Answer:
-4
Step-by-step explanation:
y=mx+b
b is the y intercept
So the ratios would look like this:
2.394 inches : 1 minute
x inches : 7.489 minutes
You need to do this: 7.489*1*2.394.
= 7.489*2.394
≈ 17.929 inches.
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Answer:
1 notebook=$30.7
1 thumb drive =$12.2
Explanation:
Let x represent the number of notebooks and y represent the number of thumb drives.
4x+5y = $116 ................1
2x+3y = $68..................2
4x+2x=$116+$68
6x=184
![\frac{6x}{6} = \frac{184}{6} \\ \\ x = \frac{92}{3}](https://tex.z-dn.net/?f=%20%5Cfrac%7B6x%7D%7B6%7D%20%3D%20%20%5Cfrac%7B184%7D%7B6%7D%20%5C%5C%20%20%5C%5C%20x%20%3D%20%20%5Cfrac%7B92%7D%7B3%7D)
Therefore, the cost of each notebook=30.66
=$30.7
2x+3y=$68
2(30.7)+3y =$68
$31.4+3y=$68
3y=$68 - $31.4
3y=36.6
![\frac{3y}{3} = \frac{36.6}{3} \\ y = \frac{36.6}{3} = 12.2](https://tex.z-dn.net/?f=%20%5Cfrac%7B3y%7D%7B3%7D%20%3D%20%20%5Cfrac%7B36.6%7D%7B3%7D%20%20%5C%5C%20y%20%3D%20%20%5Cfrac%7B36.6%7D%7B3%7D%20%20%3D%2012.2)
Therefore, the cost of each thumb drive = $12.2
Proof
2(30.7)+3(12.2)=$68
31.4+36.6=$68.0
Answer:
20x
Step-by-step explanation:
A certain map scale in which 1/2 inch on the map represents an actual distance of 10 miles. A distance of x miles is represented by how many inches on this map?
From the above question:
1/2 inch = 10 miles
x inches = m
Cross Multiply
1/2m = 10x
m = 10x ÷ 1/2
m = 10x × 2
m = 20x