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4 years ago

Eighty percent of a number.?as a alegrabatic expression.

Mathematics

1 answer:

Andrews [41]4 years ago

6 0

Answer:

$\frac{4}{5} x$

$0.8x$

Step-by-step explanation:

$80\% \: of \: x = \frac{80}{100}x \\ \frac{80}{100} x = \frac{8}{10}x = \frac{4}{5} x = 0.8x$

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Jake paints all sides except the bottom of the box length=20cm width=15cm height=12

Crazy boy [7]

Answer:

Area Painted = (2*12*15) + (2*20*12)

Step-by-step explanation:

If you imagine a box, you know that the bottom area would be found by multiplying the length by the width. Thus, the only other area you want to find are the sides of the box. I multiplied the length and the height as well as the width and the height. I multiplied that by 3 because there's two sides that are always going to be the same. I recommend you draw a picture before attempting to write an expression,

Hope this helped :)

6 0

4 years ago

2a+2b-2ab+y=6<br><br> I REALLY NEED HELP

Orlov [11]

This is how to solve this

6 0

4 years ago

An office supply company orders packs of pens for two of its stores. For the first store, the order is for 60 packs of ballpoint

AlekseyPX

Answer:

Option A. The cost of one pack of ballpoint pens is $3 and the cost of one pack of gel pens is $7.

Step-by-step explanation:

Let

x -----> the cost of one pack of ballpoint pens

y -----> the cost of one pack of gel pens

we know that

60x+25y=355 -----> equation A

120x+30y=570 -----> equation B

Solve the system of equations by graphing

Remember that the solution of the system is the intersection point both graphs

The solution is the point (3,7)

see the attached figure

therefore

The cost of one pack of ballpoint pens is $3

The cost of one pack of gel pens is $7

5 0

3 years ago

A swing forward 50 degree and back 95 degree. How many degree forward must the swing go to return in starting position

-Dominant- [34]

Answer:

45°.........................

4 0

3 years ago

Solve for the <br> variable 8=2(x-5)+6x

shutvik [7]

Answer:

x=2.25

Step-by-step explanation:

8=2(x-5)+6x
8=2x-10+6x
8+10=2x+6x
18=8x
18/8=x
2.25=x

5 0

3 years ago