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natima [27]
4 years ago
5

Which number can replace the variable to make these fractions equivalent?blank/7, 54/42

Mathematics
1 answer:
taurus [48]4 years ago
4 0
Equivalent fractions can be found by multiplying numerator and denominator by the same number.

for example : 2/5 * 3/3 = 6/15......2/5 and 6/15 are equivalent. Just like 2/5 * 4/4 = 8/20......2/5 and 8/20 are equivalent...so basically, if u multiply the numerator by a certain number, and the denominator by that same number, u will get an equivalent fraction.

Now to ur problem...
   x             54
------    =   -----
   7             42

now look at ur denominators....7 x what = 42 ? 7 x 6 = 42...so u have multiplied the denominator by 6....so u would have to multiply the numerator by 6.....or divide by 6....54/6 = 9.....or 9 x 6 = 54. So that missing value is 9.

9/7 = 54/42

check..
9/7 * 6/6 = 54/42 (equivalent)

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what is the value of c when the value of the expression 2(3–5c) is 1 less than the value of the expression 4(1–c)?
Gre4nikov [31]

The answer in fraction form is c = 1/2

The answer in decimal form is c = 0.5

=============================

Explanation:

Saying "A is 1 less than B" means A = B-1. So whatever B is, subtract 1 from it and you get the value of A.

Replace A with the expression 2(3-5c). Replace B with 4(1-c)

We go from this

A = B - 1

to this

2(3-5c) = 4(1-c) - 1

----------

Let's isolate c

2(3-5c) = 4(1-c) - 1

2(3)+2(-5c) = 4(1)+4(-c) - 1

6-10c = 4 - 4c - 1

6-10c = 3 - 4c

6-3 = -4c+10c

3 = 6c

6c = 3

c = 3/6

c = 1/2

c = 0.5

8 0
4 years ago
How to solve this problem in the picture above
IRISSAK [1]

Answer:

g=4

Step-by-step explanation:

If you're solving for g, you need to get it alone on one side. The way I did so was to subtract 7 from each side.

15 = 2g + 7

-7            -7

If you do that, the 7 on the right cancels out and you're left with 8 = 2g. To get the g alone, you divide it by it's base on both sides which in this case is 2.

8/2 = 2g/2

That will cancel the 2 out and will leave you with g on the right side and on the left side would be 4 because simple division (8/2=4)

Your final answer should be g = 4

4 0
3 years ago
6(8-3)+3(7-4) evaluat the expression
Ksju [112]

Answer: 39


Step-by-step explanation:

6(8-3)+3(7-4)  1. Make sure to multiply what's in the parentheses first.

6(5)+3(3) 2. Multiply before you add the coefficients

30+9 3. Add

Answer is 39


7 0
3 years ago
Read 2 more answers
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trasher [3.6K]

WHat is there to graph you didnt clip anything

3 0
4 years ago
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natta225 [31]

Answer:

3360

Step-by-step explanation:

(77x80)-(175+600+2025)

6 0
3 years ago
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