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Ivahew [28]
3 years ago
10

X(x-1)-x^2+2x=5 :))))))

Mathematics
2 answers:
Zina [86]3 years ago
4 0

Answer:

x(x - 1) -  {x}^{2}  + 2x = 5 \\   {x}^{2}  - x -  {x}^{2}   + 2x = 5 \\  \therefore \: x \:  = 5

AleksAgata [21]3 years ago
4 0

Answer:

x=5

Step-by-step explanation:

x(x-1)-x^2+2x=5

expand by using distributive property

x^2-x-x^2+2x=5

simplify

x=5

check work by substituting 5 into the original equation and simplify

use PEMDAS

5(5-1)-5^2+2(5)=5

5(4)-25+10=5

add and subtract  (left to right)

20-25+10=5

5=5

The equation is true, thus x=5

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The parallelogram below is being covered with carpet. The carpet is priced at $2.80 per square meter. How much will it cost to c
cestrela7 [59]

Answer:

It will cost $79.38 to carpet the shape

Explanation:

Find the diagram of the parallelogram attached

Area of a parallelogram = Base * Height

Given

Base = 8.1m

Height = 3.5m

Area of the parallelogram = 8.1*3.5

Area of a parallelogram  = 28.35m²

Since 1m² = $2.80

28.35m² = x

Cross multiply

x = 28.35 * 2.80

Hence it will cost $79.38 to carpet the shape

5 0
3 years ago
1.2 as a fraction with a denominator of 8
Aleks04 [339]
The answer is 1 whole and 1 /18. Hope this helps!
3 0
3 years ago
If 86 is added to a number the result is 56 less than twice the number, find the exact number, Do not round!
vredina [299]
The number is 142
you first make an equation ;
86+x=2x-56
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7 0
3 years ago
The graph of a function f(x) passes through the following points:
Alex

The function is f(x) = -2x² + 2 if the function f(x) passes through the following points:(0,2), (1, 0), (-1,0)

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We have:

The graph of a function f(x) passes through the following points: (0,2), (1, 0), (-1,0)

Let

f(x) = ax² + bx + c

Plug x = 0, and y = 2

c = 2 ...(1)

Plug x = 1 and y = 0

a + b + c = 0 ..(2)

Plug x = -1 and y = 0

a - b + c = 0  ...(3)

After solving (1), (2), and (3)

a = -2

b = 0

c = 2

f(x) = -2x² + 2

Thus, the function is f(x) = -2x² + 2 if the function f(x) passes through the following points:(0,2), (1, 0), (-1,0)

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

5 0
2 years ago
What is the domain of the function y=√4x+8<br> Can you show your work too, please? (:
kirill115 [55]
y=  \sqrt{4(x+2)}
y = 2 \sqrt{x+2}

The domain would be -2, the x-intercept. 
6 0
3 years ago
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