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Arada [10]
3 years ago
12

2x-5/5 +x-2=3(x+5). Find the value of x?

Mathematics
1 answer:
deff fn [24]3 years ago
5 0

Answer:

Step-by-step explanation:

\frac{2x - 5}{5} + x - 2 = 3(x + 5)

\frac{2x - 5}{5} + x - 2 = 3x + 15

\frac{2x - 5}{5} = 2x + 17

2x - 5 = 10x + 85

-8x = 90

x = \frac{-45}{4}

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Find the slope of the line of (4,3) (1,-4)
deff fn [24]

Answer: -7/-3.

Step-by-step explanation: In this problem we're asked to find the slope of the line that passes through the points (4,3) and (1,-4).

Using our slope formula, we take the second y minus the first y which in this case is -4 - 3 over our second x minus our first x which in this case is 1 - 4.

-4 - 3 is -7 and 1 - 4 is -3.

So the slope of this line is -7/-3.

7 0
4 years ago
Read 2 more answers
Question 7: Find the value of x. The numbers below are in degrees.<br> 140<br> S<br> 50<br> 20
Lyrx [107]

Given:

A figure.

To find:

The value of x.

Solution:

Draw two parallel lines as shown in the below figure.

If a transversal line intersect two parallel lines, then alternate interior angles are same.

a=20              (Alternate interior angle)

d=b              (Alternate interior angle)           ...(i)

The value of angle d is

d=50-a

d=50-20

d=30

Using (i), we get

b=30

If a transversal line intersect two parallel lines, then same sides interior angles are supplementary angles.

c+140=180

c=180-140

c=40

Now,

x=b+c

x=30+40

x=70

Therefore, the value of x is 70.

8 0
3 years ago
A half + a quarter , HELP PLZ RNN
AfilCa [17]

Answer:

Three quarter

Step-by-step explanation:

;]

8 0
3 years ago
Read 2 more answers
What is the difference?
Whitepunk [10]

Answer:

\frac{x^2+3x  -12}{(x-5) (x +3)(x+7)}

Step-by-step explanation:

Given

\frac{x}{x^2-2x-15} - \frac{4}{x^2+2x-35}

Required

Calculate the difference

We start by factorizing the denominator of both fractions

\frac{x}{x^2-2x-15} - \frac{4}{x^2+2x-35}

\frac{x}{x^2+3x - 5x -15} - \frac{4}{x^2+7x - 5x-35}

\frac{x}{x(x+3) - 5(x +3)} - \frac{4}{x(x+7) - 5(x+7)}

\frac{x}{(x-5) (x +3)} - \frac{4}{(x-5)(x+7)}

Take LCM

\frac{x(x+7) - 4(x +3)}{(x-5) (x +3)(x+7)}

Open Brackets

\frac{x^2+7x - 4x -12}{(x-5) (x +3)(x+7)}

\frac{x^2+3x  -12}{(x-5) (x +3)(x+7)}

This can't be simplified any further;

4 0
3 years ago
Anmol got 60 marks out of 80 marks in mathematics what percent marks did he get​
Kay [80]

Answer:

75%

Step-by-Step Explanation:

There are two ways to go about this.

1) We can simply put it as a fraction = 60/80.

  Then since a fraction sign also means division, we divide 60 by 80 = 0.75

  Then to change a decimal into a percentage, we multiply by 100% = 75%

  So our answer is 75%

2) We can simply it after it is put into a fraction = 60/80 = 3/4

   It should be common knowledge that 3/4 is 75% depending on what                 grade you are in.

But there you have it, whichever way you prefer, the answer is always 75%.

3 0
3 years ago
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