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AlexFokin [52]
3 years ago
12

Solve 2/x+12/x=7 A. 2 B.-2 C. 28 D.-28

Mathematics
1 answer:
Juliette [100K]3 years ago
3 0

\frac{2}{x}+\frac{12}{x}=7\\\frac{2+12}{x}=7\\\frac{14}{x}=7\\14=7x\\\frac{14}{7}=x\\x=\frac{14}{7}\\x=2

The answer is A. 2

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Decide whether the function is an exponential growth or exponential decay function, and find the constant percentage rate of gro
Rasek [7]

Answer:

Exponential decay function; -0.94%

Step-by-step explanation:

We are given an exponential function and we are supposed to find whether the given function increases or decreases and also the percentage of increase or decrease.

Th given function is f(x) = 2060\times (0.9906)^{x}

Here x denotes the number of years.

At the start the value was 2060. In the next year it was multiplied by 0.9906.

This means that the value becomes 0.9906 times after each year.

Hence the value decreases by 0.0094 times its original value.

Converting to percentage it becomes 0.94% decrease after each year.

7 0
3 years ago
Answer Three of these question and you will be the brainliest. Answer this with solution please
Mamont248 [21]
1. ALL
2. 10,3,-1,-5,-11
3.-1/2, -2/3, 7/12, 0.82
6 0
4 years ago
Read 2 more answers
78x − 12 = 316x + 5 what is the answer pls help
Romashka-Z-Leto [24]

Answer:

-0.0714 approx

Step-by-step explanation:

78x − 12 = 316x + 5

Bring all the like terms together

78x -316x = 5 + 12

-238x = 17

∴ x = 17 ÷ -238 = -0.0714 (rounded up to 3 significant figures)

8 0
3 years ago
Jamari is 5 times as old as his daughter the difference between their ages is 36 years how old is each person
Montano1993 [528]
Let x represent his daughter age
Then the expression: 5x - x = 36
Solve for x: 4x = 36
Then x = 36/4 = 8

The daughter is 8 years old
Jamari is 40 years old
7 0
4 years ago
Simplify. 6^2+15<br><br> A. 21<br> B. 27<br> C. 46<br> D. 51
sweet-ann [11.9K]

<u><em>Answer:</em></u>

<u><em>D. 51</em></u>

Explanation:

This question's it's about the order of operations. P-parenthesis, E-exponents, M-multiply, D-divide, A-add, and S-subtract. It can also go left to right.

First, do exponents.

6^2=6*6=36

Then add left to right.

36+15=51

\boxed{=51}

Hope this helps!

Thanks!

Have a great day!

5 0
3 years ago
Read 2 more answers
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