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mariarad [96]
3 years ago
5

I really need help on this!

Mathematics
1 answer:
Arisa [49]3 years ago
6 0
(-6/5, -8/5), you substitute 3x+2 for the y in the first equation. So the first equation will read 2x+3x+2, then you solve and get x= -6/5. Then you have to solve for y, so you put your x value (-6/5) in the second equation for x. it should read y= 3(-6/5)+2, the answer to that is y= -8/5. After that you just put them in order (x,y) and there's your answer. 
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If  the three angles  of  a quadrilateral are 120,  130, 10 then the fourth angle is​
Aloiza [94]

Answer:

100

Step-by-step explanation:

120 + 130 + 10 = 260

360 - 260 = 100

4 0
2 years ago
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NEED HELP FAST!!! Find the percent of increase from 260 to 430. Round to the nearest tenth of a percent if necessary.
a_sh-v [17]

You started out with 260, and increased to 430.
The amount you increased was (430 - 260) = 170

170 is  (170/260) = <em>65.4%</em> of what you started with.

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

Another way:

The new amount is  (430/260) of the old amount.

 430 / 260 = 1.654 = 165.4%

The original amount was  260.
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5 0
3 years ago
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kolezko [41]
Formula
l×w×h=volume
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3 0
3 years ago
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PLEASE HELPPPP!!!!<br><br><br><br> If RS = 13 and ST = 8, find RT.
jarptica [38.1K]

Answer:

the answer is 21

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What is the area, in square inches, of the rectangle? Show your work!!
erma4kov [3.2K]

Answer:

\huge\boxed{\sf 7 \frac{13}{20} \ in. ^2}

Step-by-step explanation:

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Width of the rectangle =  \displaystyle 3 \frac{2}{5} = \frac{17}{5} \ in.

<u>Area of the rectangle:</u>

= Length × Width

\displaystyle = \frac{9}{4} \times \frac{17}{5} \\\\= \frac{9 \times 17}{4 \times 5} \\\\= \frac{153}{20} \\\\= 7 \frac{13}{20} \ in.^2\\\\\rule[225]{225}{2}

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2 years ago
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