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gladu [14]
3 years ago
15

What is x if 6x-7=13x+8

Mathematics
1 answer:
skad [1K]3 years ago
8 0

Answer:

6x-7=13x+8

6x-13x=8+7

-7x=15

x=-15/7

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A tree 7 ft tall grows an average of 6 in. each year. Which equation models the treeÍs height h after x years
Alexeev081 [22]
"h = 6x + 7" is the one equation among the following choices given in the question that <span>models the tree's height h after x years. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that has actually come to your desired help.</span>
7 0
4 years ago
Frank is a time share broker
Stella [2.4K]
3% up to 10,000 
5% over 10,000

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6 0
4 years ago
If n and k are positive integers, is n divisible by 6 ? (1) n = k(k + 1)(k – 1) (2) k – 1 is a multiple of 3.
xz_007 [3.2K]

Answer: yes, it is

Step-by-step explanation:

A number is divisible by 6 if it is divisible by 2 and 3 simultaniously.

n = k(k+1)(k-1)

If k-1 is a multiple of 3, n is divisible by 3, so one of the requirements is ok.

Now, if k-1 is a multiple of 3, it can be even or odd.

if k-1 is even, then it is divisible by 2 and as it is divisible by 3 as well, n is divisible by 6

if k-1 is odd, then k and k+1 is even, hence, divisible by 2.

As n = k(k+1)(k-1), n is also divisible by 6.

4 0
4 years ago
Simplify please help me<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20-%204%7D%7Bx%20%2B%206%7D%20%20-%20%20%5Cfrac%7Bx%
erastova [34]

Answer:

\frac{20}{x^2 + 10x+24}

Step-by-step explanation:

common denominators : (x+6)(x+4)

numerators become difference of squares

x^2 -16   and   x^2-36  

x^2 -16   -   x^2-36   = 20

(x+6)(x+4) = {x^2 + 10x+24}

4 0
3 years ago
Read 2 more answers
3 times a number x, subtracted from 18 is less than -90
Shalnov [3]

Answer:

x > -24

Step-by-step explanation:

18 - 3x < 90

Subtract 18 from both sides.

-3x < 72

Divide both sides by -3. (When diving by a negative, flip the sign.)

x > -24

5 0
4 years ago
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