2 years ago

Does y=7x represent a proportional relationship? Help me please thanks.

Mathematics

1 answer:

noname [10]2 years ago

7 0

Answer: Yes because it will stay proportional the whole time. 1:7, 2:14, 3:21...

Hope this helps!

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What is the slope of a line that contains the points (1 -2) and (4, -3).

Naddika [18.5K]

Answer:

$-\frac{1}{3}$

Step-by-step explanation:

Use the definition of slope:

$m=\frac{y_2-y_1}{x_2-x_1}\\$

Replace the values in the equation and solve:

$m=\frac{-3-(-2)}{4-1} \\m=\frac{-1}{3}\\m=-\frac{1}{3}$

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1 year ago

Manuel drove 180 miles in 3 hours.What was his average rate?

nikdorinn [45]

Answer: 60 MPH

Step-by-step explanation:

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2 years ago

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Write an equation of the line that passes through (2, -3) and is perpendicular to the line y=-2x-3

Natalija [7]

Answer:

$y=\frac{1}{2} (x-2)-3$ or $y=\frac{1}{2} x-4$

Step-by-step explanation:

The perpendicular slope is the opposite-reciprocal of the original slope:

Perpendicular slope of -2 is $\frac{1}{2}$

Write the equation in point-slope form ( $y=a(x-h)+k$ ):

$y=\frac{1}{2} (x-2)-3$

Convert to slope-intercept form if needed:

$y=\frac{1}{2} x-1-3$

$y=\frac{1}{2} x-4$

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2 years ago

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Sasha can run at an average speed of 934 9 3 4 min/mi. She runs at this speed for 6814 68 1 4 min. How many miles does Sasha run

lutik1710 [3]

I don't know what the spaces are meant for but I think that means 934 and 6814 only. Another point is, speed should be expressed in units of distance over time. So that would be miles/min.

So, distance could be calculated by multiplying speed and time.

d = 934 mi/min * 6814 min
d = 6,364,276 miles

8 0

2 years ago

For this problem what I did was that I multiplied 100 x 34 = 3,400 and subtracted that answer with 5,086. The answer I got was 1

inessss [21]

Answer:

The answer rounded to the nearest whole number is 1729

Step-by-step explanation:

Set it up like this: Percent in fraction form = x over total

So: 34/100 = x/5086

You then multiply: 34 x 5086 = 172924

Then divided that number by 100: 172924 divided by 100 = 1729.24

Then round the number to the nearest whole number: 1729

Hope this helps good luck!

3 0

1 year ago