MATHEMATICS MIDDLE SCHOOL

You buy 3 pounds of organic apples for 7.50. what is the unit rate for each type of apples?

Answers

Answer 1
Answer: To find this you need to divide 7.50 by 3. You then get $2.5, which is the unit rate for one apple.

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A certain colony of bacteria triples in length every 10min. Its length is now 1 millimeter. how long will it be in 40min?(show work please! and in a 6th grader form)

Answers

Bacteria length = 1mm

It will triple four times by 40 min.

This can be shown as 3 to the power of 4; 3⁴ = 81

Original length * growth factor = final length

1 mm * 81 = final length

81 = final length

After 40 mins, the bacteria colony will be 81 mm in length.
Think of it this way. Every ten minutes, its length is multiplied by 3.

After 10 minutes, it will be 3 ml long.
After 20 minutes, it will be 9 ml long.
After 30 minutes, it will be 27 ml long.
After 40 minutes, it will be 81ml long.

In other words, 1x3x3x3x3=81

A town in east Texas received 10 inches of rain in two weeks. If it kept raining at this rate for a 31-day month, how much rain did the town receive?

Answers

If it rained 10 inches in 14 days, then it seems that it rained 10/14 or 5/7 inches of rain per day hypothetical. And since you want to see how many inches it rained in 31 day, multiply 5/7 by 31 and you get about 22.1 inches of rain. Hope this helps. 

What is the slope of the line that passes through the points (14, 5) and (20, –4)? A. -3/2 B. -2/3 C. 2/3 D. 3/2

Answers

The slope of the line that passes through the points (14/5) and (20, -4), so you take y-y/x-x so you substitute the y's in for 5 and -4 and x in for 14 and 20.

5--4/ 14-20
9/-6
Then you make the fraction smaller! 
-3/2 = Answer 

Find the area of each figure

Answers

For the pencil shaped shape, we need to split the shape up in 2 parts (which has already been done!). Lets figure out the rectangle first. To find the area of a rectangle it is Length x Width.
a=lxw
a=6x10
a=60m2 
(the m2 means square meters)

For the triangle the formula is Base x Height ÷ 2
a=bxh÷2
a=7x6÷2
a=42÷2
a=21m2

Now we just add up the rectangle and triangle area and voila! You have the area! 
21+60=81m2 
The area of the shape is 81m2
The rectangles area is 60. The triangles area is 21

Write a multiplication expression without exponents that is equivalent to 3^3

Answers

Final answer:

The equivalent multiplication expression for 3^3 without using exponents is 3 x 3 x 3. Exponentiation is a mathematical operation in which the base number gets multiplied by itself as many times as specified by the exponent.

Explanation:

The expression

3^3

in mathematics is essentially stating that the number 3 should be multiplied by itself twice. So, without using exponents, an equivalent multiplication expression would be

3 x 3 x 3

. This is because exponentiation is a mathematical operation in which the base number gets multiplied by itself for the number of times specified by the exponent.

Learn more about Exponentiation here:

brainly.com/question/32033020

#SPJ2

Answer:

3 times 9

Step-by-step explanation:

3^3 = 3*3*3 = 27 = 3*9

Cost of manicure is 19.95 markup is 85% and discount is 48%

Answers

Total would be $27.33
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