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zysi [14]
3 years ago
13

How do you solve 3(y-4)-7y

Mathematics
1 answer:
Nastasia [14]3 years ago
8 0

Answer:

-4y -12

Step-by-step explanation:

We cannot solve, but we can simplify

3(y-4)-7y

Distribute the 3

3y -12 -7y

Combine like terms

3y-7y -12

-4y -12

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A bag contains 36 marbles. 10 marbles are green, 6 marbles are blue, 18 marbles are yellow, and 2 marbles are purple.
alexdok [17]

Answer:

10/72 or 0.14

Step-by-step explanation:

There are 72 marbles in total and 10 of them are green. So, it is 10/72 or 1.388 rounded to the nearest hundredth is 0.14.

7 0
3 years ago
What does x equals in 2x + 16= -26
vredina [299]

Answer:

-21

Step-by-step explanation:

-21 x 2 =  -42                   -42+16= -26

7 0
3 years ago
A Chemist needs to mix a 20% acid solution with a 50% acid solution to obtain 15 liters of a 34% acid solution. How many liters
Nuetrik [128]

8 litres (amount of 20% solution needed) and 7 litres for (amount of 50% solution needed)

<u>Step-by-step explanation:</u>

Let consider ‘x’ for 20% acid solution and (15 – x) for 50% acid solution. And so, the equation would be as below,

                         20% in x + 50% in (15 – x) = 15 litres of 34%

Convert percentage values, we get

                              0.20(x) + 0.50 (15 – x) = 15 (0.34)

                              0.20 x + 7.5 – 0.50 x = 5.1

                              -0.3 x + 7.5 = 5.1

                              0.3 x = 7.5 – 5.1

                              0.3 x = 2.4

x = \frac{2.4}{0.3} = 8 litres (amount of 20 \% solution needed)

Apply ‘x = 8’ value in (15 – x) we get,

                         15 – 8 = 7 litres

The value of 7 litres for (amount of 50% solution needed)

8 0
3 years ago
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3 years ago
A specific aircraft can ascend 1,635 meters in 15 seconds.<br> What is the rate of ascent?
Snezhnost [94]

Answer:

109m/s

Step-by-step explanation:

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8 0
2 years ago
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