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Marina CMI [18]
3 years ago
8

Solve and graph inequality

Mathematics
1 answer:
alina1380 [7]3 years ago
4 0
Her sister could be about four or five
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Solve using substitution.<br><br> x = –2<br> 5x + 3y = 14
Nookie1986 [14]

Answer:  (-2, 8)

Explanation:

Plug x = -2 into the second equation. Isolate y.

5x+3y = 14

5(-2)+3y = 14

-10+3y = 14

3y = 14+10

3y = 24

y = 24/3

y = 8

We have x = -2 lead to y = 8.

Therefore, the ordered pair (x,y) = (-2,8) is the solution to this system.

4 0
2 years ago
(10 - 2 )^{2} + ( 5 - 10 ÷ 2 )
bixtya [17]

Answer:

64

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

(10 - 2)² + (5 - 10 ÷ 2)

<u>Step 2: Evaluate</u>

  1. (Parenthesis) Divide:                     (10 - 2)² + (5 - 5)
  2. (Parenthesis) Subtract:                  8²
  3. Exponents:                                     64
8 0
2 years ago
Read 2 more answers
Mike can build a go cart in 30 days, Jed can build one in 20 days and Erick in 60 days. If all of them share the work, how quick
Gwar [14]

Answer: 10 days

<u>Step-by-step explanation:</u>

Mike: \frac{x}{30}

Jed: \frac{x}{20}

Erick: \frac{x}{60}

Together: \frac{x}{30} + \frac{x}{20} + \frac{x}{60} = 1

60(\frac{x}{30} + \frac{x}{20} + \frac{x}{60} = 1)

2x + 3x + x = 60

             6x = 60

               x = 10


4 0
3 years ago
Read 2 more answers
4w-3(-5z+2w)-2z
Alekssandra [29.7K]
The answer is 13z - 18
6 0
3 years ago
Read 2 more answers
1. Which is an example of an algebraic expression?<br> 04(3 + 8)<br> 018²<br> 03-a<br> 021.4
mars1129 [50]

Answer:

03-a

Step-by-step explanation:

It's an algebraic expression cuz it has an unknown variable (a)

7 0
1 year ago
Read 2 more answers
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