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2 years ago

5

A candy company has orders for chocolate bars feom 5 different stores. Each order dontains 45 chocolate bars. Use he distrubutiv

e property to digure out how many chocolate bars the candy company needs to make

2 answers:

AfilCa [17]2 years ago

8 0

I’m sorry but i genuinely don’t know the answer

LenKa [72]2 years ago

5 0

Answer:

CANDY diabeatise sgdigduejsdid

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Intellectual development (Perry) scores were determined for 21 students in a first-year, project-based design course. (Recall th

Anit [1.1K]

Answer:

The 99% confidence interval is (3.0493, 3.4907).

We are 99% sure that the true mean of the students Perry score is in the above interval.

Step-by-step explanation:

Our sample size is 21.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

$df = 21-1 = 20$ .

Then, we need to subtract one by the confidence level $\alpha$ and divide by 2. So:

$\frac{1-0.99}{2} = \frac{0.01}{2} = 0.005$

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 20 and 0.005 in the two-sided t-distribution table, we have $T = 2.528$

Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So

$s = \frac{0.40}{\sqrt{21}} = 0.0873$

Now, we multiply T and s

$M = 2.528*0.0873 = 0.2207$

Then

The lower end of the interval is the mean subtracted by M. So:

$L = 3.27 - 0.2207 = 3.0493$

The upper end of the interval is the mean added to M. So:

$LCL = 3.27 + 0.2207 = 3.4907$

The 99% confidence interval is (3.0493, 3.4907).

Interpretation:

We are 99% sure that the true mean of the students Perry score is in the above interval.

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3 years ago

An aircraft factory manufactures airplane engines. The unit cost (the cost in dollars to make each airplane engine) depends on t

Juliette [100K]

Answer:

Minimum unit cost = 5,858

Step-by-step explanation:

Given the function : C(x)=x^2−520x+73458

To find the minimum unit cost :

Take the derivative of C(x) with respect to x

dC/dx = 2x - 520

Set = 0

2x - 520

2x = 520

x = 260

To minimize unit cost, 260 engines must be produced

Hence, minimum unit cost will be :

C(x)=x^2−520x+73458

Put x = 260

C(260) = 260^2−520(260) + 73458

= 5,858

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3 years ago

Factor 3x 2 - 15x - 42. 3(x - 2)(x - 7) 3(x - 2)(x + 7) 3(x - 7)(x + 2)

Anna71 [15]

3*(x-7)*(x+2)
last option

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3 years ago

Read 2 more answers

Given that a = -1, b=2 and c= -3 ,find the value of a(b2+c2)

KiRa [710]

Answer:

a( $b^{2}$ + $c^{2}$ ) = = -13

Step-by-step explanation:

Given that a = -1, b=2 and c= -3

find the value of a( $b^{2}$ + $c^{2}$ )

Just substitute the values given for each variable

a( $b^{2}$ + $c^{2}$ ) = (-1)( $2^{2}$ + $(-3)^{2}$ ) ; do the exponents first

a( $b^{2}$ + $c^{2}$ ) = (-1)(4+9)=(-1)(13) ; now add inside the parenthesis;

a( $b^{2}$ + $c^{2}$ ) = -13 ; and multiply by -1

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3 years ago

Find 2 consecutive even intergers such that the smaller added to two times the larger gives a sum of 34

charle [14.2K]

The two consecutive integers would be 10 and 12. Not 100% sure though.

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3 years ago