MATHEMATICS MIDDLE SCHOOL

Find the slope of (0,1) and (2,-3) with this equation

(Y2-Y1)/(X2-X1)

Answers

Answer 1
Answer:

\bf (\stackrel{x_1}{0}~,~\stackrel{y_1}{1})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{-3}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-3}-\stackrel{y1}{1}}}{\underset{run} {\underset{x_2}{2}-\underset{x_1}{0}}}\implies \cfrac{-4}{2}\implies -2
Answer 2
Answer:

Answer: -2

Step-by-step explanation:

-3-1=-4

2-0=2

-4/2=-2

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A square has a side length of 4\19x - 9 units. what is its perimeter in terms of x?a) 4\19x - 36

b) 16\19x-9

c) 16\19x-36

d) 16\19x +36

Answers

16/19 x-36 is the perimeter of square whose side length is 4\19x - 9 units

What is Square?

square, in geometry, a plane figure with four equal sides and four right (90°) angles. A square is a special kind of rectangle (an equilateral one) and a special kind of parallelogram

We need to find the perimeter of square whose side length is 4\19x - 9 units.

Perimeter of square=4a

Where a is length of side

a=4\19x - 9

Perimeter of square=4(4\19x - 9)

Apply distributive property

=16/19 x-36

Hence 16/19 x-36 is the perimeter of square whose side length is 4\19x - 9 units

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The answer is c because you add 4/19x four time because it is a square. That will be 16/19x. Then you add -9 four time for the same reason and end up with -36.

Barbara sells iced tea for $1.49 per bottle and water for $1.25 per bottle. She wrote an equation to find the number of drinks she needs to sell to earn $100.1.25x + 1.49 = 100
What error did Barbara make in writing the equation?

Barbara's equation did not consider the number of water drinks.
Barbara's equation did not consider the number of iced tea drinks.
Barbara's equation did not use the correct price for the iced tea drinks.
Barbara's equation did not use the correct total for sales.

Answers

Barbara's equation did not consider the number of iced tea drinks.
The answer is B, Barbara's equation did not consider the number of iced tea drinks. In the equation, Barbara forgot to put a variable in for the number of iced tea drinks and only put in the price.

Factor each expression 11x+55

Answers

11x+55
= 11x + 11 x 5
= 11(x+5)
11x + 55 = 11(x+5)

Your final answer is 11(x+5).

What is the area of the shaded region to the nearest tenth of a foot?Part a) Explain what formulas you will use to find the area of the shaded area.

Par b) Explain how you find the area of the shaded region. What was your thought process?

Answers

a) The shaded region is that portion of the rectangle that is not in the circle. You need the formulas for the area of a rectangle and a circle.
 Area of rectangle = length*width
 Area of circle = (π/4)*diameter²

b) The figure shows the width of the rectangle is 14 ft, the same as the diameter of the circle. The length of the rectangle is shows as 21 ft. The shaded area is the difference ...
 Shaded Area = Area of rectangle - Area of circle
 Shaded Area = (21 ft)*(14 ft) - (π/4)*(14 ft)²
Evaluating this expression, we have
 Shaded Area ≈ 294 ft² - 153.9 ft² = 140.1 ft²

11 more than five if a certain number is twenty more than 2 times of that number. what is the number?

Answers

11 more than five of a certain number would be written as 5x+11 and it is (means equal to) twenty more than two times that number, which would be 2x+20. So the equation would be
5x+11=2x+20
-2x -2x (get the x's on one side)
3x+11=20
-11 -11 (get the numbers on one side)
3x=9
/3 /3 (divide by 3, so you can get the x by itself)
X=3 (the number is 3)

If a sweater sells for $ 48 after a 25 % markdown what was the original price

Answers

If a sweater sells for $ 48 after a 25 % markdown then the original price

is $64.

What is Percentage?

percentage, a relative value indicating hundredth parts of any quantity.

Let the original price of the sweater be p dollars.

After a 25% markdown, the sweater sells for $48, which means the customer pays 75% of the original price:

75% of p = $48

Converting the percentage to a decimal:

0.75p = $48

Solving for the originalprice:

p = $48 / 0.75

p = $64

Therefore, the original price of the sweater was $64.

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The original orice was $60
How? Well you just have to multiply $48 by 25% (or 0.25) and you get 12.00. Finally you add that to $48 and you get $60
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