All categories

3 years ago

Help with fraction proprtions

Mathematics

1 answer:

Marina86 [1]3 years ago

7 0

The first one is 100%

You might be interested in

A packing operator can assemble 4 cardboard boxes in 5 minutes. At this rate, how many boxes can she assemble in 25 minutes?

lukranit [14]

Answer:

A. 20

Step-by-step explanation:

look at this step:

4 : 5 = X : 25

X = 4×25/5 = 100/5 = 20

5 0

3 years ago

Read 2 more answers

Which expression is equivalent to...? Screenshots attached, please help.

BaLLatris [955]

For this case we must simplify the following expression:

$\sqrt [3] {64 * a ^ 6 * b ^ 7 * c ^ 9}$

We rewrite:

$64 = 4 ^ 3\\a ^ 6 = (a ^ 2) ^ 3\\b ^ 6 * b = ((b ^ 2) ^ 3 * b)\\c ^ 9 = (c ^ 3) ^ 3$

So:

$\sqrt [3] {4 ^ 3 * (a ^ 2) ^ 3 * (b ^ 2) ^ 3 * b * (c ^ 3) ^ 3} =\\\sqrt [3] {4 * a ^ 2 * b ^ 2 * c ^ 3) ^ 3 * b} =$

By definition of properties of powers and roots we have:

$\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}$

So:

$4a ^ 2b ^ 2 c ^ 3 \sqrt [3] {b}$

Answer:

Option B

3 0

3 years ago

10(c–1)=80 i need help

Pachacha [2.7K]

Answer:

C =9

Step-by-step explanation:

10(c−1)=80

Step 1: Simplify both sides of the equation.

10(c−1)=80

(10)(c)+(10)(−1)=80(Distribute)

10c+−10=80

10c−10=80

Step 2: Add 10 to both sides.

10c−10+10=80+10

10c=90

Step 3: Divide both sides by 10.

10c

c=9

8 0

3 years ago

Subtract the rational expression

malfutka [58]

The correct answer is B

6 0

3 years ago

I'm in ISP which is In school probation. I need help! Thanks doubled the points btw

Salsk061 [2.6K]

If 310 is 30% of some number x, then

0.30x = 310

⇒ x = 310/0.30

⇒ x = 310/(3/10)

⇒ x = 310 × 10/3

⇒ x = 3100/3 ≈ 1033.33

4 0

3 years ago