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3 years ago

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the original price of a sweater is d dollars. you buy the sweater for (m - 3) dollars. you decorate the sweater and sell it for

(5m - 7) dollars. write an expression that represents your earnings from buying and selling the sweater

1 answer:

lora16 [44]3 years ago

7 0

Answer:

-10d

Step-by-step explanation:

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12 • 3 ÷ 9 - 2(4² - 10) + 8

vladimir2022 [97]

Answer:

Awnser is 6

Step-by-step explanation:

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3 years ago

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ExtremeBDS [4]

Answer: -1

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3 years ago

M angle 3= 31°. Find m angle 4 (complementary angle)

solniwko [45]

Hi, there.

________

$\boxed{\begin{minipage}{8cm} Complementary angles \\ Complementary angles are angles whose sum \\ is 90^\circ. \text{Using this info, let's consider this:} \\ \text{If an angle's measure is 31 degrees, what's} \\ \text{its \ complement?}\end{minipage}}$

$\text{Set up an equation, letting a be the unknown angle}$

$\bold{a+31=90}\\\text{Subtract 31 from both sides}\\\bold{a=59}$

Hope the answer - and explanation - made sense,

happy studying!!

6 0

1 year ago

-5x=20 is x=-4? i need help and im not sure if thats correct.

Korvikt [17]

Answer:

Well if you put -4 where x is.. you still do get the answer of 20.

So that is correct.

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Look at the figure XYZ in the coordinate plane. Find the perimeter of the figure rounded to the nearest tenth.

ki77a [65]

the distance form X to Y is clearly -6 to 0 is 6 units, and 0 to 8 is 8 units, so 6 + 8 = 14 units.

now, for XZ and ZY we can simply use as stated, the distance formula to get those and then add them all to get the perimeter.

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ X(\stackrel{x_1}{-6}~,~\stackrel{y_1}{2})\qquad Z(\stackrel{x_2}{5}~,~\stackrel{y_2}{8})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ XZ=\sqrt{[5-(-6)]^2+[8-2]^2}\implies XZ=\sqrt{(5+6)^2+(8-2)^2} \\\\\\ XZ=\sqrt{121+36}\implies \boxed{XZ=\sqrt{157}} \\\\[-0.35em] ~\dotfill$

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ Z(\stackrel{x_2}{5}~,~\stackrel{y_2}{8})\qquad Y(\stackrel{x_2}{8}~,~\stackrel{y_2}{2})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ ZY=\sqrt{(8-5)^2+(2-8)^2}\implies ZY=\sqrt{9+36}\implies \boxed{ZY=\sqrt{45}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{perimeter}{14+\sqrt{157}+\sqrt{45}}\qquad \approx \qquad 33.2$

6 0

3 years ago