3 years ago

Question 1 0 10

Mathematics

1 answer:

Illusion [34]3 years ago

8 0

Answer:

Step-by-step explanation:

You might be interested in

The first barn contained 3 times more hay than the second one. After 20 tons of hay were removed from the first barn and 20 tons

Vika [28.1K]

The solution would be like this for this specific problem:

a + 20 = 5/7 (3a - 20) 
a + 20 = (15a - 100)/7 
Multiply both side by 7, 
7a + 140 = 15a - 100 
8a = 240
a = 30

3a = 90

a + 20 = 50

3a - 20 = 70

5/7 x 70 = 50

8 0

4 years ago

Read 2 more answers

The price of a cup coffee was 2.40 yesterday. Today, the price fell to 2.15 find the percentage decrease. Round the answer to th

irakobra [83]

ANSWER

The percentage decrease is 10.4%.

EXPLANATION

To calculate percentage decrease, use the formula,

Percentage decrease

$= \frac{new \: price - old \: price}{old \: price} \times 100\%$

Yesterday the price of coffee was 2.40. This is the old price.

Today the price is 2.15. This is the new price.

$= \frac{2.15 - 2.40}{2.40} \times 100\%$

$= \frac{ - 0.25}{2.40} \times 100\%$

$= - 0. 10416667 \times 100\%$

$= - 10.416667\%$

To the nearest tenth, we have:

$- 10.4\%$

Therefore the percentage decrease is 10.4%.

8 0

3 years ago

Determine the total cost or selling price to the nearest cent $20 haircut; 15% tip

klio [65]

Answer:

Haircut : $20

Tip (15%) : $3

=> $20+$3= $23

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

40. Construct Arguments Marcia and

grandymaker [24]

Answer:

David got it correctly

Step-by-step explanation:

5.6 x 10=56 not 0.56

7.21 X 100= 721 not 0.721

3 0

4 years ago

On a number line, what is the distance between -54 and 73?

AlladinOne [14]

The answer is d because when you go from positive to negative you add the positive number to get to zero and than add the number you are getting to make sense?

4 0

3 years ago

Read 2 more answers