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Doss [256]
1 year ago
8

If a set of test scores has a large range but a small standard deviation, describe what this means about students' performance o

n the test.
a. Most of students' test scores are around the mean, except that few students got scores much less than the mean.

b. Most of students' test scores are around the mean.

c. Most of students' test scores are around the mean, except for the students who got scores much greater than the mean and a few students who got scores much less than the mean.

d. Most of students' test scores are around the mean, except for the students who got scores much greater than the mean.
Mathematics
1 answer:
Dafna11 [192]1 year ago
6 0

Answer:

C

Step-by-step explanation:

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Y is directly related to X , and Y is 81 when X is 27.<br><br> The constant of variation is
zhenek [66]
Since x and y are directly related, the equation for their comparison will look like

kx = y

where k is your constant. They give you an instance in the problem where x = 27 and y = 81. Plug this into the above equation and solve for k.

kx = y
k (27) = 81
k = 3

Thus, the constant of variation is 3.


5 0
3 years ago
Read 2 more answers
Please help!! I need ASAP 10 points &lt;3
Readme [11.4K]
5m+8 that’s it I’m pretty sure
5 0
3 years ago
Jane is having difficulty deciding whether to put her savings in the Mystic Bank or in the Four Rivers Bank. Mystic offers a 12%
storchak [24]

Jane must therefore deposit her savings in the four rivers bank.

<h3>What is compound interest?</h3>

Interest that is added to a loan and deposit sum is known as compound interest. In our everyday lives, it is the notion that is employed the most frequently. Compound interest is calculated as a sum using the interest and principal accrued over time. Compound interest versus simple interest differ primarily in this way.

As per the data provided in the question,

Rate, r = 12%

After five years, the total amount, if Jane had saved at Mystic Bank,if Jane had saved at Mystic Bank would be:

A = P(1+\frac{r}{100} )^n

For compounded quarterly,

n = 5 × 4

n = 20

A = 40000(1 + 12/(4 × 100))²⁰

A = 72244.44     (i)

If Jane placed her savings with the Four Rivers, then,

A = 40000(1 + 14/(2 × 100))¹⁰

A = 40000 × 1.9671

A = 78686.054  (ii)

Therefore, it is evident that case (ii) is higher than case (i). Jane must therefore deposit her savings in the four rivers bank.

To know more about Compound Interest:

brainly.com/question/29335425

#SPJ1

6 0
1 year ago
Have to find shaded area of the figure please help need ASAP
ladessa [460]

Answer:

199ft2

Step-by-step explanation:

area) H*W

(16ft×20ft)-(11ft×11ft)

=320ft2-121ft2

<h3>=199ft2</h3>

<em>ft</em><em> </em><em>square</em><em> </em><em>=</em><em>ft</em><em>2</em>

6 0
3 years ago
Does anyone knows how to do that? <br> I need to solve for x
vesna_86 [32]

Answer:

x=17°

Step-by-step explanation:

Because the diagonal lines are marked with arrows, we know that they are parallel. The two angles that are marked with measures are same-side interior angles. Same-side interior angles of parallel lines are supplementary, meaning that the sum of their measures is 180°.

Now, with all of this information, we can set up the following equation and solve for x:

115+4x-3=180

112+4x=180 (Simplify LHS by combining like terms)

112+4x-112=180-112 (Subtract 112 from both sides of the equation to isolate x)

4x=68 (Simplify)

\frac{4x}{4}=\frac{68}{4} (Divide both sides of the equation by 4 to get rid of x's coefficient)

x=17° (Simplify)

Hope this helps!

5 0
3 years ago
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