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3 years ago

A $50 computer program is on sale for $37.50. What is the percent decrease?

2 answers:

5 0

The price of the computer program is 50 dollars.Since, it is on sale, the current price is now 37.50 dollars.Base on the given choices or options, let's find out which is correct.But, first let's solve this to be able to identify which one is the correct answer:=> 37.50 dollars / 50 dollars = 0.75=> 0.75 * 100% = 75%=> 100% - 75% = 25%.Thus, the discount percentage is 25% and the current price is 75%.

inessss [21]3 years ago

3 0

If you would like to know what is the percent decrease, you can calculate this using the following steps:

x% of $50 is $37.50
x% * 50 = 37.50
x/100 * 50 = 37.50 /*100/50
x = 37.50 * 100 / 50
x = 75%

100% - 75% = 25%

The correct result would be D. 25%.

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X - y = 2 4x – 3y = 11

swat32

Answer:

For x - y = 2

You need to find x or y in one of the equations and then substitute that into the other.

So we have;

x-y=2

4x-3y=11

We will take the first equation and find x;

x-y=2

add y to both sides;

x-y+y=2+y

x=2+y

Now we take that answer and substitute it forx in the other equation;

4(2+y)-3y=11

8+4y-3y=11

8+y=11

y=3

Now we have what y equals, so we use it in the first equation to find x;

x-3=2

x=5

So we have;

x=5; y=3

Hope you understand!

And for 4x – 3y = 11

Multiply the first equation by 2 and the second by 3 so that there are the same number of y's in each:

8x - 6y = 22 ...(3)

30x + 6y = -3 ...(4)

Now add (3) and (4) term by term:

38x + 0 = 19

38x = 19

or x = 1/2

Put this back into equation (1)

4*(1/2) - 3y = 11

2 - 3y = 11

Subtract 2 from both sides:

-3y = 9

Divide both sides by -3

y = -3

6 0

3 years ago

Read 2 more answers

What is the surface area of a cone that has a radius of 8 feet and a slant height of 12 feet? (Use 3.14 for π.)

kodGreya [7K]

Answer:

Surface area of cone is $502.4\ ft^2$

Step-by-step explanation:

Given:

radius of a cone (r) = 8 feet

slant height of cone (l) = 12 feet

We need to find the surface area of cone.

Total surface area of cone = Area of circle $+$ Area of curved surface

Now we know that,

Area of circle = $\pi r^2$

Area of curved surface = $\pi rl$

Hence Total surface area of cone = $\pi r^2+\pi rl=\pi r(r+l) = 3.14 \times 8 (8+12)=3.14\times8\times20= 502.4 \ ft^2$

Surface area of cone is $502.4\ ft^2$ .

4 0

3 years ago

Round 877.71 to the nearest tenth

Rainbow [258]

The 7 after the decimal is in the tenths place, so look at the one in the hundredths place. It is less than 5, so the 7 is not rounded up and stays 7. 877.7 is 877.71 rounded to the nearest tenth.

4 0

3 years ago

Read 2 more answers

MATH EASY PLEASE PLEASE HELP ME

BaLLatris [955]

Answer:

Step-by-step explanation:

3 0

3 years ago

a train is traveling from New Orleans to Memphis at a constant speed of 79 miles per hour.New Orleans and Memphis are 395.1 mile

alexdok [17]

Just use the formula time = distance / speed

395.1/79= 5.001

It will take the train approximately five hours to reach Memphis

5 0

3 years ago