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3 years ago

A copy machine can print 480 every 4 minutes a teacher printed 720 how long did it take

Mathematics

1 answer:

Nutka1998 [239]3 years ago

4 0

Answer:

6 minutes

Step-by-step explanation:

480/4 = 120 , 720/120 = 6 minutes Hope this helps

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Iris is playing a game at the school carnival. There is a box of marbles, and each box has a white, a green, a red ,and an orang

Fittoniya [83]

1 white, 1 green, 1 red, and 1 orange....total of 4 marbles
spinner with 4 sections

sample space would be : 4 * 4 = 16 <=

7 0

3 years ago

Find a point on the y-axis that is equidistant from the points (8, −8) and (1, 1).

artcher [175]

$\text{We know that any point on the y-axis is of the form (0, y),}\\
\text{because on y-axis we have x=0.}\\
\\
\text{So let (0, y) be the point on the y-axis that is equidistance from}\\
\text{the points }(8,-8) \text{ and }(1,1)\\
\\
\text{so using the distance formula, we have}\\
\\
\text{Distance between (0, y) and }(8,-8)=\text{Distance between (0,y) and }(1,1)\\
\\
\Rightarrow \sqrt{(0-8)^2+(y-(-8))^2}=\sqrt{(0-1)^2+(y-1)^2}$

$\Rightarrow \sqrt{64+(y+8)^2}=\sqrt{1+(y-1)^2}\\
\\
\text{Squaring both sides, we get}\\
\\
(\sqrt{64+(y+8)^2})^2=(\sqrt{1+(y-1)^2})^2\\
\\
\Rightarrow 64+(y+8)^2=1+(y-1)^2\\
\\
\Rightarrow 64+(y^2+16y+64)=1+(y^2-2y+1)\\
\\
\Rightarrow y^2+16y+128=y^2-2y+2\\
\\
\Rightarrow y^2+16y-y^2+2y=2-128\\
\\
\Rightarrow 18y=-126\\
\\
\Rightarrow y=\frac{-126}{18}\\
\\
\Rightarrow y=-7$

So the point on the y-axis that is equidistant from the points (8,-8) and (1,1) is: (0,-7)

3 0

4 years ago

4 ×6 ÷ 5/6 ÷ 66⅖/-1000 • 4•8 = y <br>find x

CaHeK987 [17]

Answer:

-384000÷11

Step-by-step explanation:

calculate all these and get answer

3 0

3 years ago

100-121^2=0 What are solutions to this equation?

Neporo4naja [7]

Answer:

-14541

Step-by-step explanation:

100 - 121² = 0

100 - 14641

-14541

7 0

3 years ago

Read 2 more answers

F(x) = x2 + 10<br> What is the average rate of chan<br> hange of f over the interval [-2, -1]?

Readme [11.4K]

The average rate of change is given by [f(b) - f(a)]/(b - a), where a and b represent the interval [a, b].

Let a = -2

Let b = -1

[(-1)^2 + 10 - ((-2)^2 + 10)]/(-1 -(-2))

[1 + 10 - (4 + 10)]/(-1 + 2)

[1 + 10 -4 -10]/(1)

[1 - 4]/(1)

-3/1

Answer: -3

5 0

3 years ago