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Ne4ueva [31]
3 years ago
10

How to solve 2x+4 = 6x - 10

Mathematics
1 answer:
mars1129 [50]3 years ago
3 0

Answer:

Step-by-step explanation:

2x + 4 = 6x - 10

Minus 2x on both sides

4 = 4x - 10

Add 10 on both sides

14 = 4x

Divide by 4 on both sides

14/4 = x

x = 14/4

Simplify fraction

x = 7/2 or x = 3 1/2

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7. Jerry has 23 coins in nickels, n, and dimes, d. He
aliya0001 [1]

Answer:

17 nickles !

Step-by-step explanation:

First, identify the variables:

n = amount of nickels

d = amount of dimes

Next, setup the equations based on what you know.  The first equation is:

n + d = 28

For the second equation, we know that a dime is worth 10¢ and a nickel is 5¢, so it should be:

0.05n + 0.10d = 1.95

This a three-step answer:

In one formula (you can use any of them; most people use the simplest one), single out the variable on one side

Apply the first formula into the second formula, and solve it to get the value of one variable

Apply the answer from the second formula into the first formula, and solve it to get the value of the other variable

======

Step One:

n + d = 28

n + d - d = 28 - d

n = 28 - d

Step Two:

0.05n + 0.10d = 1.95

(0.05 * (28 - d)) + 0.10d = 1.95

1.40 - 0.05d + 0.10d = 1.95

1.40 + 0.05d = 1.95

1.40 - 1.40 + 0.05d = 1.95 - 1.40

0.05d = 0.55

d = 11

Step Three:

n = 28 - d

n = 28 - 11

n = 17

======

Your answer should be 17 nickels and 11 dimes.

You can double check by applying the variables into both formulas.

n + d = 28

17 + 11 = 28

28 = 28

0.05n + 0.10d = 1.95

(0.05 * 17) + (0.10 * 11) = 1.95

0.85 + 1.10 = 1.95

1.95 = 1.95

I hope this helped.

7 0
3 years ago
Write the word sentence as an equation. Then solve.
Burka [1]

Answer: EQUATION: p-6=-14 ANSWER: p=-8

Step-by-step explanation:

Just simply add 6 to both sides so p can be by by itself. -14+6=-8

Hope this helped you! ^_^

6 0
3 years ago
Read 2 more answers
Hey guys I just wanted to put this out there-
tino4ka555 [31]

ok thank you so much for the info

5 0
3 years ago
It takes 9 builders 54 days to complete a house.
Dima020 [189]

It would take 6 builders  36 days to complete the same house.

<h3>Who are builders?</h3>

Builders are those person whose job is to build or repair houses and other buildings.

We have,

9 builders take 54 days to complete a house.

So,

1  builder will take  (\frac{54}{9})  days to complete a house,

In the same way,

6  builder will take  (\frac{54}{9}*6)  days to complete a house,

i.e.

6  builder   =(\frac{54}{9}*6)= 36 days.

Hence, we can say that it would take 6 builders  36 days to complete the same house.

To know more about  builders and work click here

brainly.com/question/16924313

#SPJ2

5 0
2 years ago
Read 2 more answers
What is the waist to hip ratio? Calculate the WHR of a male with a waist measurement of 40 inches and hip measurement 2 inches l
aev [14]
Waist to Hip Ratio (WHR)  =  Waist Measurement / Hip Measurement

Waist Measurement = 40 inches
Hip Measurement = 2 inches less =  (40 -2) = 38 inches.

Waist to Hip Ratio (WHR)  =  40/38 =  1.0526

8 0
3 years ago
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