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2 years ago

11

A dozen fidget spinners cost 9.60 what is the unit rate of the spinners

1 answer:

Serggg [28]2 years ago

8 0

80 cents. To find the unit rate you need to know how much 1 fidget spinner costs, when all the fidget spinners cost the same amount. To this you have to divide 9.6 (total cost) by 12 (total # of fidget spinners). You get .8 (the cost of 1 fidget spinner).

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Gala2k [10]

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2 years ago

A student bought 34 pencils for school.If he sharpened 16 of the pencils before school, what is his ratio of un-sharpened pencil

Diano4ka-milaya [45]

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3 years ago

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Events X and Y are independent. The probability of X occurring is 1/3 . The probability of Y occurring is 1/2 . What is P(X and

Step2247 [10]

For independent events $X,Y$ , $\mathbb P(X\cap Y)=\mathbb P(X)\times\mathbb P(Y)$ .

So

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3 years ago

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What is the slope of <br><br> 12y=(-24)x

White raven [17]

Answer:

-2

Step-by-step explanation:

First, solve so that y is alone on its side of the equation by dividing both sides of the equation by 12.

12y=(-24)x

y=(-2)x

Therefore, the slope must be -2.

4 0

3 years ago

John is driving around town. When he reaches the gas station, he notes that he has traveled 20 miles. He reaches home 2 hours la

Troyanec [42]

Answer:

$d=5t+20$

Step-by-step explanation:

The equation that will model this situation will be of the form

$d=mt+b$

where $t$ is the time in hours john has traveled since the gas station, and $d$ is the distance.

Now we know that John has already traveled 20 miles when he is at the gas station, this means at $t=0$ , $d=20$ ; or

$20=m(0)+b$

$\boxed{b=20}$

Thus we have

$d=mt+20$ .

Now we need to figure out $m.$

When John reaches home 2 hours later he notes that he has traveled 30 miles, which means he has traveled 30 - 20 = 10 miles; thus we have

$m= \frac{\Delta d}{\Delta t} =\frac{10 miles}{2hours} =5$

$\boxed{m=5}$

Now we have the full equation:

$\boxed{d=5t+20}$

8 0

2 years ago