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Tanzania [10]
3 years ago
13

Ellen types 205 words in five minutes. Which student has the same typing speed as Ellen?

Mathematics
1 answer:
Arada [10]3 years ago
6 0

Answer:

B. Bradley

Step-by-step explanation:

We know that Ellen can type 205 words in 5 minutes. To start comparing to the other students, we need to find out how many words she can type per minute. We can divide 205 by 5 to get our answer.

x=\frac{205}{5}

x=41

<u>Ellen can type 41 words per minute</u>. To find our answer we must find how many words per minute the other students can type. Lets start with the first and go down from there:

Alissa:

x=\frac{220}{20}

x=11

It can't be Alissa.

Bradley:

x=\frac{328}{8}

x=41

Your answer is B. Bradley

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Mark and Nick played a game three times. Mark's scores were 208 , 112, and 167. Nick's scores were 96 , 172, and 206. How many m
Sedaia [141]

Answer:

Mark got 13 more points than Nick did

Step-by-step explanation:

Mark's score in all was: 487

Nick's score in all was: 474

5 0
3 years ago
What is the area of the lateral surface of the following cylinder?
NikAS [45]
<span>Surface Area =<span> (2 • <span>π <span>• r²) + (2 • <span>π • r • height)
</span></span></span></span></span>
<span>(2 • <span>π <span>• r²) is surface area of the "ends"
</span></span></span>
<span>(2 • <span>π <span>• r • height) is lateral area
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<span>Lateral Area = 2 * PI * 2 * 7
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<span>Lateral Area =28 * PI =
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<span><span><span>87.9645943005 square inches</span></span></span><span><span><span> </span> </span> </span>
Answer is B

4 0
3 years ago
Read 2 more answers
Y=|x-2|-4 how do I solve this and graph it
nata0808 [166]
Nothing to "solve" here.  Just graph this absolute value function.

Note that if x=2 we get y = -4.  Thus, (2,-4) is the vertex.  Plot this point.

Now, starting from (2, -4), draw a line at a 45 degree angle to the horizontal.

Then draw a corresponding line on the other side of the y-axis.  You're done!


5 0
4 years ago
How do you do this question?
alina1380 [7]

Answer:

(8√2) / 15

Step-by-step explanation:

A curve bounded by the y-axis is represented by in terms of dy;

\int \:x\:dt

When the curve crosses the y-axis, x will be 0. In this case x is the function of t, so we have to solve for x(t) = 0;

0 = t^2 + 2t --- (1)

Solution(s) => t = 0, t = 2

dy = (1/2 * 1/√t)dt --- (2)

Our solutions (0, 2) are our limits. The area of the curve is in the form A\:=\:\int _b^a\:f\left(t\right)g'\left(t\right)dt , so now let's introduce the limits of integration, x(t) and dy/dt. Remember, dy/dt = (1/2 * 1/√t) (second equation). 1/2 * 1/√t can be rewritten as 1/2 * t^(-1/2)....

A\:=\:\int _2^0\:\left(t^2-2t\right)\left(\frac{1}{2}t^{-\frac{1}{2}}\right)dt\\\\= \int _2^0\:\left(\frac{1}{2}t^{\frac{3}{2}}-t^{\frac{1}{2}}\right)dt\\\\= \left[\frac{t^{\frac{5}{2}}}{5}-\frac{2t^{\frac{3}{2}}}{3}\right]_2^0\\\\= 0\:-\:\left(\frac{4\sqrt{2}}{5}-\frac{4\sqrt{2}}{3}\right)\\\\= \frac{8\sqrt{2}}{15}

Your solution is 8√2 / 15

7 0
3 years ago
Write as a unit rate<br>12 inches of rain in 6 hours​
RideAnS [48]
Answer is 2 inches per hour.

12 inches/6 hours divided by 6 is 2 inches/ 1 hour.
5 0
3 years ago
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