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elena-14-01-66 [18.8K]
3 years ago
15

How are 4:5 and 8:10 equivalent

Mathematics
2 answers:
tia_tia [17]3 years ago
8 0

Step-by-step explanation:

Ok we can start like this

you see  10 divided by 5 = 2

so 2/10 would = 1/5

because it takes 5 twos in order to be 10 and it takes 5 ones in order to be 5

so 2 4 6 8. you see 8 is the fourth even number and it would = up  to 4/5 in this situation

so 8/10 = 4/5

Happy to help :)

oh yeah can i get brainliest please

Paraphin [41]3 years ago
4 0

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

They are equivalent because if you take the 8 and divide it by the 4 you'll get 2. Then if you take the 10 and divide it by the 5 you'll get 2 again.

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nexus9112 [7]

Answer:

She would use the mean.

Step-by-step explanation:

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4 years ago
How to simplify -2 1/4 - 2/3 (-2+1/5)
lesya [120]

Answer:

(-21)/20

Step-by-step explanation:

Simplify the following:

-(2 + 1/4) - 2/3 (1/5 - 2)

Put 2 + 1/4 over the common denominator 4. 2 + 1/4 = (4×2)/4 + 1/4:

-(4×2)/4 + 1/4 - 2/3 (1/5 - 2)

4×2 = 8:

-(8/4 + 1/4) - 2/3 (1/5 - 2)

8/4 + 1/4 = (8 + 1)/4:

-(8 + 1)/4 - 2/3 (1/5 - 2)

8 + 1 = 9:

-9/4 - 2/3 (1/5 - 2)

Put -2 + 1/5 over the common denominator 5. -2 + 1/5 = (5 (-2))/5 + 1/5:

-9/4 - 2/3 1/5 + (5 (-2))/5

5 (-2) = -10:

-9/4 - 2/3 ((-10)/5 + 1/5)

-10/5 + 1/5 = (-10 + 1)/5:

-9/4 - 2/3 (1 - 10)/5

-10 + 1 = -9:

-9/4 - 2/3×(-9)/5

-2 (-9) = 18:

(-9)/4 + 18/(3×5)

3×5 = 15:

(-9)/4 + 18/15

The gcd of 18 and 15 is 3, so 18/15 = (3×6)/(3×5) = 3/3×6/5 = 6/5:

(-9)/4 + 6/5

Put (-9)/4 + 6/5 over the common denominator 20. (-9)/4 + 6/5 = (5 (-9))/20 + (4×6)/20:

(5 (-9))/20 + (4×6)/20

5 (-9) = -45:

(-45)/20 + (4×6)/20

4×6 = 24:

(-45)/20 + 24/20

-45/20 + 24/20 = (-45 + 24)/20:

(-45 + 24)/20

-45 + 24 = -21:

Answer: (-21)/20

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What is t multiplied by -4 is at least -2/5
Oduvanchick [21]
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