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frosja888 [35]
2 years ago
13

9. If y = 30 when x = 7, find x when y = 12.​

Mathematics
1 answer:
Marianna [84]2 years ago
6 0
I have my work at the bottom but to explain you have to divide 30/12, and I got 2.5. That means 30 is 2.5 times bigger than 12. Because we have to find x, we have to divide 7/2.5, to find what is 2.5 times smaller than 7. That’s 2.8. So, x= 2.8

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If 1/2 a number is 5 more than 1/7 of that number, what is the number?​
Burka [1]

Answer:

14

Step-by-step explanation:

1/2x = 1/7x + 5

1/2x - 1/7x = 5

7/14x - 2/14x = 5

5/14x = 5

x = 5 * 14/5

x = 14

4 0
2 years ago
The sum of a number y and 6.2 is at least -4.7<br> inequality:
xeze [42]

We are required to write an inequality for the expression and also solve it

The number y is at least 10.9

let

the unknown number = y

The sum of a number y and 6.2 = y + 6.2

y + 6.2 ≤ -4.7

y ≤ -4.7 - 6.2

y ≤ 10.9

Therefore,

The expression is represented by the inequality y + 6.2 ≤ -4.7 and y ≤ 10.9

Read more:

brainly.com/question/15816805

7 0
3 years ago
Please need help asap! could you give me the equation to fill in the blanks and not the total
Gennadij [26K]

Answer:

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Step-by-step explanation:

7 0
3 years ago
Find 3 consecutive numbers where the product of the smaller two numbers is 19 less than the square of the largest number.
Reika [66]
N; n+1; n+2 - 3 consecutive numbers

n(n + 1) = (n + 2)² - 19    |use a(b + c) = ab + ac and (a + b)² = a² + 2ab + b²

n² + n = n² + 4n + 4 - 19    |subtract n² from both sides

n = 4n - 15    |subtract 4n from both sides

-3n = -15    |divide both sides by (-3)

n = 5

n + 1 = 5 + 1 = 6

n + 2 = 5 + 2 = 7

Answer: 5; 6; 7.
6 0
3 years ago
I need help finding the answer​
sesenic [268]

Answer:

<em><u>- 2  \leqslant  \times  \leqslant 2</u></em>

3 0
3 years ago
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