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2 years ago

14

Your teacher finds a catalog that sells posters for $2 each. There is an additional charge of $4 to ship and order. Suppose that

your class paid $54 for posters.

1 answer:

mixer [17]2 years ago

8 0

This question isn’t finished. Please finish typing it out ❤️

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Solve 2x + 5y = 20; 3x - 10y = 37 by elimination. How do you do this? Thank-you!

mr Goodwill [35]

$\left\{\begin{array}{ccc}2x+5y=20&\text{multiply both sides by 2}\\3x-10y=37\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}4x+10y=40\\3x-10y=37\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad7x=77\qquad\text{divide both sides by 7}\\.\qquad\boxed{x=11}\\\\\text{Put the value of x to the first equation:}\\\\2(11)+5y=20\\\\22+5y=20\qquad\text{subtract 22 from both sides}\\\\5y=-2\qquad\text{divide both sides by 5}\\\\\boxed{y=-\dfrac{2}{5}}\\\\Answer:\ \boxed{x=11\ and\ y=-\dfrac{2}{5}}$

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2 years ago

Which of the following units are most commonly used in the United States? Check all that apply. O A. Meters O B. Ounces C. Kilog

ArbitrLikvidat [17]

Answer:

I would say D. feet

4 0

3 years ago

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The coordinates of the vertices of a polygon are shown below.

MatroZZZ [7]

Answer: Hexagon

Please hit Thanks!

Step-by-step explanation: A six-sided shape is a hexagon, a seven-sided shape a heptagon, while an octagon has eight sides… There are names for many different types of polygons, and usually the number of sides is more important than the name of the shape. There are two main types of polygon - regular and irregular.

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2 years ago

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What is the X for this 7x+12=26

lukranit [14]

Answer:

x = 2

Step-by-step explanation:

$7x + 12 = 26 \\ subtract \: 12 \: from \: both \: side \\ 7x = 14 \\ divide \: both \: side \: by \: 7 \\ x = 2$

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2 years ago

Y=-2(x-3)^2 +10<br> Y=4x

shepuryov [24]

Answer:

i might be wrong but 8 if not (2,8) if not sorry

Step-by-step explanation:

7 0

2 years ago