30 1 5 miles in 2 3 of an hour. What is the average speed, in miles per hour, of the car?

Answers

Answer 1
Answer:

Answer:

131.086

Step-by-step explanation:


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andrew says that in 15 years, the building he lives in will be twice as old as it was 7 years ago. how old is the building that andrew lives in?
Write a word problem that you can solve using multiples to estimate the quotient. Include a solution.

Solve each equation (steps as to how appreciated)

Answers

Answer:

{0}

Step-by-step explanation:

|n/6| + 1 = 1

Subtract 1 from each side

|n/6| + 1-1 = 1-1

|n/6| =0

Since this is equal to zero what is inside the absolute value must equal zero

n/6 =0

n =0

Answer:

B) {0}

Step-by-step explanation:

Let's go step by step

|n/6| + 1 = 1

First step is to subtract 1 from both sides:

|n/6| = 0

Now, we can multiply both sides by 6:

n = 0

Hope this helps :)

The front and back covers of a textbook are each 0.3 cm thick. Between the covers are 200 sheets of paper, each 0.008 cm thick. How high is a stack of 10 books

Answers

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. The height of the 10 stacks of books is 22cm.

What is multiplication?

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

Given that the front and back covers of a textbook are each 0.3 cm thick. Also, there are 200 sheets of paper between the cover and the thickness of each sheet is 200 sheets. Therefore, the thickness of the book is,

The thickness of a single book

= (Number of covers × Thickness of cover) + (Number of sheets × Thickness of sheets)

= (2 × 0.3cm) + (200 × 0.008cm)

= 2.2 cm

Now, the thickness of 10 books will be,

The thickness of 10 books = 10 × the Thickness of a single book

                                            = 10 × 2.2 cm

                                            = 22 cm

Hence, the height of the 10 stacks of books is 22cm.

Learn more about Multiplication here:

brainly.com/question/14059007

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Answer:

22 cm

Step-by-step explanation:

Start off by multiplying the number of pages by the thickness.

200*0.008=1.6

Add the thickness of the front and back cover.

1.6+0.6=2.2

Multiply by 10.

2.2*10=22 cm

a basket of laundry is being separated.  Divide 48 pieces of clothing into 2 groups so that the ratio is 1:3

Answers

The answer to this question would be 12 cloth: 36 cloth

In this question, you are asked to divide the clothing into 1:3 ratio. That mean, you need to divide the clothing into 4 parts (1+3), then put 1 part in one basket and 3 parts in other baskets. The calculation would be:

Basket 1= 48 cloth * 1/(1+3)= 12 cloth
Basket 2= 48 cloth * 3/(1+3)= 36 cloth

Answer:

12

Step-by-step explanation:

1+3=4

so 48/4=12

Use division to find all the whole number ratios equivalent to 168 : 56

Answers

168|2\n.\ 84|2\n.\ 42|2\n.\ 21|3\n.\ \ 7|7\n.\ \ 1|\n\n56|2\n28|2\n14|2\n.\ 7|7\n.\ 1|

168:56=(2\cdot2\cdot2\cdot3\cdot7)/(2\cdot2\cdot2\cdot7)\n\n=(2\cdot2\cdot3\cdot7)/(2\cdot2\cdot7)=\boxed{(84)/(28)}\n\n=(2\cdot2\cdot2\cdot3)/(2\cdot2\cdot2)=\boxed{(24)/(8)}\n\n=(2\cdot3\cdot7)/(2\cdot7)=\boxed{(42)/(14)}\n\n=(2\cdot3)/(2)=\boxed{(6)/(2)}\n\n=\boxed{(3)/(1)}\n\n=(2\cdot2\cdot3)/(2\cdot2)=\boxed{(12)/(4)}\n\n=(3\cdot7)/(7)=\boxed{(21)/(7)}

A restaurant sells 10 tacos for $8.49 or 6 of the same kind of taco for $5.40 which is a better deal

Answers

Answer:

10 for 8.49

Step-by-step explanation:

With the 6 for 5.40 each taco is 90 cents. With 10 for 8.49 each taco is Around 85 cents.

Answer:

The 6 taco deal is better

Step-by-step explanation:

The 6 taco pack is a better deal. This is because the 10-pack has a unit rate of about $8.00 per taco, and the 6-pack has a unit rate of about $5.00 per taco.

The resting heart rates for 80 women aged 46–55 in a simple random sample are normally distributed, with a mean of 71 beats per minute and a standard deviation of 6 beats per minute. Assuming a 90% confidence level, what is the margin of error for the population mean? 0.66 1.10 1.31 1.73

Answers

Given:
Confidence level = 90%
mean = 71 beats per minute
standard deviation = 6 beats per minute

margin of error = z * δ / √n

where : δ - population of the standard deviation, n is the sample size ; z is the appropriate z value.

90% confidence level = 1.645 in z-value

margin of error = 1.645 * (6/√80) = 1.645 * (6/8.94) = 1.645 *  0.671 = 1.104

The margin of error is 1.10