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mars1129 [50]
3 years ago
8

Ms. Williams wants to analyze the scores for the first unit test of her NC Math 1 class

Mathematics
2 answers:
marishachu [46]3 years ago
6 0

Answer:

Mean:79

Median:81

Standard deviation:15

Interquartile range:22

kondor19780726 [428]3 years ago
6 0

Mean (aka average)-79.8928

<em>add all the numbers together and divide by how many numbers there are </em>

<u>sum of terms-2237</u>

<u>number of terms-28</u>

Median- 81

I do it this way-

order the numbers from least to greatest

cross off the front number and back number until you are left with a middle

in this case there were 2

80 and 82

the average of those two is 81

Standard Deviation-15.37237

Interquartile Range-22.5

<em>25th percentile-71</em>

<em>50th percentile-81</em>

<em>75th percentile-93</em>

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How many days will it be ?
NARA [144]

It will be 10 days if im right because you can see the pattern 2,4,6,8 and the total cost your basically adding 204 for each 246+204=450 etc.

5 0
3 years ago
1. An account is opened with a balance of $2800earning 4.25% simple interest. What will be thebalance in the account in 30 years
JulijaS [17]

Answer:

$6370

Explanation:

The simple interest formula gives us the final amount A given the principal amount P:

A=P(1+rt)

where r is the interest rate and t is the time interval.

Now in our case we have

P = 2800

r = 4.25/100

t = 30 years

therefore, the above formula gives

A=2800(1+\frac{4.25}{100}\cdot30)

which simplifies to give

\boxed{A=\$6370}

Hence, the account balance after 30 years will be $6370.

7 0
1 year ago
If a recipe says 1/4 for 4 servings then how many cups will 8 serving be for?
ehidna [41]

\dfrac{1}{4}\dots4 \\x\dots8 \\\dfrac{\frac{1}{4}}{x}=\dfrac{4}{8} \\\dfrac{1}{4x}=\dfrac{1}{2} \\1=2x \\x=\boxed{\dfrac{1}{2}}

Hope this helps.

5 0
3 years ago
Select 3 sides that can form a right triangle.
pochemuha

Answer: 14, 48, 50

Step-by-step explanation:

14^2+48^2=50^2

8 0
3 years ago
Quadrilateral ABCD is a kite. If AD=AB, find AD<br><br> A. 5/3<br> B. 7<br> C. 5/7<br> D. 22
ICE Princess25 [194]
AD = AB

AD = 2r+8
AB = 5r-13

we need to find the value of r to find the total length

so 2r+8 = 5r-13
subtract 2r from each side:
8 = 3r -13
add 13 to each side:
21 = 3r
divide both sides by 3
r = 21 / 3 = 7
r=7
 now we know r, so replace r with 7 in the equation for AD

AD = 2r+8 = 2(7) +8 = 14 +8 = 22

 the answer is D. 22


5 0
3 years ago
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