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Reptile [31]
4 years ago
9

Help!

Mathematics
1 answer:
cricket20 [7]4 years ago
4 0

Answer:

70% = \frac{70}{100} = \frac{7}{10} = 0.7

20% = \frac{20}{100} = \frac{1}{5} = 0.2

Step-by-step explanation:

We know that x% is represented by the fraction \frac{x}{100}.

Now, in the first part, we are given two percentages 75% and 70%.

Now, 75% = \frac{75}{100} = 0.75

and 70% = \frac{70}{100} = \frac{7}{10} = 0.7

Therefore, the second option is correct.

Again, in the second part, we are given two percentages 20% and 25%.

Now, 20% = \frac{20}{100} = \frac{1}{5} = 0.2

and 25% = \frac{25}{100} = \frac{1}{14} = 0.25

Therefore, the third option is correct. (Answer)

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2/3 x 1/4 please answer NOW ( brainliest to whoever answers first!!!
alexandr402 [8]
1/6 because 2•1=2 and 3•4=12 and 2/12=1/6
8 0
2 years ago
Read 2 more answers
the base of a right triangle is (x-5). The height of the triangle is (2x+1). The perimeter of the triangle is (7x+5). Find the a
Dovator [93]

Answer:

Area: (x^2)-(9x/2)-2                3rd side=4x+9

Step-by-step explanation:

First, let's find the third side. If all of the sums add up to 7x+5, then we can easily subtract the two sides that we do have.

2x+1+x-5=3x-4

Now, you have to ask yourself what added to 3x-4 can be equal to 7x+5.

It's 4x+9 because we combine like terms. That's the third side. Now, we should follow the formula for getting the area of triangle using the side lengths:

(2x+1)(x-5)/2=area of triangle

2x*x=2x^2

2x*-5=-10x

x*1=x

-5*1=-5

Now the total is 2x^2-9x-4 when you continue to combine like terms. Now all we have to do is divide by 2. So, the area is 2x^2-9x-4/2. You can simplify that. Answer is up top.

7 0
3 years ago
In a market a $50 dress is marked. It says "Save 25%." What is the discount? What is the sale price of the dress?
ehidna [41]

Answer:

$ 37.5

Step-by-step explanation:

It is given :

Price of the dress in the market = $ 50

The shopkeeper a discount percentage = 25%

Therefore the discount amount is = 25 % of 250

                                                         $=\frac{25}{100}\times 50$

                                                         = 12.5

Therefore the sale price of the dress is =  50 - 12.5

                                                                  = 37.5

Therefore the sale price is $ 37.5

5 0
3 years ago
What is the equation of a line that passes through the point (2, 4) and has a y-intercept at y = -10?
Gemiola [76]

Answer:

The equation of the line is y = 7x - 10

Step-by-step explanation:

* Lets revise the form of the equation

- The form of the equation of a line is y = mx + c , where m is the slope

  of the line and c is the y-intercept

- The y-intercept means the line intersect the y-axis at point (0 , c)

- The slope of the line which passes through points (x1 , y1) , (x2 , y2)

 is m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

* Lets solve the problem

∵ The y-intercept is y = -10

∴ The line intersects the y-axis at point (0 , -10)

∵ The line passes through the points (2 , 4) and (0 , -10)

- Lets find the slope of the line using the rule of the slope above

∵ m=\frac{-10-4}{0-2}=\frac{-14}{-2}=7

∴ The slope of the line is 7

∵ c is the y-intercept

∵ The y-intercept is y = -10

∴ c = -10

∵ y = mx + c

∴ y = 7x + -10

∴ y = 7x - 10

* The equation of the line is y = 7x - 10

8 0
4 years ago
What is 4X + 1/2(4X +6)=12
beks73 [17]

Answer:

x = 3/2

Step-by-step explanation:

4X + 1/2(4X +6)=12

Distribute

4x+2x+3 = 12

6x +3 = 12

Subtract 3 from each side

6x+3-3 = 12 -3

6x = 9

Divide each side by 6

6x/6 = 9/6

x = 3/2

7 0
3 years ago
Read 2 more answers
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