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4 years ago

Multiply (-2/3) (5/4) Quick help!

Mathematics

1 answer:

ki77a [65]4 years ago

8 0

Answer: $-\frac{5}{6}$

Step-by-step explanation:

When you multiply fractions, you multiply straight across and simplify.

$-\frac{2}{3}*\frac{5}{4}$ [multiply]

$-\frac{10}{12}$ [simplify]

$-\frac{5}{6}$

Now, we know that the product is $-\frac{5}{6}$ .

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What is the gear ratio between gear 1 and gear 2 if gear 1 has 5 teeth and gear 2 has 55 teeth?

coldgirl [10]

Answer:

1 : 11

Step-by-step explanation:

Ratio

gear 1 : gear 2

= 5 : 55 ( divide each part of the ratio by 5 )

= 1 : 11 ← in simplest form

4 0

3 years ago

What is 9 1/5-3 2/3

ella [17]

the notebook

$9 \frac{1}{5} - 3 \frac{2}{3} = \\ \\ 9 \frac{3}{15} -3 \frac{10}{15} = \\ \\ 8 \frac{18}{15} - 3 \frac{10}{15} = \\ \\ 5 \frac{8}{15}$
explanation

We have a mixed operation with numbers . Each number is a whole and fractions . Then we subtract the total from the whole and fractions of fractions

$9 \frac{1}{5}$ the number of mixed
9 integer
 $\frac{1}{5}$ fraction

$9 \frac{1}{5} - 3 \frac{2}{3} = \\ \\ 3 + 6 \frac{1}{5} - 3 - \frac{2}{3} = \\ \\ 6 \frac{1}{5} - \frac{2}{3} =$

by subtracting fractions must have the same value in the denominator .

$6 \frac{1*3}{5*3} - \frac{2*5}{3*5} = \\ \\ 6 \frac{3}{15} - \frac{10}{15} =$

3/15 < 10/15 We have to take the total 1 to subtract it was possible

$5 + 1 \frac{3}{15} - \frac{10}{15} = \\ \\ 5 + \frac{15}{15} + \frac{3}{15} - \frac{10}{15} = \\ \\ 5 \frac{18}{15} - \frac{10}{15} = 5 \frac{8}{15}$

8 0

4 years ago

The ratio of boys to girls in a group is 2:1. If there are 18 more boys than girls, work out how many girls there are.

rusak2 [61]

Hey there! I’m happy to help!

Let’s use the variable g to represent the girls. This ratio shows that there are twice as many boys as girls (boys=2g)We also see that there are 18 more boys that girls. Let’s set up an equation

g+18=2g
We subtract 18 from both sides
g=2g-18
We subtract 2g from both sides.
-g=-18
We divide both sides by -1
g=18

Therefore, there are eighteen girls.

I hope that this helps! Have a wonderful day!

4 0

3 years ago

Part A A Select the number that is greater 15x15x15 or 13x13x13 Help!

77julia77 [94]

Answer:

15x15x15

Step-by-step explanation:

13x13x13= 2197

15x15x15= 3375

6 0

3 years ago

What is the Length of the side LM?

jok3333 [9.3K]

Answer: 12

Step-by-step explanation:

5 0

2 years ago