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3 years ago

Is there a easy way to subtract fractions with unlike deiomaters

Mathematics

1 answer:

Angelina_Jolie [31]3 years ago

8 0

Answer:

Yes

Step-by-step explanation:

It's just like adding fractions where you have to find the common denominator so the fractions can be subtracted.

Example

$\displaystyle \frac{1}{2}-\frac{1}{3}=\frac{1*3}{2*3}-\frac{2*1}{2*3}=\frac{3}{6}-\frac{2}{6}=\frac{1}{6}$

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You make punch for a party. The ratio og ginger ale to fruit juice is 8 cups to 3 cups. You decide to add 4 more cups of ginger

Dvinal [7]

To get the answer we can use proportion
8 ginger ----------------- 3 fruit
12 ginger ----------------x
Crossmultiply now
8x=12*3 /:8
x= $\frac{12*3}{8}$
x= $\frac{36}{8} \\ x=4.5$
To not change ratio we have to have 4.5 cups of fruilt juice. We initialy had 3, so we have to add 1.5 cup of fruit juice.

7 0

4 years ago

a class needs a total of $500 for a filed trip. They already have $285. They are selling jars of peanuts to make the rest of the

ivanzaharov [21]

Answer:

215=6n or 500=6n-285

Answer: 36 bags

Step-by-step explanation:

the first one with 215, the 215 is 500-285

same with the other one

Answer:

First to find the answer, i will use the first equation.

Divide both sides by 6:

215/6= 35.833333333........

35.83333333........=n

since we cant have .33333333 boxes we have to round up to 36 so t is even

i hope this helps u pls give a brainliest and a thx ;)

4 0

4 years ago

Q4) Identify which of the following are geometric sequences and which are

Reptile [31]

Answer:

(i) and (ii)

Step-by-step explanation:

For a sequence to be geometric then the ratio r between consecutive terms must be common.

(1)

2, 6, 18, 54

6 ÷ 2 = 3

18 ÷ 6 = 3

54 ÷ 18 = 3

Here there is a common ratio r = 3 , then sequence is geometric

(ii)

25, 5, 1

$\frac{5}{25}$ = $\frac{1}{5}$ and $\frac{a_{3} }{a_{2} }$ = $\frac{1}{5}$

There is a common ratio r = $\frac{1}{5}$ , then sequence is geometric

(iii)

1, 4, 9, 16

4 ÷ 1 = 4

9 ÷ 4 = 2.25

16 ÷ 9 = 1.777..

There is no common ratio, then sequence is not geometric

4 0

3 years ago

-0.2×-5/7 please can i have some help

Ksivusya [100]

Answer:

+1/7

Step-by-step explanation:

One approach to evaluating this would be to rewrite it as:

-2 -5

------ * --------- .

10 7 This reduces to:

--------- = +1/7

2(7)

8 0

4 years ago

If Sally made an 84% on her math test that had 25 questions, how many questions out of the 25 did Sally answer correctly?

kvasek [131]

Answer:

Step-by-step explanation:

We require to calculate 84% of 25

84% = $\frac{84}{100}$ = 0.84

multiply 25 by 0.84 for result

0.84 × 25 = 21

7 0

3 years ago

Read 2 more answers