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3 years ago

Tom rolls 2 fair dice and adds the results from each. Work out the probability of getting a total that is a factor of 21.

Mathematics

1 answer:

nika2105 [10]3 years ago

5 0

Answer:

3 plus 4. and 2 plus 1. or 4 plus 3 or 1 plus 2

Step-by-step explanation:

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Is .72 repeating rational or irrational

Kamila [148]

Answer:

.72 is a rational number

Hope this helps!

4 0

3 years ago

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Zak buys 6 gallons of fruit punch. He has coupons for $0.55 off the regular price of

kherson [118]

Answer:

$2.00

Step-by-step explanation:

If Zak is Buying 6 gallons, and he has a coupon for each gallon for $0.55 off, we need to first find how much he saved.

We can do this by calculating $0.55 (or 0.55) multiplied by 6. This answer is 3.30, or $3.30.

Now we add $3.30 to $8.70 to get the normal price for 6 gallons of fruit punch.

3.30 + 8.70 = 12.00, or $12.00

The normal price for 6 gallons of fruit punch is $12.00.

Now, we divide 12 by 6 to get the cost of one single gallon of fruit punch.

12/6 = 2

One gallon of fruit punch costs $2.00

Hope this helps! Have a great rest of your day! :)

7 0

2 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: $\frac{2500\times100}{100}$

=2500

taking it's squareroot we have $\sqrt{2500}=50$

Hence, standard deviation=50.

5 0

4 years ago

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Write an algebraic expression for the word phase.

Reika [66]

The answer is 10gh.

The product of g and h means the multiplication of g and h, so it would just be gh.

10 times the product of g and h would mean 10 multiplied by gh, so it would just be gh.

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2 years ago

Rochelle deposits $5,000 in an IRA. What will be the value of her investment in 25 years if the investment is earning 8% per yea

Iteru [2.4K]

Answer:

$\$36,945.28$