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aev [14]
4 years ago
10

Homework help. Solve 4x-2=2x-10

Mathematics
1 answer:
ahrayia [7]4 years ago
7 0
4x - 2 = 2x - 10

First, subtract 2x from both sides. / Your problem should look like: 4x - 2 - 2x = -10
Second, subtract 4x - 2 - 2x to 2x - 2. / Your problem should look like: 2x - 2 = -10
Third, add 2 to both sides. / Your problem should look like: 2x = -10 + 2
Fourth, simplify -10 + 2 to get -8. / Your problem should look like: 2x = -8
Fifth, divide both sides by 2. / Your problem should look like: x =  -\frac{8}{2}
Sixth, simplify \frac{8}{2} to 4. / Your problem should look like: x = -4

Answer: x = -4

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Practice multiplying numbers by powers of 10.
Juliette [100K]
Answer:

Multiply (400 + 20 + 3) x 10000

Add 4 zeros to the end of 423

Step-by-step explanation:

423 x 10,000 = Adding the amount of zero’s in 10000 to 423



8 0
3 years ago
Two positive, consecutive, odd integers have a product of 143.
zhannawk [14.2K]

Answer:

<em>The answer is 13</em>

Step-by-step explanation:

Two positive and consecutive old numbers are x and x - 2.

=> x(x - 2) = 143

=> x^2 - 2x - 143 = 0

=> x^2 + 11x - 13x - 143 = 0

=> x(x + 11) - 13(x + 11) = 0

=> (x + 11)(x - 13) = 0

=>  x = -11 (invalid)

or x = 13 (valid), the remaining number is 13 - 2 = 11

=> The two numbers are 11 and 13, and the greater number is 13.

Hope this helps!

:)

7 0
3 years ago
Which equation is true when x = 5? A 8x = 80 B x + 4 = 9 C 10 ÷ x = 5 D x − 6= 1
Pie

Answer:

B

Step-by-step explanation:

A. 8 * x = 80

8 * 5 = 40. 40 is not 80, so it doesn't work.

B. x + 4 = 9

5 + 4 = 9. This works.

C. 10 ÷ x = 5

10 ÷ 5 = 2. 5 is not 2, so it doesn't work.

D. x - 6 = 1

5 - 6 = -1. 1 is not -1, so it doesn't work.

5 0
2 years ago
Evaluate the function <br><br> f(x) = 3x^2 + 4x + 19<br><br> Find f(-7)
yanalaym [24]

Answer:

Step-by-step explanation:

3

x

2

+

4

x

+

19

−

f

(

x

)

=

0

3 0
1 year ago
Let f(x)=3x^3-5x^2-8k-1, where k is a constant. When f(x) is divided by x-k, the quotient is g(x) and the remainder is 3k+2. Fin
Irina18 [472]
I think its like this. 

6 0
3 years ago
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