If you bike for 3 hours at 10 mph and then walk for 1 hour at 2 mph, what would be your average speed? Please explain

2 answers:

6 0

Avg speed=total distance/time
total distance=3*10 miles + 1*2 miles= 32miles.
total time=4hours
avg speed=32/4 miles/hr

Hope this helps!

Katyanochek1 [597]4 years ago

4 0

Ok, so 3 and 10, remember that, then remember 1 and 2. Subtract them both, and that will be your average speed.

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19) Write the slope-intercept form of the equation of the line described by (-4,-5), parallel to y = -2x - 5.

bezimeni [28]

Step-by-step explanation:

Since is it parallel to the given line, we can directly take the slope from the given equation.

m = -2 according to the given equation.

Next, use the point (-4,-5) to write the point-slope form first.

y-(-5) = -2(x-(-4))

Then use basic algebra to put it into slope-intercept form, which is y = mx + b.

y + 5 = -2x - 8

y = -2x - 13

7 0

3 years ago

Can someone help?

schepotkina [342]

One idea is:

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So, that matches ax+b>c in that

a is the hourly earning

b is the initial savings

c is the price of the iphone

5 0

4 years ago

What is the simplest form of x^2+5X-36/x^2-16<br> X+9/X+4<br> 9/4<br> X+9/X-4<br> -9/4

Digiron [165]

Answer:

$\frac{ {x} + 9}{x - 4}$

Step-by-step explanation:

$\frac{ {x}^{2} + 5x - 36}{ {x}^{2} - 16} \\ \\ = \frac{ {x}^{2} + 9x - 4x- 36}{ {x}^{2} - {(4)}^{2} } \\ \\ = \frac{ x({x} + 9) - 4(x + 9)}{ (x + 4)(x - 4) } \\ \\ = \frac{ ({x} + 9) \cancel{(x - 4)}}{ \cancel{(x + 4)}(x - 4) } \\ \\ = \frac{ {x} + 9}{x - 4}$