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Marizza181 [45]
3 years ago
12

7)) Brainliest and 10+ points!

Mathematics
2 answers:
strojnjashka [21]3 years ago
4 0
Divide by 2, then subtract 4
lara [203]3 years ago
3 0

Answer:

Divide by 2

Then subtract 4

Step-by-step explanation:

Let y = 2(x+4)

Exchange x and y

x = 2(y+4)

We want to solve for y

Divide each side by 2

x/2  = y+4

Then subtract 4 from each side

x/2 -4 =y

The inverse is x/2 -4

You might be interested in
Today, everything at a store is on sale. The store offers a 20% discount. The regular price of a shirt is $14. What is the disco
USPshnik [31]

Answer:

$11.20

Step-by-step explanation:

The regular price of the T-Shirt is $14 dollars. The discount is 20% off.

20 percent of 14:

14 * 0.2 = 2.80

You would save $2.80.

14 - 2.80 = 11.20

The discount price should be $11.20.

Hope this helps.

4 0
3 years ago
When Mohammed was born, the baby was 21 inches tall. at his last check up, he was 38 inches tall. what is the percent increase i
denis23 [38]

Answer:

80.95

Step-by-step explanation:

Percentage increase = \frac{New Value - Old Value}{Old Value} *100

=> (38-21)* 100/21 = 80.9523%

The answer round it to the nearest 100th = 80.95%

5 0
3 years ago
Anthony's Nuffin Shop recently sold 4 blackberry muffins and 6 other muffins. Considering
Mazyrski [523]

Answer:

8

Step-by-step explanation:

In total, Antony sold 10 muffins. We can do a ratio like this:

\frac{4}{10} = \frac{x}{20}

Because there are 4 blackberry muffins. We solve.

Because 10 is directly half of 20, we can just multiply 4 by 2 because if you multiply 10 by 2, you'd get 20. 4 times 2 is 8. That's the answer.

7 0
3 years ago
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $22 monthly fee
vladimir2022 [97]
Company a = 22 + 0.07m
company b = 8 + 0.12m

We are looking for the time when the prices are equal. i.e. the price of company a = the price of company b

company a = company b
22 + 0.07m = 8 + 0.12m
22 - 8 = 0.12m - 0.07m
14 = 0.05m
m = 14/0.05
m = 280

Therefore, the two companies will cost the same if you talk for 280 minutes
5 0
3 years ago
Can you answer this question ?
Elden [556K]

Answer:

k = -14

Step-by-step explanation:

We should cross-multiply

9/(k -  7)  =  6 / k

9*k  = 6 * (k - 7)

9k = 6k  - 42

9k - 6k = -42

3k = -42

k = -14

7 0
3 years ago
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