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Alekssandra [29.7K]
3 years ago
10

The function y varies directly as x, and y = 81 when x = 45. What is the value of x when y = 18?

Mathematics
1 answer:
NikAS [45]3 years ago
7 0

Answer:10

Step-by-step explanation:

9/5=18/x

90=9x

X=10

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aalyn [17]
7/8a=42
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a=48
5 0
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Read 2 more answers
Genevieve uses 6.5 pints of blue paint and white paint to paint her bedroom walls. 1 4 of this amount is blue paint, and the res
natka813 [3]

Answer:

3/4 = 16/x. Step-by-step explanation: Set up the original ratio: 3:4 (a.k.a. 3/4 or 3 to 4) Because 16 correlates to red paint and 3 correlates to red paint the will be in the same location (as the numerator or denominator).. Also, the amount of blue paint is unknown so that is x.4 also represents blue paint, so 4 and x will also be on the same level (as the numerator of denominator).

Step-by-step explanation:

3 0
3 years ago
Please show steps when solving this.
defon

\frac{240 inches}{1 minute}

We're going to change one unit at a time. Let's start with inches to feet. There are 12 inches in 1 foot. Divide 240 by 12 or multiply by 1/12.

\frac{240 inches}{1 minute} * \frac{1 foot}{12 inches}=\frac{20 feet}{1 minute}

Next, let's do the time using the same idea. Remember that there are 60 minutes in 1 hour.

\frac{20 feet}{1 minute} * \frac{60 minutes}{1 hour} = \frac{1200feet}{1hour}

Answer: 1200 feet per hour

Hope this helps!

7 0
2 years ago
Image. please help!!​
dem82 [27]

Answer:

Step-by-step explanation:

not sure sorry

5 0
3 years ago
........I need help! Thanks in advance
Misha Larkins [42]
You can find the slope using the points.
9-18          -9         9
--------- = ------- = -------
-14+10     -4          4
Next, you can find the equation of the line.
y-9=9/4(x+14)
y=9/4x+40.5
Plug in 0 for x.
y=9/4(0)+40.5
y=40.5
So, the y-intercept is (0,40.5)
Plug in 0 for y.
0=9/4x+40.5
-40.5=9/4
x=-18
So, the x intercept is (-18,0)
I hope this helps!
8 0
3 years ago
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