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Damm [24]
3 years ago
7

the bookstore has 6 shelves of books about animals. there are 30 books on each shelf. how many books about animals does the book

store have
Mathematics
1 answer:
Vikentia [17]3 years ago
6 0
It should be 5 on each shelf.
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Janet and Kyle each purchase Blu Ray discs and Cd's from Amazon. Janet buys 3 Blu ray and 2 Cd's for $58. Kyle buys 1 Blu Ray an
polet [3.4K]

Answer:

y = 20   x = 6

Step-by-step explanation:

1 (3x+ 2y = 58 ------------>  -3x + -2y = -58

1x + 2y = 46 -------------->    1x + 2y = 46  

                                              ____________

                                                -2x  =  -12

                                               -----------------

                                                -2x       -2x

                                                 x = 6

3(6) + 2y = 58

18 + 2y = 58

-18          -18                                    

------------------

       2y = 40

      -----  -----

       2y     2y

y = 20

                                               

                                           

7 0
3 years ago
You earned $34,000 and your total tax due was $6,200. what was your average tax rate?
nexus9112 [7]
6200 / 34000 = 0.1823....multiply by 100 to get ur percent
0.1823 * 100 = 18.23 rounds to 18% <=
5 0
3 years ago
How to work out math problem %of 50 shirts is 35 shirts
CaHeK987 [17]
50 shirts is equal to 100% of the shirts right? So, to find what percentage 35 shirts is, you can divide 35 by 50 to get the decimal value of the percentage. This gives you 0.7, which is the same as 70%. 

35 shirts are 70% of 50 shirts.
7 0
3 years ago
Read 2 more answers
The probability of a certain brand of battery going dead within 15 hours is. Noah has atoy that requires 4 of these batteries. H
Delicious77 [7]

Question:

The probability of a certain brand of battery going dead within 15 hours is 1/3. Noah has a toy that requires 4 of these batteries. He wants to estimate the probability that at least one battery will die before 15 hours are up.1.Noah will simulate the situation by putting marbles in a bag. Drawing one marble from the bag will represent the outcome of one of the batteries in the toy after 15 hours. Red marbles represent a battery that dies before 15 hours are up, and green marbles represent a battery that lasts longer.How many marbles of each color should he put in the bag? Explain your reasoning.

Answer:

The number of marbles of each color that should be present in the bag is;

1 red marble and 2 green marbles

Step-by-step explanation:

Here, we note that the probability of a battery going dead = 1/3 and the

Therefore if the red marbles represent that a battery dies before 15 hours then the probability of picking the red marble should be 1/3. That is if there is only one red marble in the bag, the probability of picking the red will be 1/3 when there are other 2 green batteries in the bag

That is there should be 1 red marble and 2 green marble in the bag.

4 0
3 years ago
Which of the following is a terminating decimal?
Kobotan [32]
The answer should be C
3 0
2 years ago
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