MATHEMATICS MIDDLE SCHOOL

Evaluate 8j – k + 14 when j = 0.25 and k = 1.

Answers

Answer 1
Answer:

Answer:

15

Step-by-step explanation:
Answer 2
Answer:

Answer:

The answer should be 15.

Step-by-step explanation:

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Line KN represents a proportional relationship. Point N lies at (18,12), as shown on thegraph below.NONA2 4 6 8 10 12 14 16 18 20Which ordered pair could represent the coordinates of point K? (2016)A. (6,0)B. (2,3)C. (1.5, 0)D. (7.5, 5)
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A bicycle store costs $1650 per month to operate.The store pays an average of $60 per bike.The average selling price of each bicycle is $90 how many bicycles must the store sell each month to break even

Answers

they would need to sell 18.34 round up to 19 or down to 18 to break even

For what value of c is the relation a function: (2,8),(12,3), (c,4), (-1,8), (0,3)?

Answers

It seems to me c could be any number besides 2,12,-1 or 0

why?

a function is defined by each x value having a single y value

if an x value has two numbers such as (0,1) (0,2) than it is not a function.

the vertical line test is great for seeing if something is a function becasue it determines if each x value has one y value.

The cross section of a metal ingot is a trapezoid. The cross section has an area of 39 square centimeters. The top base of the cross section is 12 centimeters. The length of the bottom base is 2 centimeters greater than the top base. How tall is the metal ingot?

Answers

metal ingot is 5cm tall

Explain how you would find the base area of a rectangle prism if you know the volume and the height

Answers

If the volume and the height are known, then we can find the base area of a rectangle prism by these steps:

Find the area of two sides (Length*Height)*2 sides

Find the area of adjacent sides (Width*Height)*2 sides

Find the area of ends (Length*Width)*2 ends

Add the three areas together to find the surface area

We know that,

Surface Area of Rectangular Prisms :

A rectangular prism has 2 ends and 4 sides. Opposite sides have the same area. The surface area is the sum of the areas of all six sides.

Here, we have,

to find the surface area of Rectangular Prisms:

Find the area of two sides (Length*Height)*2 sides

Find the area of adjacent sides (Width*Height)*2 sides

Find the area of ends (Length*Width)*2 ends

Add the three areas together to find the surface area

Example:

The surface area of a rectangular prism 5 cm long, 3 cm. wide and 2 cm. high = 5*2*2 + 3*2*2 + 5*3*2 = 20 + 12 + 30 = 62 cm^2.

learn more on surface area click :

brainly.com/question/23973712

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Surface Area of Rectangular Prisms
A rectangular prism has 2 ends and 4 sides. Opposite sides have the same area. The surface area is the sum of the areas of all six sides.

How to find the surface area of Rectangular Prisms:

Find the area of two sides (Length*Height)*2 sides
Find the area of adjacent sides (Width*Height)*2 sides
Find the area of ends (Length*Width)*2 ends
Add the three areas together to find the surface area
Example: The surface area of a rectangular prism 5 cm long, 3 cm. wide and 2 cm. high = 5*2*2 + 3*2*2 + 5*3*2 = 20 + 12 + 30 = 62 cm2.

Jamie is selling tickets at a whale watch at a local beach.The tickets cost $24.40 for an adult and $14.50 for a child.Jamie earns a 30% commission on all ticket sales.Write an expression using parentheses to represent how much Jamie earns from selling tickets,where a is the number of adult tickets c is the number of children tickets sold.Use the distributive property to simplify the expression.please explain too :D

Answers

30% = .3

.3(24.40a + 14.50c)

24.40 = cost of adult ticket
14.50 = cost of child ticket
a = # of adult tickets sold
c = # of child tickets sold

.3 * 24.40a + .3 * 14.50c
answer: 7.32a + 4.35c 

No guessing please help no direct answer please help understandPeyton earned simple interest on $12,550 with an annual interest rate of 2.7% for 5 years. How much did she earn in interest? Round your answer to the nearest cent.

simple interest: I = P • r • t

Answer:_______

Answers

I was about to give you the formula you need,
but I see you already have it.

Simple interest:   I = P · r · t

      Interest = (Principle) · (rate) · (time)      

The question says ...

Principle = $12,550
Rate = 2.7%        (that's 0.027)
Time = 5 years

Now it's your turn.
Write the numbers into the formula,  and calculate the interest.
The short answer is $1,694.25.  To get this answer you plug it into the equation, so P would be $12,550, r would be .027, and t would be 5, so it would look like this in expanded form:
I=12,550*.027*5.
If you do the math from there, simple multiplication, you will get my answer.  I hope this helps, have a nice day! :)
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