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alekssr [168]
2 years ago
5

What is 3x+4x-7=8-3x+11 need step by step explanation

Mathematics
1 answer:
Nadya [2.5K]2 years ago
6 0

Answer:

exact form: 13/5

Decimal form: 2.6

x= 2 3/5

Step-by-step explanation:

3x+4x-7=8-3x+11

7x-7=8-3+11

7x-19-3x

7x-7 + 7 =-3x+19+7

7x=-3+26

10x=26

x= 13/5

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Allisa [31]

Answer:

x = -4, x = 1

Step-by-step explanation:

Now I do not know why you said done, but just saying, if you are done with a question, you should delete it. Now I am just going to assume you knew this and move on with the solution of the problem.

When you factor this equation, you will get (x+4)(x-1).

You can then solve for x using zero product property. The first root is -4 and the second root is 1.

4 0
3 years ago
Randall would like to purchase a pair of shoes that are regulary priced at $88. The store is running a 20% off sale. There is al
Advocard [28]

The answer would be D.

Randall should choose the rebate offer because the shoes will be $2.40 less than if he chooses the sale price.

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88 - 20 = 68

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7 0
2 years ago
Complete the equation, by supplying the missing exponent.<br> m•n2•m3= m 11n2
MaRussiya [10]

Given:

Consider the given equation is:

m^?\cdot n^2\cdot m^3=m^{11}\cdot n^2

To find:

The missing exponent.

Solution:

Let x be the missing exponent. Then the given equation can be written as

m^x\cdot n^2\cdot m^3=m^{11}\cdot n^2

It can be rewritten as:

(m^x\cdot m^3)\cdot n^2=m^{11}\cdot n^2

m^{x+3}\cdot n^2=m^{11}\cdot n^2      [\because a^ma^n=a^{m+n}]

On comparing the coefficient of m, we get

x+3=11

x=11-3

x=8

Therefore, the value of the missing exponent is 8. So, the complete equation is m^8\cdot n^2\cdot m^3=m^{11}\cdot n^2.

4 0
2 years ago
Help please ((: ughhh
Dvinal [7]

1/2............................................ I hope this helps



4 0
3 years ago
Write an equation that you can use to find the value of x.
MariettaO [177]
Line CA is a straight line, meaning it adds up to 180°

Line BE splits the line into two supplementary angles, because when the two angles are added together they will equal 180°

Using the rule of supplementary angles, we can then make the equation 3x + 8x + 15 = 180

Now, simplify the equation by combining like terms

11x + 15 = 180

To solve, isolate x

11x + 15 = 180
11x = 165
x = 15
7 0
2 years ago
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