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Alex73 [517]
3 years ago
10

Hello so as you can see i got a ton of hw :) Helpp :')

Mathematics
2 answers:
olasank [31]3 years ago
8 0

Answer:

Step-by-step explanation:

A. 1.13 and B is 1.37

Gemiola [76]3 years ago
4 0

Answer:

A. $1.13

B. $1.37

Step-by-step explanation:

So the item costs $2.50 baseline but there is a 45% off sale.

Let P = the percentage off, x = the original cost, and y = the amount saved

Let's use the formula P% * x = y.

First we replace the variables with their values we know: 45% * 2.5 = y

(we remove the 0 on the end from 2.50 as it is redundant outside of money and this makes calculation a bit easier to read)

Next we need to convert 45% into a decimal, so we divide 45 by 100: 0.45 * 2.5 = y

Then multiply these values: 1.125 = y

We then round 1.125 to the nearest cent, and that finishes part A: We save $1.13

Now, we need to calculate the price we pay for the item, which is much simpler. Let p = the price we end up paying: 2.50 - 1.13 = p

Lastly, we need to subtract those two values: 1.37 = p

Therefore, we pay $1.37 for the item.

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Evaluate 15r -1 when r=5
alukav5142 [94]

Answer:

74

Step-by-step explanation:

You just have to substitute r with 5.

Now, the equation looks like this:

15(5)-1

Next, solve 15*5 first according to PEMDAS

And 15*5 equals 75

\frac{\left[\begin{array}{ccc}1&5\\5\\\end{array}\right] }{75}

Lastly, do 75-1 which equals 74

\frac{\left[\begin{array}{ccc}7&5\\-1\\\end{array}\right] }{74}

Therefore, 74 is your answer.

3 0
2 years ago
What is the slope of the line with these points (5, -3) (6, -1) (7, 1)
ycow [4]

Answer:

4/2

Step-by-step explanation:

Rise/Run

4/2

8 0
3 years ago
Read 2 more answers
What is the height of a rectangular prism that has a volume of 280 cubic meters,a length of 8 meters, and a width of 7 meters? S
lyudmila [28]
When looking at a rectangular prism, we know that Volume = length * width * height

If we are given that the volume of the prism is 280 cubic meters (m^3), the length is 8 meters, and the width is 7 meters, we can fill in our equation.

280 = 8 * 7 * height
280 = 56 * height

Because we are solving for the height, we divide both sides by 56

280/56 = height

height = 5 meters

8 0
3 years ago
Find the area of the shape shown<br> below.
Allisa [31]

Answer:

The area of the figure is 28 units².

Step-by-step explanation:

Find the area of the full rectangle, ignoring the triangle.

a = lw \\ a = 4 \times 8 = 32

Then, find the area of the triangle:

a =  \frac{bh}{2}  \\ a =  \frac{2 \times 4}{2}  \\ a = 4

Finally, subtract:

32 - 4 = 28

7 0
2 years ago
Jenny runs a cake making business.  She receives an order for 6 carrot cakes. Here are the ingredients for 1 carrot cake. How mu
Ivahew [28]
Since the mix ingredient is 1 carrot cake, Jenny is going to need 6 mixed spices for 6 carrot cakes.
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