If Charlie run 3 yd./s how many miles can Charlie run in an hour

1 answer:

8 0

So how many seconds are in an hour?
60 sec a minute, 60 minutes an hour.
60*60=3600 seconds in an hour.

he can run 3 yards in a second, so 3*3600=10800 yards in an hour.

convert yards to miles= 6.1363636miles

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A company makes and sells customized yard signs. If you order 5 signs, they charge $72 which includes shipping. If you purchase

klemol [59]

The slope is of $13, which means that each new sign costs $13.

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A linear function has the following format:

$y = mx + b$

In which

m is the slope, which is the rate of change, that is, how much y changes when x changes by 1.
b is the y-intercept.

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In the linear function in this problem, we have two points (x,y): (5,72) and (15,202).
The slope is given by the <u>change in y divided by the change in x</u>, thus:

$m = \frac{202 - 72}{15 - 5} = 13$

The slope is of $13, which means that each new sign costs $13.

A similar problem is given at brainly.com/question/24141057

7 0

2 years ago

Use the quadratic formula to solve the equation.<br><br> 4x^2−10x+5=0

finlep [7]

Quadratic formula:

$x=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

What do we have:

a=4

b=-10

c=5

Substitude:

$x=\frac{10±\sqrt{b^{2}-4(4)(5)}}{2(a)}$

Solve:

$x=\frac{10±\sqrt{(-10)^{2}-4(4)(5)}}{2(4)}\\\\x=\frac{10±\sqrt{100-4(20)}}{8}\\\\x=\frac{10±\sqrt{100-4(20)}}{8}\\\\x=\frac{10±\sqrt{100-80}}{8}\\\\x=\frac{10±\sqrt{20}}{8}\\\\x=\frac{10±2\sqrt{5 }}{8}\\\\x=\frac{2(±5\sqrt{5) }}{2(4)}$