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mel-nik [20]
3 years ago
11

Two lines, R and M, are represented by the following equations:

Mathematics
1 answer:
Katena32 [7]3 years ago
8 0
If you would like to know what is true about the solution of the set of equations, you can calculate this using the following steps:

2x + 2y = 18
x + y = 9    /*2
______________

<span>2x + 2y = 18
</span>2x + 2y = 18
______________
2x + 2y = <span>2x + 2y
</span>18 = 18
0 = 0

The correct result would be infinitely many solutions.
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Which of the following fractions are equivalent to 15/21? Select all that apply.
scoundrel [369]

Answer:

A. 5/7
B. 30/42

Step-by-step explanation:

I just used an equivalent fractions calculator.
Please correct me if I'm wrong :)

3 0
2 years ago
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What is the additive inverse of (-2m)?
ad-work [718]

Answer:

-12

Step-by-step explanation:

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2 years ago
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Eli has saved $8 more than 1/3 of Angela's savings.If they each save $10 more Eli will have saved &amp;4 more than Angela's savi
statuscvo [17]

Answer:

Eli has saved $10

Step-by-step explanation:

Let us use the first letters of their names to represent them.

A for Angela and E for ELi

So, from the first statement, we can write out an equation: E = \frac{1}{3}A + 8, that is, <em>one-third of Angela's savings + $8 will give us Eli's savings</em>

From the second statement, we can write out: E + 10 = (A + 10) + 4 which means that <em>if $10 is added to both their savings, Eli will still have $4 more than Angela.</em>

So, we can solve both equations;

Equation 1: E = \frac{1}{3}A + 8

Equation 2: E + 10 = (A + 10) + 4; which can be rewritten as E + 10 = A + 14

and then E = A + 4

The two equations (in bold), can then be solved simultaneously.

Let us carry out this operation to <u>eliminate the E:</u> Subtract equation 1 from equation 2, so that;

A + 4 - ( \frac{1}{3}A + 8) = E - E

\frac{2}{3}A - 4 = 0

\frac{2}{3}A = 4

A = 4 × \frac{3}{2} = 6

So, if A is 6, and E = A + 4 (from equation 2, that means that E = 6 + 4 = 10

So, Eli has saved $10, while Angela has saved $6.

If we check what was said in the question about their savings, which is what we have represented using the equations, the answers can be confirmed.

3 0
3 years ago
Read 2 more answers
1) 3+5+8° +10+6<br> I<br> i need help
diamong [38]

Answer:

36°

Step-by-step explanation:

3+5+8°+10+6= 36°

<em>Hope</em><em> </em><em>this</em><em> </em><em>helps</em><em> </em>

5 0
2 years ago
Simplify the Expression: 3(x - y + 5)
sveta [45]

Answer:

3x - 3y + 15

Step-by-step explanation:

Multiply everything inside the parenthesis by the outside number.

3 times X gives us 3x

3 times -Y gives us -3y

3 times 5 gives us 15

6 0
2 years ago
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