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3 years ago

Convert 75 miles per hour to feet per minute.

Mathematics

2 answers:

ra1l [238]3 years ago

7 0

6600 Feet per minute

lesya [120]3 years ago

3 0

Answer: The correct option is

(D) 6600 ft/min.

Step-by-step explanation: We are given to convert 75 miles per hour to feet per minute.

We know that

1 mile = 5280 feet and 1 hour = 60 minutes.

Therefore, we get

$75~\textup{miles/hour}\\\\\\=\dfrac{75~\textup{miles}}{1~\textup{hour}}\\\\\\=\dfrac{75\times5280~\textup{feet}}{1\times60~\textup{minutes}}\\\\\\=75\times88~\textup{feet/min}\\\\=6600~\textup{feet/min}.$

Thus, 75 miles per hour is equal to 6600 feet per minute.

Option (D) is CORRECT.

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D) A certain production process takes two stages 1 and 2. In a given period 5,000 units were introduced in process one and the c

Flauer [41]

The cost per unit of the complete units assuming that defective units are sold at Ksh 20 per unit is Rm 93.73.

<h3>What is the cost per unit with defective units?</h3>

The cost per unit with defective units can be computed by subtracting the sales value of the sold defective units from the total production costs, thereby reducing the total production costs, and then dividing the resulting figure by the number of good units.

<h3>Data and Calculations:</h3>

Process 1 Process 2 Total costs

Materials Rm 100,000 150,000 250,000

Labor 50,000 50,000 100,000

Overheads 50,000 20,000 70,000

Total costs 420,000

Input units = 5,000

Output units = 4,480

Defective units = 520 (5,000 - 4,480)

Sales revenue from defective units = Rm 104 (520 x Rm 0.20)

Cost per unit = Rm 93.73 (Rm 420,000 - Rm 104)/4,480

Thus, the cost per unit of the complete units assuming that defective units are sold at Ksh 20 per unit is Rm 93.73.

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2 years ago

A fast food restaurant executive wishes to know how many fast food meals teenagers eat each week. They want to construct a 99% c

Lana71 [14]

Answer:

The minimum sample size required to create the specified confidence interval is 2229.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

What is the minimum sample size required to create the specified confidence interval

This is n when $M = 0.06, \sigma = 1.1$

$0.06 = 2.575*\frac{1.1}{\sqrt{n}}$

$0.06\sqrt{n} = 2.575*1.1$

$\sqrt{n} = \frac{2.575*1.1}{0.06}$

$(\sqrt{n})^{2} = (\frac{2.575*1.1}{0.06})^{2}$

$n = 2228.6$

Rounding up

The minimum sample size required to create the specified confidence interval is 2229.

7 0

3 years ago

Help please?!?!?!?!?!?!?!?!?!?!?!?!

zubka84 [21]

PEMDAS.

Parentheses

Exponents

Multiplication

Division

Addition

Subtraction

Lets apply that here.

72-[(3x2^3)+48]

So first we start with (3x2^3)

2^3=8

3*8=24

now we do 24+48 which equals 72

now we have 72-72 which equals zero.

72-[(3x2^3)+48] = 0

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3 years ago

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Giovanni was playing with blocks and started with one blue triangular block and kept adding more

raketka [301]

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The correct option is A

<h3></h3><h3>What is series?</h3>

A series is the cumulative sum of a given sequence of terms.

Given:

We can write the series as follows:

1,4,7,10,13,.......

First term =1

common difference= 4-1=3

Using Arithmetic series

$a_{12}\\$ = a+11d

= 1 +11*3

= 1+33

= 34.

Hence, 34 blocks need on 12th step.

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2 years ago

Can someone please help me answer my question

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The surface area would be 150cm and the volume would be 125cm. To get volume you do 5 cubed to get the answer 125. To get surface area you would do 5 multiplied by 5 multiplied by the cubes 6 sides to get 150.

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