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Simora [160]
3 years ago
13

Evaluate the expression when x=20, y=4, and z=7. 3z+8

Mathematics
2 answers:
Fynjy0 [20]3 years ago
7 0
The correct answer is 29.
Finger [1]3 years ago
3 0

Answer:

3z+8

3(7)+8

21+8

29 is your answer ☺️☺️☺️

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3x+5=12-7x solve? Help ​
horsena [70]

Answer:

3x + 5 = 12 - 7x

⇒ 3x = 12 - 5 - 7x

⇒ 3x = 7 - 7x

⇒ 3x + 7x = 7

⇒ 10x = 7

⇒ x= 7 ÷ 10

⇒<u> x = 0.7</u>

8 0
2 years ago
Multiply 5(−37). Simplify your answer.
crimeas [40]
-2 1/7 is the correct answer.
5 0
3 years ago
Read 2 more answers
X + 4y = 16<br> -X + 3y = -2 ​
jeyben [28]

Answer:

(8, 2 )

Step-by-step explanation:

Given the 2 equations

x + 4y = 16 → (1)

- x + 3y = - 2 → (2)

Adding the 2 equations term by term will eliminate the x- term

0 + 7y = 14

7y = 14 ( divide both sides by 7 )

y = 2

Substitute y = 2 into either of the 2 equations and solve for x

Substituting into (1)

x + 4(2) = 16

x + 8 = 16 ( subtract 8 from both sides )

x = 8

solution is (8, 2 )

7 0
3 years ago
Which answer do I pick .
Jobisdone [24]
I don’t think you pick an answer you just put all of those formulas and solutions into your calculator and that will give you what you need to move onto the next question/ step
5 0
3 years ago
If f(x)= x2 + 2x - 6 and g(x)= 3x2 - 5x - 7, find f(x)-g(x).
dezoksy [38]

Answer:

- 2x² + 7x + 1

Step-by-step explanation:

f(x) - g(x)

= x² + 2x - 6 - (3x² - 5x - 7) ← distribute parenthesis by - 1

= x² + 2x - 6 - 3x² + 5x + 7 ← collect like terms

= - 2x² + 7x + 1

8 0
3 years ago
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