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4 years ago

Can someone help with my homework ?

Mathematics

2 answers:

horsena [70]4 years ago

8 0

Let's work backwards. The 2001 team won 29 games. They won 2 more games than the 2000s team, 29-2=27. The 200s team won 27 games. The 2000 team won 27 games, and they won 3 more than the 1999 team. 27-3 = 24.

The 1999 team won 24 games.

Serga [27]4 years ago

6 0

He 2000 team won 27 games, and they won 3 more than the 1999 team. 27-3 = 24.

The 1999 team won 24 games.

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Evaluate 3x+4 for the given values of x

galina1969 [7]

Answer:

b) 3(9) + 4 = 36 + 4 = 40

c) 3(0) + 4 = 0 + 4 = 4

d) 3(-3) + 4 = -9 + 4 = -5

e) 3(8) + 4 = 24 + 4 = 28

6 0

3 years ago

Simplify the expression by combining like terms. 4y+7x- 2y+4x

juin [17]

Hello!

Answer:

$\boxed{2y+11x}$

Step-by-step explanation:

Distributive property: a(b+c)=ab+ac

First, you switch sides. *Group like terms*

$4y-2y+7x+4x$

Then, you add the similar to elements. You can also add the numbers from left to right.

$4y-2y=2y$

$2y+7x+4x$

$7x+4x=11x$

$\boxed{2y+11x}\checkmark$ , is the correct answer.

Hope this helps!

Have a nice day! :)

4 0

4 years ago

Read 2 more answers

200 3. A technician charges $25 per hour plus $50 for a house call to repair home computers. Make a table and a graph to show th

Tju [1.3M]

Recall that for a home visit, the technician charges $50 regardless on the time spent in the repair.

So, to find out the rate, we should calculate the part that depends on the spent time, and the add 50. So for example, we know that the technician spents 1 hour. So, we multiply 1 times 25 and then add 50. So, 25*1 + 50 = 75, which is the rate for a 1-hour repair.

So, in general, if we know that the number of hours is x, we multiply x times 25 and then add 50. Then a table would like this:

x 25*x 25*x +50

1 25 75

2 50 100

3 75 125

4 100 150

Note that as the time increases by one hour, the fare increases by 25. This is an example of a direct variation, since as the independent variable increases (t

6 0

1 year ago

The time taken to assemble a laptop computer in a certain plant is a random variable having a normal distribution of 20 hours an

ludmilkaskok [199]

Answer:

a) 40.13% probability that a laptop computer can be assembled at this plant in a period of time of less than 19.5 hours.

b) 34.13% probability that a laptop computer can be assembled at this plant in a period of time between 20 hours and 22 hours.

Step-by-step explanation:

When the distribution is normal, we use the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question:

$\mu = 20, \sigma = 2$