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Elden [556K]
3 years ago
9

Some stores print multiple coupons and advertisements on their receipts, making the receipts unusually long. A curious shopper m

akes the same purchase at a random sample of 10 stores and measures the length of each receipt (in inches). Here are the results:
8.25, 7.5, 5, 9.5, 12, 5.5, 9, 14, 11.5, 18

What is the value of the standard error of the mean?
1.256
1.324
4.992
5.262
Mathematics
1 answer:
LiRa [457]3 years ago
7 0

Answer:

Option A

Step-by-step explanation:

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John bought a used truck for $4,500. He made an agreement with the dealer to put $1,500 down and make payments of $350 for the n
musickatia [10]

Answer:

(D) 36%

Step-by-step explanation:

Actual cost of truck = $4500

Down payment = $1500

Money left to be paid = 4500-1500 =  $3000

A = Monthly payments = 350

n = 10

Principal value (P) = 3000

Using formula,

A= \frac{Pr(1+r)^{n}}{(1+r)^{n}-1}

350 =\frac{3000r(1+r)^{10}}{(1+r)^{10}-1}

       = 36% (approx)

Hence (D) is correct.

5 0
3 years ago
How many models oder 100 do you need to model 3200? Explain.
Nat2105 [25]
3200÷100=32
Since each model is 100, you need 32 to model 3,200
6 0
3 years ago
Please help thx 10 poin
Annette [7]

Answer:

X = 55

Step-by-step explanation:

If the angel is 90:

75 + 90 = 165

165 divided by 3 = 55

7 0
3 years ago
I need the answer pls
AleksAgata [21]

the answer is 32.........

8 0
3 years ago
Find the fourth roots of 256(cos 240° + i sin 240°).
Mashcka [7]

Answer with Step-by-step explanation:

We are given that

We have to find the fourth roots of given complex number.

(256)^{\frac{1}{4}}=(4^4)^{\frac{1}{4}}=4^^{\frac{1}{4}\times 4}=4

By using the formula

(a^b)^x=a^{bx}

\theta=240^{\circ}

\theta=\frac{240}{4}=60^{\circ}

Angle of rotation=\frac{360}{4}=90^{\circ}

Therefore, the four roots of given complex number are

4(cos 60^{\circ}+i sin60^{\circ})

4(cos150^{\circ}+i sin150^{\circ})

4(cos240^{\circ}+isin 240^{\circ})

4(cos330^{\circ}+i sin330^{\circ})

8 0
3 years ago
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