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3 years ago

Don’t get it help me !

Mathematics

1 answer:

photoshop1234 [79]3 years ago

8 0

Answer:

a > 12

Step-by-step explanation:

To ride the go karts you need to be OVER 12 years old. We are going to use < and > because you can't be 12 and younger. The hint is OVER because this essentially means that the variable a HAS to be bigger than 12. Thus is why the ineuality is a > 12.

Best of Luck!

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VLD [36.1K]

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3 years ago

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For the data set: {1.5, 2.3, 1.7, 3.6, 2.9, 4.2}, identify the percentile for the value 2.9.

antiseptic1488 [7]

Answer:

58.33%.

Step-by-step explanation:

We have been given a data set {1.5, 2.3, 1.7, 3.6, 2.9, 4.2} and we are asked to find the percentile for value 2.9.

First of all let us arrange our data points from smallest to largest as: {1.5, 1.7, 2.3, 2.9, 3.6, 4.2}.

We can see that our data set has 6 data points and 2.9 is 4th data point.

We will use percentile rank formula to solve our problem.

$P=\frac{(100*(i-0.5))}{n}$ , where,

P= Percentile rank,

i= Rank of the data point,

n = Total number of data points.

Upon substituting our given values we will get,

$P=\frac{(100*(4-0.5))}{6}$

$P=\frac{(100*3.5)}{6}$

$P=\frac{350}{6}$

$P=58.333$

Therefore, percentile rank for the value 2.9 is 58.33%.

3 0

3 years ago

Light travels about 3 x 10^5 metres per second. Find the time it takes to travel 1 metre. Give your answer in standard form.

Anna71 [15]

Answer:

t=3.3* $10^{-6}$

Step-by-step explanation:

t= $\frac{S}{v}$

S=1m

v=3* $10^{5}$ ms^-1

t= $\frac{1}{3*10^{5} }$

t=3.3* $10^{-6}$

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3 years ago

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Find the slope pf the line on the grap (-2,2),(4,0) reduce all fractional answers to the lowest term.

wariber [46]

Hey there! :)

We're trying to find the slope of the line on the graph (not given, but that's okay). We're given the points (-2, 2) and (4, 0).

Using the slope equation, we simply just have to plug our points in and boom - there's your slope!

Slope equation : m = y₂ - y₁ / x₂ - x₁

Now, using our given points, we can very simply plug everything in! :)

Now, in case you didn't know which number aligns with which variable, I'll go ahead and help you out with this.

x₁ = -2 , x₂ = 4 , y₁ = 2 , y₂ = 0

Now, let's plug and chug!

m = (0 - 2) / (4 - (-2))

Simplify.

m = -2 / 4 + 2

Simplify.

m = -2 / 6

Simplify.

m = -1/3

So, our slope is -1/3.

~Hope I helped!~

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3 years ago