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2 years ago

-3(2x - 4) distributive property

Mathematics

1 answer:

inna [77]2 years ago

6 0

Answer:

-6x + 12

Step-by-step explanation:

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4) There are 4 marbles and 3 cubes in a board game. The marbles are black, blue, yellow, and red. The cubes are numbered 1, 2, a

krek1111 [17]

Answer:

<u>Here is the sample space, its size is 4*3 = 12:</u>

Black 1
Black 2
Black 3
Blue 1
Blue 2
Blue 3
Yellow 1
Yellow 2
Yellow 3
Red 1
Red 2
Red 3

3 0

2 years ago

Read 2 more answers

What is the slope of a line that passes through<br> the points (-6, -3) and (6, -7)?

saw5 [17]

Answer: -1/3 is the slope

Step-by-step explanation:

y=-1/3x-5 is what the equation looks like when you put it on a graph.

5 0

3 years ago

Which is an outlier out of 45,47,71,50,49 and 52

Elis [28]

The outlier is 71.

An outlier in a set of data is the one that is significantly lower or higher than the average of the totals. Whichever number skews the average is the outlier.

In this case, it's 71.

6 0

3 years ago

Which expression can be used to change 75 kilometers per hour to meters per minute?

atroni [7]

$1h=60min\\1km=1000m\\\\\\75\ km/h=75\cdot\frac{1000}{60}\ m/min=1250\ m/min$

4 0

2 years ago

All 10,000 California students in the beginning of 8th grade are given an entrance exam that will allow them to attend a top aca

lys-0071 [83]

Answer:

1.32% of students have the chance to attend the charter school.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using 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.

This year the mean on the entrance exam was an 82 with a standard deviation of 4.5.

This means that $\mu = 82, \sigma = 4.5$

a.What is the percentage of students who have the chance to attend the charter school?

Students who achieve a score of 92 or greater are admitted, which means that the proportion is 1 subtracted by the pvalue of Z when X = 92. So

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

$Z = \frac{92 - 82}{4.5}$

$Z = 2.22$

$Z = 2.22$ has a pvalue of 0.9868

1 - 0.9868 = 0.0132

0.0132*100% = 1.32%

1.32% of students have the chance to attend the charter school.

7 0

3 years ago