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weeeeeb [17]
2 years ago
14

Calculate the slope of the trend line Please... :(

Mathematics
1 answer:
Ganezh [65]2 years ago
7 0

Answer:

Slope is .18

Step-by-step explanation

Find two points along the line.

Calculate slope using \frac{y2-y1}{x2-x1}.

I used the points (1985, .21) and (1990, .30).

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a gas station sells regular gas for $2.10 per gallon and premium gas for $2.90 a gallon. at the end of a business day 280 gallon
insens350 [35]

200 gallons of regular gas and 80 gallons of premium gas were sold.

Let the amount of regular gas sold be x gallons. So, the amount of premium gas sold will be (280 - x).

Now, forming the equation using the given information, to find the amount of each type of gallon.

Equation -

2.10x + 2.90(280 - x) = 652

Performing multiplication with values inside bracket in Left Hand Side

2.10x + 812 - 2.90x = 652

Rewriting the equation -

812 - 652 = 2.90x - 2.10x

Performing subtraction

160  = 0.8x

Rewriting the equation according to x

x = 160÷0.8

Performing division to find the value of x

x = 200

So, 200 gallons of regular gas was sold.

Amount of premium gas sold = 280 - 200

Performing subtraction

Amount of premium gas sold = 80 gallons

Hence, 200 gallons of regular gas and 80 gallons of premium gas was sold.

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C

Step-by-step explanation:

43.5 x 10 = 435

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