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quester [9]
4 years ago
10

Given the following test scores: 75, 83, 92, 56, 87, 78, 95, 85, 79, 88..... What is the mean? What percentage of the values fal

l within +/- 10 of the mean?
Mathematics
1 answer:
qwelly [4]4 years ago
4 0
The mean of the scores on the test is 81.8. the percentage of the amount of people that came within 10 of the mean is 60% 
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Hi, I am trying to find the Area but I cant tell if its 2D or 3D help please!
svetoff [14.1K]
Figure 1. = 1,890 feet squared
figure 2. = 936 feet squared
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3 years ago
Which linear function has the same y-intercept as the one that is represented by the graph? On a coordinate plane, a line goes t
Zolol [24]

The line which is having same y intercept as the line which passes through points (-4,0) and (0,3) is y=2x+3.

Given Points through which the line passes through are (-4,0) and (0,3)

We have to find the equation whose y intercept is equal to the y intercept of the line whose points given above.

First of all we have to find the y intercept of the line which passes through (-4,0) and (0,3). Equation of line is :

y-y1=(y2-y1)/(x2-x1)*(x-x1)

y-0=(3-0)/(0+4)  *(x+4)

y=3/4(x+4)

y -intercept exists where x=0

put x=0

y=3

So the options are:

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  • y=2x-3
  • y=2x+3
  • y=2x+4

By putting the value of x in all options we will find

y=-4

y=-3

y=3

y=4

So the third option is correct.

Hence the line whose y-intercept matched with the given line is y=2x+3.

Learn more about line at brainly.com/question/13763238

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5 0
2 years ago
Which fraction do you multiply by to simplify 5/ 4 - 3i ?
Rzqust [24]
So I assume
\frac{5}{4-3i}

If so. Let us begin.

\mathrm{Multiply\:by\:the\:conjugate}\:\frac{4+3i}{4+3i} \ \textgreater \  \frac{5\left(4+3i\right)}{\left(4-3i\right)\left(4+3i\right)} \ \textgreater \  \left(4-3i\right)\left(4+3i\right)

\mathrm{Apply\:complex\:arithmetic\:rule}:\ \left(a+bi\right)\left(a-bi\right)=a^2+b^2
Where\;a=4,\:b=-3 \ \textgreater \  4^2+\left(-3\right)^2 \ \textgreater \  Refine \ \textgreater \  25

\frac{5\left(4+3i\right)}{25} \ \textgreater \  \mathrm{Cancel\:the\:common\:factor:}\:5 \ \textgreater \  \frac{4+3i}{5}

Group\:the\:real\:part\:and\:the\:imaginary\:part\:of\:the\:complex\:number
\frac{4}{5}+\frac{3}{5}i\;is\;our\;answer!

Hope this helps!
3 0
3 years ago
The length of one side of a square city block is 462 meters. what is the perimeter of the block
trapecia [35]
The perimeter of any shape is just what you get when you add up all of the side lengths. We know that one side is 462 meters, and since a square has four equal sides, we can just mulitply 462 × 4 to get our perimeter, 1,848 meters.
3 0
3 years ago
Quickly answer or ill take this question down
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The cross sectional shape is a circle.
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