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katen-ka-za [31]
3 years ago
8

Evaluate the expression 9z – 4 for z = 3.

Mathematics
2 answers:
Juli2301 [7.4K]3 years ago
7 0
9(3)-4
27-4
3 your answer is 3
Sonja [21]3 years ago
4 0

Answer:

27 is the final answer

Step-by-step explanation:

9z-4=

9(3)-4=

27-4=

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what is an equation of the line that s perpendicullar to y-3=-4(x+2) and passes through the point (-5,7)
Sidana [21]

Answer:

4y=x+33

y=x/4+33/4 (slope-intercept form)

Step-by-step explanation:

y-3 = -4(x+2)

y-3 -4x-8

y= -4x-8+3

y= -4x-5

m1 = -4

For perpendicularity

m2= -1/-4 = 1/4

The equation is

y-y1 = m2(x-x1)

y-7 = 1/4(x-(-5))

y-7 = x/4+5/4

Multiply through by 4

4y-28=x+5

4y=x+5+28

4y=x+33

Divide through by 4

y=x/4+33/4 (slope-intercept form)

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3 years ago
Which ratio correctly compares 60 mm to 45 cm?
Agata [3.3K]
60 mm converts to 6 centimeters.
the ratio of 6 to 45 can be simplified to 
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8 0
3 years ago
Calculate how many cups of butter your new recipe will need.
kherson [118]
The answer to your question is 3
7 0
2 years ago
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Juan's pit crew was able to get his car back onto the racetrack 0.4 seconds faster than Paul's crew. Paul's crew took 1.3 second
9966 [12]

Answer:

6.7 seconds

Step-by-step explanation:

Juan= Paul-0.4

Paul=Terry+1.3

We can substitute Terry+1.3 for Paul since they are equal

juan=(Terry-0.4)+1.3

terry=5.8

juan=(5.8-0.4)+1.3

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X= 25.65 + 16.5 - 12.45
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3 years ago
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