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Tpy6a [65]
2 years ago
5

What is r in this equation? 3 3/4 + r = 5 3/8

Mathematics
2 answers:
gayaneshka [121]2 years ago
8 0

Answer:

r is 1 5/8

Step-by-step explanation:

3 3/4 is the same as 3 6/8, now both denominators are the same.

5 3/8 - 3 6/8 is the same as 43/8-30/8 which is 13/8, or in mixed number form, 1 5/8.

So r=1 5/8

Semmy [17]2 years ago
3 0

5 3/8 - 3 3/4= 1 5/8

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7. Jennifer is 6 years older than Sue. In 4 years, she will be twice as old as Sue was 5 years ago. Find their ages
makvit [3.9K]

Answer: Sue is 20 and Jennifer is 26

Step-by-step explanation:

Let's say that J=Jennifer's age now and S=Sue's age now.

We know that:

J=S+6

Because Jennifer is 6 years older than Sue.

We also know that when Jennifer is 4 years older (J+4), she will be twice as old as Sue was 5 years from now (S-5).

So we get the following equation from that information:

J+4=2(S-5)

So we have the two equations:

J+4=2(S-5)

J=S+6

Let's substitute J=S+6 into the first equation (note that RHS means Right Hand Sie and LHS means Left Hand Side):

(S+6)+4=2(S-5)

S+10=2S-10 [Add 6+4 on the RHS, and distribute on the LHS]

S=2S-20 [Subtract 10 from both sides]

-S=-20 [Subtract 2S from both sides]

S=20 [Divide both sides by -1]

So we know S, which is Sue's age, is 20. So Sue is no 20 years old.

Finding Jennifer's age now is simple. We know Jennifer is 6 years older than Sue, and Sue is 20, so Jennifer is 26 years old.

4 0
2 years ago
The length of a tiger is 45in the head is 10in. What equation can find the length of the rest of the body?
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Answer:

45in - 10in = 35in

Step-by-step explanation:

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3 years ago
Solve by elimination method : x - y = 2 , x + y = 12.
aalyn [17]
Answer: (7,5) X=7 and Y=5

Explanation:

Add the two equations together to eliminate y from the system.

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Divide both sides by 2

x=7

Substitute the value found for x into one of the original equations to solve for y

(7)-y=2

Move all terms to one side to make it easier

-y=2-7

Subtract

y=5


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