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-BARSIC- [3]
3 years ago
10

Pictures below. Find x.

Mathematics
1 answer:
denis-greek [22]3 years ago
8 0
Hope this helps u...!!

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Plz help I'm just having a brain fart right now<br><br>​
Wittaler [7]

Answer:

x=11

Step-by-step explanation:

For extra help the second answer is: 7a(3-a)

4 0
3 years ago
Rooter Plus charges a $25 service fee plus $40 per hour of work done. Is this a proportional or non-proportional relationship?
Dominik [7]

Answer:

Non-proportional; the rate of change is $40/hour

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line <u>and the line passes through the origin</u>

Let

x -----> the number of hours

y ----> The total charge in dollars

The equation of the line in slope intercept form is equal to

y=mx+b

where

m is the slope

b is the y-intercept

we have

m=40\ \$/h\\b=\$25

substitute

y=40x+25

This relationship is not proportional, because the line not passes through the origin

therefore

Non-proportional; the rate of change is $40/hour

5 0
3 years ago
A used car has a value of $15,250 when it is purchased in 2012. The value of the car decreases at a rate of 7.5% per year. Write
horrorfan [7]
7.5% is 3/40. The equation is y=15250(1-3/40)ˣ=15250(37/40)ˣ.
When x=8 this becomes $8173.42.
3 0
3 years ago
The table shows the relationship y = kx.
astra-53 [7]
Answer is B hope this helps
5 0
3 years ago
Use the points in the figure to name the diagram.
Alex73 [517]

Answer:

CD ->

Step-by-step explanation:

The arrow is only pointing to one side  of the diagram.

hope you get it right!

8 0
2 years ago
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