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Zigmanuir [339]
3 years ago
13

Simplify 22 + 6(3) – 7 and 5x − 2y + 3z − 2x − y + 4z

Mathematics
1 answer:
sergey [27]3 years ago
6 0

22+6(3)-7=22+18-7=40-7=33


5x-2y+3z-2x-y+4z\qquad|\text{combine like terms}\\\\=(5x-2x)+(-2y-y)+(3z+4z)=3x-3y+7z

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Look at the picture pleaseeeee
ruslelena [56]

Step-by-step explanation:

the answer is in the picture

7 0
2 years ago
What is 20/-12 as a mixed number
kompoz [17]

if we divide 20 by 12, we get a quotient of 1, and a remainder of 8.

\bf -\cfrac{20}{12}\implies -\stackrel{quotient}{\text{\huge 1}}\frac{\stackrel{remainder}{8}}{12}\implies -1\frac{8}{12}

5 0
4 years ago
Please could you explain this step by step I’m really stuck.
allochka39001 [22]

Answer:

x = -2.5
x = 2

Step-by-step explanation:

Hello!

We can remove the denominators by multiplying everything by it.

Solve:

  • \frac{5}{x + 3} + \frac4{x + 2} = 2
  • 5 + \frac{4(x + 3)}{x + 2} = 2(x + 3)
  • 5 + \frac{4x + 12}{x + 2} = 2x + 6
  • 5(x + 2) +4x + 12 = (2x + 6)(x + 2)
  • 5x + 10 + 4x + 12 = 2x^2 + 6x + 4x + 12
  • 9x + 22 = 2x^2 + 10x + 12

Let's make one side equal to 0.

  • 0 = 2x^2 + x - 10

Solve by factoring, and then the zero product property.

  • 0 = 2x^2 + x - 10\\

Multiply 2 and -10. You get -20. Think of two number that multiply to -20, and add to 1. If we think about the standard form of a quadratic, ax^2 + bx + c, think two numbers that equal "ac" and add up to "b".

  • 0 = 2x^2 - 4x + 5x - 10
  • 0 = 2x(x - 2) + 5(x - 2)
  • 0 = (2x + 5)(x - 2)

Using the zero product property, set each factor to 0 and solve for x.

  1. 2x + 5 = 0
    2x = -5
    x = -5/2 = -2.5
  2. x - 2 = 0
    x = 2

The two answers are x = -2.5, and x = 2.

3 0
2 years ago
Read 2 more answers
HELLLLLLLLLLLLP? BRAINLIST WILL BE REWARDED
erastovalidia [21]

Answer:

113.09734

Step-by-step explanation:

A=πr2=π·62≈113.09734

Hope this helps

plz like and brainly :D

6 0
2 years ago
How can adding doubles help you multiply by 2? give an example
Anuta_ua [19.1K]
It helps you multiply by two by giving you the answer to the expression.
Example: 2•5=10/
8 0
3 years ago
Read 2 more answers
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