z = -3 + 4 ⇒ x + 4y = 1 --> (4)

Double (2) and subtract from (3)

2x - y - 2z - 2(3y - z) = -5 - 2(4) ⇒ 2x - y - 2z - 6y + 2z = -5 - 8
2x - 7y = -13 --> (5)

Double (4) and subtract (5)

2(x + 4y) - 2x + 7y = 2 + 13 ⇒ 2x + 8y - 2x + 7y = 15 ⇒ 15y = 15 ⇒ y = 1

Finding x

x + 4(1) = 1 ⇒ x = 1 - 4 ⇒ x = -3

Finding z

-3 + 1 + z = -3 ⇒ z = -1

So the answer is:

(-3, 1, -1)

4 0

3 years ago

Write a linear function with the values (-1,8) and (5,6)

valentina_108 [34]

Let the function be y = ax + c.

For (-1,8), 8 = a(-1) + c → 8 = - a + c

For (5,6), 6 = a(5) + c → 6 = 5a + c

Subtract one from abother,

2 = - 6a => - 1/3 = a

Hence, 8 = - 1/3 + c → 23/3 = c

Relation is:

y = (-1/3)x + (23/3)

3y = - x + 23

3y = 23 - x

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4 years ago

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egoroff_w [7]

Answer: the answer is 20

Step-by-step explanation:

Use order of operations and divide 8 by 2 and you get 4. Then use the PEMDAS (parentheses,exponents,multiplacation,division,addition, subtraction) method. Go left to right. And solve. :) I hope this helps

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Which property justifies the procedure used to eliminate fractions and decimals from equations?

igor_vitrenko [27]

By multiplying both sides of an equation by a number, you can eliminate all decimals and fractions, so the answer is C.

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3 years ago

Is 4/12 more or less than 4/6?

lorasvet [3.4K]

Answer: Less

Step-by-step explanation:

If you break down each fraction into a decimal form you will get,

4/12 = 0.33

4/6 = 0.66

Making 4/12 less than 4/6.

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