MATHEMATICS
MIDDLE SCHOOL

1.05 + 1.09m + 2.79n

1.05(1.09m + 2.79n)

0.95(1.09m + 2.79n)

Answer:

Answer: The expression that represents Cindy´s bill is 0.95(1.09m + 2.79n).

Step-by-step explanation:

Hi, to find the correct expression we have to analyze the information given:

Packs of ballpoint pens = m

Price of ballpoint pens=$1.09 each

Composition books= n

Price of composition books = $2.79 each

Discount 5%

Cindy buys m packs of ballpoint pens and n composition books. To represent this statement in an equation we have to multiply each quantity of the items bought by the price of each item.

So, mathematically speaking

1.09m + 2.79n

Now, to apply the 5% percent discount we have to multiply the whole expression by 0.95.

0.95(1.09m + 2.79n)

In conclusion, the expression that represents Cindy´s bill is 0.95(1.09m + 2.79n).

Feel free to ask for more if it´s necessary or if you did not understand something.

Answer: The answer would be D.

Since you get a 5% discount you only have to pay 95% of the regular price hence the .95(....

Since you get a 5% discount you only have to pay 95% of the regular price hence the .95(....

MIDDLE SCHOOL

I don't know if 30 is prime or composite

A prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. As we proceed in the set of natural numbers N = {1, 2, 3, ...}, the primes become less and less frequent in general.

30 is composite ...........................................

COLLEGE

The surface area of a cylinder consists of the sum of the areas of what shapes?

The surface area of a cylinder includes the bases which are circles and the side which is a rectangle

Two circles with a radius equal to the radius of the of the cylinder and a rectangle with a height equal to the height of the cylinder and a width equal to the circumference of the cylinder.

So it is the sum of the area of two circles and a rectangle.

So it is the sum of the area of two circles and a rectangle.

HIGH SCHOOL

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 next 10 months. The extra cost paid by taking this deal is equivalent to what actual yearly rate of interest? A. 36%

B. 63%

C. 3.6%

D. 33%

I think it is D But it could also be A

HIGH SCHOOL

What are all prime numbers that are less than 100?

Hello there

What are all prime numbers that are less than 100?1,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,91 and 97

What are all prime numbers that are less than 100?1,2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,91 and 97

HIGH SCHOOL

Which of the following statements have the same result? Explain each step in solving each one. f(1) when f(x) = 5x + 1

f−1(3) when f(x) = 2x plus 3, all over 5

3y − 7 = y + 5

Answer: f(1) when f(x) = 5x + 1 and 3y - 7 = y + 5

MIDDLE SCHOOL

Please help.

Answer:

6/40 ; Simplified: 3/20

Step-by-step explanation:

Multiply the two fractions. Note that when multiplying, you do not need common denominators. Multiply straight across.

3/10 * 2/4 = 6/40

Simplify if needed. Divide common factors from both the numerator and denominator.

(6/40)/(2/2) = 3/20

~

Answer,

Explanation,

Hope This Helps :-)

HIGH SCHOOL

A certain brand of automobile tire has a mean life span of 32,000 miles and a standard deviation of 2,450 miles. (Assume the life spans of the tires have a bell-shaped distribution.) (a) The life spans of three randomly selected tires are 34,000 miles, 37,000 miles, and 31,000 miles. Find the z-score that corresponds to each life span.

Answer:

a)

The z-score corresponds to 34000 is 0.816

The z-score corresponds to 37000 is 2.041

The z-score corresponds to 31000 is -0.408

Step-by-step explanation:

The z-score corresponds to 34000

Let x=34000

z-score=(x-mean)/standard deviation

z-score=34000-32000/2450=0.816

The z-score corresponds to 34000 is 0.816

The z-score corresponds to 37000

Let x=37000

z-score=(x-mean)/standard deviation

z-score=37000-32000/2450=2.041

The z-score corresponds to 37000 is 2.041

The z-score corresponds to 31000

Let x=31000

z-score=(x-mean)/standard deviation

z-score=31000-32000/2450=-0.408

The z-score corresponds to 31000 is -0.408

HIGH SCHOOL

A reporter collected. Data on y, the current market value in dollars of a cetian car for various years x ,after it had been purchased new. What does The slope in this graph Of this equation Represents

How much value the car depreciates each year.

HIGH SCHOOL

What is descriptive statistics and inferential statistics?

Descriptive statistics uses data to provide descriptions of populations. Often this data is represented in the form of tables, charts, graphs, or even just numbers. Here, we organize (visual representation) and analyze data to describe a population.

Inferential statistics utilizes data in such a way that allows us to make predictions, generalizations, and inferences about a population from samples taken. Here, we can compare, predict, and test data in order learn about a population.

Hope this helps.

Inferential statistics utilizes data in such a way that allows us to make predictions, generalizations, and inferences about a population from samples taken. Here, we can compare, predict, and test data in order learn about a population.

Hope this helps.

Descriptive statistics is a one type of statistics which involve generalization of conclusions from small selected samples.

Inferential statistic is atype of statistic which involve summarization of data in numerical form.