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3 years ago

Math Prodigy- I know the answer, just trying to get an even number of points.

Mathematics

2 answers:

horrorfan [7]3 years ago

5 0

There are seven groups of stars and 49 stars in total. 49/7=7 7 stars per group is the answer

Vitek1552 [10]3 years ago

5 0

Answer:

7x7=49

Step-by-step explanation:

there is 7 groups of 7, so you multiply it to get 49

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What is the slope for this line?

Juli2301 [7.4K]

Answer:

Step-by-step explanation:

2/1=2, 8/4=2, 12/6=2

3 0

3 years ago

E=mc²<br>solve for m <br>McGraw-Hill algebra 2 book page 23 question 45<br>thanks in advance

Brums [2.3K]

Answer:

m = E/c²

Step-by-step explanation:

E = mc²

mc² = E

Divide both sides by c².

m = E/c²

3 0

1 year ago

If 84 is divisible by 2, then 84 is an even number

RideAnS [48]

Answer:

Yes

Step-by-step explanation:

All even numbers are divisible by two.

5 0

3 years ago

Suppose on a certain test, fifty students earn a perfect score and fifty students earn a zero. determine the mean grade and stan

kodGreya [7K]

Answer:

Mean=50.

standard deviation=50.

Step-by-step explanation:

Let the perfect score be 100.

The mean(average) of a data is given by: $Mean=\frac{sum of data points}{number of data points}$

Here the number of data points are 100. out of which 50 attains a value 100,and 50 attains value 0.

so, sum of data points=50×100+50×0=5000.

$Mean=\frac{5000}{100}$

Mean=50.

"Now the standard deviation of data points are calculated by firstly subtracting mean from every entry and then square the number and take it as new entry and calculate the mean of the new data entry and lastly taking the square root of this new mean".

Here if 50 is subtracted from each entry the new entry will have 50 entries as '50' and 50 entries as '-50'.

next on squaring we will have all the 100 entries as '2500'.

now the mean of these entries is: $\frac{2500\times100}{100}$