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vampirchik [111]

3 years ago

14

On Wednesday, 1/3 of the students wore blue shirts and 1/2 of the students wore white shirts. What fraction of students wore eit

her a blue shirt or a white shirt?

1 answer:

s344n2d4d5 [400]3 years ago

5 0

Should be 5/6 if you balance it by making the denominator the same

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Solve the system of equations.<br> <img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7By%3D220x-160%7D%20%5Catop%20%7By%3

Leni [432]

$\begin{cases} y=220x-160\\ y=20x^2-400 \end{cases}\qquad \qquad \stackrel{\textit{substituting on the 2nd equation}}{\stackrel{\textit{\Large y}}{220x-160}~~ = ~~20x^2-400} \\\\\\ -160=20x^2-220x-400\implies 0=20x^2-220x-240 \\\\\\ 0=20(x^2-11x-12)\implies 0=x^2-11x-12 \\\\\\ 0=(x-12)(x+1)\implies x= \begin{cases} 12\\ -1 \end{cases}$

$\dotfill\\\\ x=12\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(12)-160}\implies y=2480 \\\\\\ x=-1\qquad \qquad \stackrel{\textit{substituting on the 1st equation}}{y=220(-1)-160}\implies y=-380 \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (12~~,~~2480)\qquad (-1~~,~~-380)~\hfill$

4 0

2 years ago

What are the numbers that are either negative or greater than 5

Reptile [31]

postive or greater6 7 8 9 10

negative or less 4 3 2 1 0

7 0

3 years ago

Help! will give brainlist!

slega [8]

Answer:

117.5

Step-by-step explanation:

y= 3.5x + 30, where x = his number of toys sold

y= 3.5(25) + 30

y= 117.5

5 0

3 years ago

Kayla uses 3/4 tablespoon of glitter for each craft project she is making. She used a total of 4 1/2 tablespoons of glitter. How

iris [78.8K]

The answer would be 6 crafts

3 0

3 years ago

Read 2 more answers

What is the slope of the line that passes through the points (5,0) and (-3,1)? Write your assignment and simplest form.

Verdich [7]

m = (y2-y1)/(x2-x1)

m = (1-0)/(-3-5)

m = 1/-8

4 0

3 years ago