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Marysya12 [62]
3 years ago
12

Which of these is the algebraic expression for "5 times the sum of 2 and y?" 052+ y O2 +5. O2(5 + y) O 5(2 + y)​

Mathematics
1 answer:
AlekseyPX3 years ago
8 0

Answer:

5(2 + y)

Step-by-step explanation:

The sum of 2 and y is 2 + y and 5 times this sum is

5(2 + y)

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Solve the system of equations by the substitution method. x+4y=6 y=3−x
Fiesta28 [93]

Answer:

x = 2, y = 1

Step-by-step explanation:

x + 4y = 6 and y = 3 - x have to be rearranged: x + 4y = 6 and x + y = 3

You subtract the equations to eliminate one of the variables (x) so that the other can be found

3 0
2 years ago
What is 451 rounded to the nearest hundred?
USPshnik [31]

Answer:

500

Step-by-step explanation:

If the tens digit is 50 or above then you round up to the next hundred but if it is 49 or below you round down to the nearest hundred

3 0
2 years ago
Read 2 more answers
The length of a paper clip chain is directly proportional to the number of paper clips. If a chain with 65 paper clips has a len
Ghella [55]

<u>Answer:</u>

The length of a paper clip chain is directly proportional to the number of paper clips. If a chain with 65 paper clips has a length of 97.5 inches then the length of chain with 14 paper clips is 21 inches.

<u>Solution:</u>

Given that the length of a paper clip chain is directly proportional to the number of paper clips. Directly propotional means when the length of paper clip increases, then the number of paper clips also increases in same ratio.

Hence, by above definition, we get  

\frac{l_{1}}{l_{2}} = \frac{n_{1}}{n_{2}}  ------- eqn 1

From question, for a chain with 65 paper clips has a length of 97.5 inches, we get  

l_{1} = 97.5 \text { and } n_{1} = 65

Similarly, for a chain with 14 paper clips with length to be found, we get  

n_{2}=14 \text { and } l_{2} = ?

Now by using eqn 1, we can calculate the length of 14 paper clips  is,

\frac{97.5}{65}=\frac{l_{2}}{14}

Rearranging the terms we get,

l_{2 }= \frac{97.5 \times 14}{65}

l_{2}=21 \text { inches }

Hence the length of chain with 14 paper clips is 21 inches.

3 0
3 years ago
NEED HELP FAST
juin [17]

Answer:

-24 2/7

Step-by-step explanation:

-180 4/7 -166 2/7

-180 -166 = -24

4/7-2/7 = 2/7

-24 2/7

3 0
3 years ago
If f(x) = 3x - 5, than f(2) =
Mamont248 [21]
If we substitute 2 into x it'll be:

3x - 5 \\ 3(2) - 5 \\ 6 - 5 \\ 1

5 0
2 years ago
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