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nata0808 [166]
3 years ago
9

Systems Of Elimination(PLZ HELP BEST ANSWER=Brainliest) x+2y=2 -x+3y=13

Mathematics
2 answers:
joja [24]3 years ago
6 0
<span>x + 2y = 2
-x + 3y = 13

As the x-terms of these equations are already opposites, you can begin to solve by elimination by adding the equations together.

</span>     x + 2y = 2
    -x + 3y = 13
+___________
     0 + 5y = 15
             y = 3

Now that you have y, substitute its value, 3, into either equation to find x.

x + 2y = 2
x + 2(3) = 2
x + 6 = 2
x = -4

Lastly, check all work by substituting both x- and y-values into both original equations.

x + 2y = 2
-4 + 2(3) = 2
-4 + 6 = 2
2 = 2

-x + 3y = 13
-(-4) + 3(3) = 13
4 + 3(3) = 13
4 + 9 = 13
13 = 13

Answer:
x = -4
y = 3

(-4, 3)
meriva3 years ago
6 0
It is systems of equations so you can use elimination to cancel out the x's. Stack the equations on top of each other and solve for Y because the X's should cancel out. Then stick the answer for Y back into the equation to find X. So the answer is Y=3 and X= -4
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8 0
3 years ago
Jessica used 2/3 yard of fabric to make a scarf. Can she make 2 of these scarves with 1 3/4 yards of fabric, and why?
Alex Ar [27]

Option 1

Jessica can make 2 scarves

yes, because the quotient of 1 \frac{3}{4} \div \frac{2}{3} \text { is } 2 \frac{5}{8}

<u>Solution:</u>

Given, Jessica used \frac{2}{3} yard of fabric to make a scarf.

We have to find can she make 2 of these scarves with 1\frac{3}{4} yards of fabric, and why?

Now, let us find number of scarves that can be made from available scarf

\text { Number of scarves }=\frac{\text { avaiable scarf }}{\text { fabric required for } 1 \text { scarf }}

\begin{array}{l}{=\frac{1 \frac{3}{4}}{\frac{2}{3}}=1 \frac{3}{4} \times \frac{3}{2}} \\\\ {=\frac{4 \times 1+3}{4} \times \frac{3}{2}} \\\\ {=\frac{16+5}{8}=2 \frac{5}{8}}\end{array}

We know that,

2 \frac{5}{8}>2 so we can make 2 scarves.

Hence, yes, we can make 2 scarves because quotient of 1 \frac{3}{4} \div \frac{2}{3} \text { is } 2 \frac{5}{8}

So 1st option is correct

3 0
3 years ago
For large parties at a seafood restaurant, a tip of 18% is automatically included on the bill. Jerome’s family went out for his
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Answer:

tip=48.28  

total cost =316.49

Step-by-step explanation:

tip = 48.28

Total + tip= 316.49

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