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2 years ago

7.

Mathematics

1 answer:

Anuta_ua [19.1K]2 years ago

4 0

Answer:

A. y ≥ 2x – 2

Step-by-step explanation:

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Help pls, do and workout number 5

Vlada [557]

322/14 = 23

322 / 14

14 cannot go into 3, so 14 can go into 32 twice,

32-28 = 4 drop the 2

42. 14 can go into 42 3 times

42-42 = 0

Your answer is 23

8 0

2 years ago

How much water should we add to 20 kg of seawater to change its concentration from 3% to 2%?

zhannawk [14.2K]

Answer:

10 kg

Step-by-step explanation:

In 3% concentration of 20 kg of seawater, there will be $\frac{20 \times 3}{100} = 0.6$ kg of salt.

So, if it is a 2% solution of seawater,

Then 2 kg salt will be there in 100 kg solution.

So, 0.6 kg salt will be there in $\frac{100 \times 0.6}{2}= 30$ kg of solution.

So, to make a solution from 3% to 2% we have to add (30 - 20) = 10 kg of water with a 20 kg solution. (Answer)

6 0

2 years ago

Karina ate 1/2 of the muffins. Ulysses ate 1/4 of the muffins. Zawanna ate 1/5 of the muffins. Juan ate the rest of the muffins.

erastovalidia [21]

Answer:

1/20

Step-by-step explanation:

Karina ate 1/2 of the muffins. Ulysses ate 1/4 of the muffins. Zawanna ate 1/5 of the muffins. Juan ate the rest of the muffins. What fraction of the muffins did Juan eat?

Let the total number of muffins = 1

Hence:

The fraction of muffins Juan ate =

1 - (1/2 + 1/4 + 1/5)

Lowest common denominator is 20

1 - ( 10 + 5 + 4/20)

1 - 19/20

= 1/20

The Fraction of muffins Juan ate is 1/20

4 0

2 years ago

What is for number two help

miv72 [106K]

Step 1- turn mixed number into improper fraction.

step 2- multiply 3/2 by 3/1

step 3- turn improper fraction into mixed number

And your done! :)

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2 years ago

Of the 168 hours in a week, as a full time student, you should spend how many hours per week on school work?

bonufazy [111]

I like to use 8 hours of school a day so thats 21 a week but all people are different so at most 36 hours a week

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2 years ago