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xxTIMURxx [149]
3 years ago
5

Please help. I’ll mark you as brainliest if correct!

Mathematics
1 answer:
mezya [45]3 years ago
4 0

Answer:

x = -1

Step-by-step explanation:

2x - 7 = 9x

Subtract 2x from both sides: -7 = 7x

Divide both sides by 7: -1 = x

Now plug in 7 for every value of x in the original equation to make sure you are correct:

2(-1) - 7 = 9(-1)

-2 - 7 = -9

-9 = -9

I hope this helps!

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It's from the chapter : "exponents and powers"<br>i need the workings too<br>please help​
labwork [276]

Answer:

505/19

Step-by-step explanation:

Easy

so [3^3-(1/2)^(-3)*(1/19)]

simplify

3^3-8/19

3^3=27

27-8/19

convert element to fraction

(27*19)/19-8/19

combine

(27*19-8)/19

505/19

Have a wonderful day ask me if you have more questions about MATH that goes for anyone who needs math help

5 0
3 years ago
What is the slope of the line given by the equation y=4x?
umka2103 [35]

Answer:

the slope is 1 over 4, or up 1 right 4.

Step-by-step explanation:

4 0
3 years ago
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timofeeve [1]
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7 0
3 years ago
What is the place value of 1 in 209.631?
QveST [7]
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7 0
4 years ago
Read 2 more answers
Nelson decides to invest $1,000,000 in a period annuity that earns 4.8% APR
Lyrx [107]

Answer:

<h2> 21years</h2>

Step-by-step explanation:

Amount invested by Nelson = $1,000,000

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simple Interest = $1,000,000 * 4.8 *(1/12)/100

simple Interest = $1,000,000 * 4.8/1200

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Simple interest for one year = $4,000*12 = $48,000

In order to determine the number of years it will take Nelson to earn back his initial investment, we will divide its initial investment by the interest earned on the investment yearly as shown;

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Amount of years = 20.8years ≈ 21years

6 0
3 years ago
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