3 years ago

40=16-8r help me plzzzz

Mathematics

1 answer:

Liono4ka [1.6K]3 years ago

4 0

Answer:

r = - 3

Step-by-step explanation:

Given

40 = 16 - 8r ( subtract 16 from both sides )

24 = - 8r ( divide both sides by - 8 )

- 3 = r

You might be interested in

Mrs. Ameldo's class has 5 students with blue eyes, 7 with brown eyes, 4 with hazel eyes, and 4 with green eyes. Two students are

Vitek1552 [10]

Answer:

5/19

Step-by-step explanation:

There's no explanation, it's just common sense ‍♀️

7 0

3 years ago

Macy is making a border out of strips of wall boarder placed end to end along the 12-foot wall in her room. Each strip is foot l

slavikrds [6]

3 for each wall so the totally is 12

4 0

3 years ago

Y=-2x+1, y=-2/3x+5 solve using substitution

Bogdan [553]

6 0

3 years ago

Is 5/8 bigger or smaller than 4/6<br>is -3/2 bigger or smaller than -4/6

Mashutka [201]

$\frac{5}{8} ....\frac{4}{6} \\\\ \frac{15}{24} < \frac{16}{24} \\\\\\ -\frac{3}{2} ....-\frac{4}{6} \\\\ -\frac{9}{6} < -\frac{4}{6}$

8 0

3 years ago

Read 2 more answers

A chemist needs 130 milliliters of a 47% solution but has only 35% and 87% solutions available. Find how many milliliters of eac

choli [55]

Answer: Amount of 35% solution required = 100 milliliters

Amount of 87% solution required = 30 milliliters

Step-by-step explanation:

Given: Total solution required = 130 milliliters

Let x = Amount of 35% solution (in milliliters).

Then, Amount of 87% solution required = 130 - x

As per given,

Concentration = 0.35x +0.87(130-x)=0.47(130)

$0.35x +113.1-0.87x=61.1\\\\\Rightarrow\ -0.87x+0.35x=61.1-113.1\\\\\Rightarrow\ -0.52 x= -52\\\\\Rightarrow\ x=\dfrac{52}{0.52}=100$

Hence, Amount of 35% solution required = 100 milliliters

Amount of 87% solution required = 130-100 milliliters =30 milliliters

3 0

3 years ago