2 years ago

Lauren jogs at a rate of 2 miles every 2/5 hour. What is her unit rate ?

2 answers:

6 0

0.8 miles per hour
THE WORK
2 miles ÷ 2.5
--------------
2.5 hours ÷ 2.5
=
0.8 miles
------------------
1 hour

slamgirl [31]2 years ago

5 0

You times 2/5 and 2 then you will get the answer

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The sum of five times a number and -6 is -2

k0ka [10]

5n + (-6) = -2
add 6 to -2
5n = -2 + 6
5n = 4
divide both sides by 5
n = 4/5

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2 years ago

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You have $5,000 to invest for ten years. The Bank pays simple interest at an annual rate of 5%. Calculate your balance after 10

Mazyrski [523]

Answer: $7,500

Step-by-step explanation:

Use the formula: SI = P(1 + rt)

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Neko [114]

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2 years ago

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By definition of covariance,

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$\mathrm{Cov}(X,Y)=\mathbb E[XY-\mathbb E[X]Y-X\mathbb E[Y]+\mathbb E[X]\mathbb E[Y]]=\mathbb E[XY]-\mathbb E[X]\mathbb E[Y]$

We have

$\mathbb E[(aX-b)(cY-d)]=\mathbb E[acXY-adX-bcY+bd]$

$=ac\mathbb E[XY]-ad\mathbb E[X]-bc\mathbb E[Y]+bd$

$\mathbb E[aX-b]=a\mathbb E[X]-b$

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Putting everything together, we find the covariance reduces to

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2 years ago

Which function rule represents the best line of fit for the data in the plot?

viva [34]

Answer:

f(x) = -1/2x + 8

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Step-by-step explanation:

hope this helps

have a good day

6 0

1 year ago