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tiny-mole [99]
2 years ago
9

-5 1/2 + 6 3/4 + (-4 1/4)

Mathematics
1 answer:
V125BC [204]2 years ago
8 0

Answer:

-3

Step-by-step explanation:

-5 1/2 + 6 3/4 - 4 1/4

= 1 1/4 - 4 1/4

= -3

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Diane's Tree Trimming Service has trimmed hundreds of trees in the Greater Denver area. The time it takes to trim a tree is norm
kkurt [141]

Answer:P(28.5And we can find this probability with this difference:

P(-0.7

And in order to find these probabilities we use tables for the normal standard distribution, excel or a calculator.

P(-0.7

So then the best answer would be 21.82 %

Step-by-step explanation:

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".  

Solution to the problem

Let X the random variable that represent the time it takes to trim a tree of a population, and for this case we know the distribution for X is given by:

X \sim N(32,5)  

Where \mu=32 and \sigma=5

We are interested on this probability

P(28.5

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}

If we apply this formula to our probability we got this:P(28.5And we can find this probability with this difference:

P(-0.7

And in order to find these probabilities we use tables for the normal standard distribution, excel or a calculator.

P(-0.7

 So then the best answer would be 21.82 %

8 0
3 years ago
Suppose you were given $10 as a gift.Name three different ways to save your money.
Fed [463]
Dont spend it. Spend less. Dont give it away.
4 0
3 years ago
Read 2 more answers
Suppose A and B are independent events. If P(A)=0.2 and P(B)=0.6, what is P(A^B)?
lawyer [7]
OK so you want the probabilty of A and B occurring.  Independet event probabilities are multiplied so its 0.2 * 0.6 = 0.12

b
3 0
3 years ago
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What is the domain of the rational function, f of x equals quantity x minus 5 over quantity 2 times x minus 3
liq [111]

Answer:

<u>Domain = R - {3/2}</u>

Step-by-step explanation:

The domain of a rational function consists of all the real numbers x except those for which the denominator is 0

The given function is :

f(x) = \frac{x-5}{2x-3}

We need to find the zeros of the denominator

∴ 2x - 3 = 0    ⇒ add 3 to both sides

∴ 2x = 3          ⇒ divide both side by 2

∴ x = 3/2        

The domain will be all real number except the zeros of the denominator.

So, Domain = R - {3/2}

Also, see the attached figure that represents the given function.

7 0
3 years ago
Please help me with this !!!!!!!!!!!!!!!!
sergij07 [2.7K]

Answer:

option D. 29

Step-by-step explanation:

since the selling price per mow on weekdays is 45 so divide the total earned with the price

1305 / 45 = <em>29</em>

<em>this is the answer</em>

4 0
3 years ago
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