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faltersainse [42]
3 years ago
9

Jacob earns $19.00 for walking 4 dogs. How much money would he earn for walking 7 dogs? Walking 8 dogs? 1 dog?

Mathematics
1 answer:
VMariaS [17]3 years ago
7 0

Answer:

$19.00 = 4x

Divide 4 on both sides

4.75 = x He ears $4.75 for one dog

$4.75(x)

$4.75(7 dogs)

= $33.25

--------------

$4.75(x)

$4.75(8 dogs)

= $38

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What is the surface area of the rectangular prism described by the net below?
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Answer:

758

Step-by-step explanation:

758 is the answer sheesh

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2 years ago
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5u − –20u − u − 18u + –11u = 10<br> HURRRY PLEEEEESEEEE I ONLY HAVE 4 minutes left
drek231 [11]
5u - (-20u) - u - 18u + (-11u) = 10
5u + 20u - u - 18u - 11u = 10
-5u = 10
-5(-2) = 10

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2 years ago
Emily worked 4/5 of her normal 40 hr week if she makes 18 million per hour how much money did she earn for the week
choli [55]

Answer:

576 million dollars

Step-by-step explanation:

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6 0
3 years ago
Suppose that the waiting time for a license plate renewal at a local office of a state motor vehicle department has been found t
Wittaler [7]

Answer:

a=30 +1.04*8=38.32

So the value of height that separates the bottom 85% of data from the top 15% is 38.32.  

C) 38.32

Step-by-step explanation:

1) Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

2) Solution to the problem

Let X the random variable that represent the waiting time in minutes of a population, and for this case we know the distribution for X is given by:

X \sim N(30,8)  

Where \mu=30 and \sigma=8

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

We want to find a value a, such that we satisfy this condition:

P(X>a)=0.15   (a)

P(X   (b)

Both conditions are equivalent on this case. We can use the z score again in order to find the value a.  

As we can see on the figure attached the z value that satisfy the condition with 0.85 of the area on the left and 0.15 of the area on the right it's z=1.04. On this case P(Z<1.04)=0.85 and P(z>1.04)=0.15

If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=1.04

And if we solve for a we got

a=30 +1.04*8=38.32

So the value of height that separates the bottom 85% of data from the top 15% is 38.32.  

C) 38.32

7 0
3 years ago
Help please:) and thx
Juli2301 [7.4K]

Answer:

yes

Step-by-step explanation:

4 0
2 years ago
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