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xeze [42]
3 years ago
9

Find the percent decreased original price: $40 sale price: $30

Mathematics
1 answer:
stich3 [128]3 years ago
4 0

Answer:

25 percent

Step-by-step explanation:

Percent decrease = (original - new)/original * 100 percent

                              = (40-30)/40 * 100 percent

                              = 10/40 * 100 percent

                              = .25 * 100 percent

                               =25 %

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find two consecutive integers such that their sum equal to the difference of three times the larger and two times the smaller
Evgen [1.6K]

Answer:

Step-by-step explanation:

the larger one far more big other than 0

x=4

3 0
3 years ago
There are 5 teams and thier names are super brains witch has 20 points, space cadets have -25 points, know it all’s have -10, sm
Sophie [7]

Know it all's are beating the space cadets by 15.

Super brain is beating the rockets by 35.

5 0
3 years ago
Write the equation of the line that passes through (4,-3) &amp; (3,0)<br> m =<br> b =<br> y =
bezimeni [28]

Answer:

m = -3

b = 9

y = -3x + 9

Step-by-step explanation:

Let us solve the question

∵ The line passes through points (4, -3) and (3, 0)

∵ The rule of the slope is m = \frac{y2-y1}{x2-x1}

∵ (x1, y1) and (x2, y2) are 2 points on the line

∴ x1 = 4 and y1 = -3

∴ x2 = 3 and y2 = 0

→ Substitute them in the rule of the slope to find it

∵ m = \frac{0--3}{3-4} = \frac{0+3}{-1} = -3

∴ m = -3

∵ The form of the equation of the line is y = m x + b

→ Substitute the value of m in the form of the equation.

∴ y = -3x + b

→ To find b substitute x and y by the coordinates of the point (3, 0) or (4, -3)

∵ x = 3 and y = 0

∴ 0 = -3(3) + b

∴ 0 = -9 + b

→ Add 9 to both sides

∴ 9 = b

∴ b = 9

→ Substitute the value of b in the equation

∵ y = -3x + 9

∴ The equation of the line is y = 3x + 9

7 0
3 years ago
How many different ways can you write a fraction that has a numerator of 2 as a sum of fractions? Explain.
zhenek [66]

Answer:

Step-by-step explanation:

1/5 + 1/5 = 2/5

1/7 + 1/7 = 2/7

1/3 + 1/3 = 2/3

There are an infinite number of these fractions. They must be 1 and 1 in the numerator, and the denominator must be relatively prime  to 2. The examples I have picked are prime in the denominator, but the rule is not without many exceptions. For example

1/9 + 1/9 = 2/9

I don't think you can pick an even denominator because it will reduce when put with two.  Oh wait 2/18 + 2/18 = 4/18 = 2/9 But these could be reduced before adding. Still, it might count. It depends on who is marking the question.

What about an odd and even denominator?

1/9 + 1/18 = 3/18 = 1/6  There must be something that works, but I can't come up with an example.

4 0
3 years ago
"What is the length of stack J K with bar on top ? Round to the nearest tenth of a unit.
Sedaia [141]
Stance formula : d = sqrt (x2 - x1)^2 + (y2 - y1)^2
(3,5)(7,3)
d = sqrt (7 - 3)^2 + (3 - 5)^2
d = sqrt 4^2 + (-2^2)
d = sqrt 16 + 4
d = sqrt 20
d = 4.47....rounded = 4.5
3 0
4 years ago
Read 2 more answers
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