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34kurt
3 years ago
7

2

alt=" 3^(x+7) = 9^(x-1)" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
DaniilM [7]3 years ago
4 0
3(x + 7) = 9(x - 1)
3(x) + 3(7) = 9(x) - 9(1)
  3x + 21 = 9x - 9
<u>- 3x          - 3x     </u>
          21 = 3x - 9
        <u>+ 9         + 9</u>
         <u>30</u> = <u>3x</u>
          3      3
         10 = x
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PLEASE HELP I NEED ASAP WILL GIVE BRAINLIEST + 30 POINTS<br><br> 8/5 divided by 3 in fractions
Alexeev081 [22]

Answer: \frac{8}{15}

Step-by-step explanation:

Let's re-write 3 as a fraction: \frac{1}{3}

Now all we have to do is multiply the numerator by the reciprocal of the denominator.

\frac{8}{5} * \frac{1}{3}

\frac{8}{5 *3}

\frac{8}{15}

Your answer is: \frac{8}{15}

I hope this helps!

4 0
3 years ago
Read 2 more answers
The temperature outside changed from 76°F to 46°F over a period of five days. If the temperature changed by the same amount each
JulijaS [17]

。☆✼★ ━━━━━━━━━━━━━━━  ☾

Work out the total change:

76 - 46 = 30

Divide this by the number of days:

30/5 = 6

As the temperature decreased, it would have a minus value in front of it

Thus, the answer is option B

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8 0
3 years ago
Nolan Walker decided to buy a used snowmobile since his credit union was offering such low interest rates. He borrowed $2,700 at
Lapatulllka [165]

He pays in interest of $111.0375. Interest is calculated in the two ways, by compounding or by simple interest.

<h3>How to calculate simple interest amount?</h3>

If the initial amount (also called as principal amount) is P, and the interest rate is R % annually, and it is left for T years for that simple interest, then the interest amount earned is given by:

I = \dfrac{P \times R \times T}{100}

The given data in the problem is;

The principal is,P=$2700

The rate of interest = 3.5%

The total time interval is,T

The total time interval is;

\rm T= 5+365+31+21\ days

The simple interest is found as;

\rm SI = P \times R \times T \\\\ \rm SI = 2700 \times 0.0035 \times 1.172222 \\\\ SI=111.0375

Hence, he pays in interest of $111.0375.

To learn more about simple interest, refer to the link;

brainly.com/question/5319581

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8 0
2 years ago
I need help
blondinia [14]

Answer:

b- 13 weeks

Step-by-step explanation:

She makes $550 a week but spends $200 on merchandise so her total weekly is technically $350 in order to earn profit she has to get more than $4500

divide $4500 by $350 which you will get 12.6 but you round it to 13 meaning it would take her a maximum of 13 weeks to receive profit

3 0
3 years ago
In its first year of business, Arlo’s Dry Cleaners had a closing balance of –$1,500. The second year it lost an additional $1,20
Alex

Answer:

-2700 dollars

Step-by-step explanation:

The first year we have a loss of 1500 dollars. On the balance sheet we write -1500, with the negative indicating loss. Some accounting practices will use parenthesis to mean loss, so you might see it as (1500). But in this problem, we'll use negative signs for loss.

The second year is loss of 1200. Add up the two losses (the positive versions of each) to get 1500+1200 = 2700. Then make the result negative. Taking one loss and adding more loss to it means your loss has gotten bigger. So that's why the closing balance at the end of year 2 is -2700 dollars, which is a loss of 2700 dollars.

4 0
3 years ago
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