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matrenka [14]
3 years ago
11

Solve the equation for x 80 = 5x + 2x -10

Mathematics
2 answers:
Setler79 [48]3 years ago
7 0

Answer:

x= 12.857

Step-by-step explanation:

80=5x + 2x -10  combine like terms

80= 7x -10 distributed 10 to both sides

90 =7x  divide both sides by 7

12.857 =x    

lianna [129]3 years ago
3 0

Answer:

x = 12 6/7 or 90/7

Step-by-step explanation:

5x + 2x - 10 = 80

^^add you like terms (5x + 2x)

7x - 10 = 80

add -10 to both sides so it cancels out

7x = 90

divide 7 from both sides to get x by itself

x = 12 6/7

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Which one is right I need to know the answer
Arturiano [62]

Answer:

your answer will be option C).0

Step-by-step explanation:

hope it helps you

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3 years ago
Write an equation for the line that is perpendicular to the line y= -9 that passes through the point (-3,4).
Liula [17]

Answer:

Step-by-step explanation:

x= -3

7 0
3 years ago
I NEED HELP ASAP, THAK YOU IN ADVANCED
german

1. If Sheryl works 6.5 hours in a day, she makes approximately 85 currency.

2A. If Sherly had not worked for a single hour, she would get no money.

If she worked for 1 hour, here wage would approximately be equal to 13 currency.

If Sheryl works 9 hours she will make approximately 117 currency.

Step-by-step explanation:

Step 1:

To calculate how much Sheryl makes if she works 6.5 hours a day, we check the graph to see what the y value of the graph is when x =6.5.

When x =6.5, the line falls on y = 85.

So if Sheryl works 6.5 hours in a day, she makes approximately 85 currency.

Step 2:

The two points on the graph are at (0, 0) and (1, 13).

This means that if Sherly had not worked for a single hour, she would get no money.

If she worked for 1 hour, here wage would approximately be equal to 13 currency.

These two statements explain the two points on the graph.

Step 3:

To calculate how much Sheryl makes if she works 9 hours, we must create an equation that represents how much money she makes.

If she earns approximately 13 currency an hour, her wage is y = 13x, where x is the number of hours worked and y is the wage.

When x =9, y = 9(13) = 117.

So if Sheryl works 9 hours she will make approximately 117 currency.

5 0
3 years ago
Solution of the equation<br> 3x/5+1=4x/15+7
Anika [276]

Answer:

x = 18

Step-by-step explanation:

Given

\frac{3x}{5} + 1 = \frac{4x}{15} + 7 ( subtract 1 from both sides )

\frac{3x}{5} = \frac{4x}{15} + 6

Multiply through by 15 to clear the fractions

9x = 4x + 90 ( subtract 4x from both sides )

5x = 90 ( divide both sides by 5 )

x = 18

4 0
3 years ago
It’s only one question plz help (DON’T GUESS NO LINKS) please I will do anything there is a part two I’m struggling and this is
pshichka [43]

Answer:

For question 1 it's B

For question 2 it's C

Step-by-step explanation:

<u>For question 1, you have to apply the "Triangle Inequality Theorem"</u>

A+B > C

B+C > A

A+C > B

Let's say that A=22, B=17, C= 14

22+17 > 14       True

17+14 > 22       True

22+14 > 17       True

Therefore, the answer is B

<u>For question 2, you apply the rule of the sum of the triangles which is 180°</u>

70+70+? = 180

140+? = 180

? = 40

Therefore, it's C

8 0
3 years ago
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