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3 years ago

Which is the single discount that is the same as three successive discounts of 20% ?

Mathematics

1 answer:

vichka [17]3 years ago

7 0

Answer:

The single discount that is the same as three successive discounts of 20% is 48.8%.

Step-by-step explanation:

In order to find the answer, you can calculate the three successive discounts of 20% from 100,which would be:

100*20%=20

100-20=80

80*20%=16

80-16=64

64*20%=12.8

64-12.8=51.2

According to this, the amount after successive discounts of 20% is 51.2 and you can subtract this from 100 and that amount would indicate the single discount that is the same as three successive discounts of 20%:

100-51.2=48.8%

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A line has slope 5/6 and y–intercept −3.

Mila [183]

Answer:

Step-by-step explanation:

Make an equation using slope intercept form:

y=mx+b,

where m is the slope, and b is the y intercept

Substitute 5/6 in for m, and -3 in for b

y=mx+b

y=5/6x-3

So, choice C is the answer

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3 years ago

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3 years ago

13. A bag contains 8 red marbles, 4 purple marbles, 5 green marbles, 2 orange, and 1 blue

nexus9112 [7]

Answer:

a) 9 / 200

b) 13 / 100

Step-by-step explanation:

a) The two events are independent because they do not depend each other since the marbles are replaced. To find the total probability of two independent events, you multiply the probability of each event together.

Probability is represented by the amount of desirable outcomes over the total number of outcomes. The total would be the number of marbles, which is: 8 + 4 + 5 + 2 + 1 = 20 outcomes. The number of orange marbles is 2, so the outcomes where you do not pick orange are 20 - 2 or 18 outcomes. The probability of not picking an orange marble would be 18 / 20 or 9 / 10 (using the formula for probability).

There is one outcome where we can pick a blue marble, so the probability of picking a blue marble is 1 / 20. Now, we need to multiply the probabilities for each event: 1 / 20 * 9 / 10 = 9 / 200

b)There are 5 green marbles and 8 red marbles, so the the total outcomes where you pick green or red is 13. We put that over our total to get 13 / 20.

There are 4 purple marbles, so the probability of picking purple is 4 / 20 or 1 / 5. Now we multiply the two probabilities to get the total probability: 1 / 5 * 13 / 20 = 13 / 100

6 0

3 years ago

For each equation, enter two more equations using the same numbers that express the same relationship in a different way. 3+2=5

Zepler [3.9K]

Answer:

$3 = 5 - 2$

$2 = 5 - 3$

Step-by-step explanation:

Given

$3 + 2 = 5$

Required

Express in different ways

The first way is:

$3 + 2 = 5$

Subtract 2 from both sides

$3 + 2 -2= 5 - 2$

$3 = 5 - 2$ ------ (1)

Another way is:

$3 + 2 = 5$

Subtract 3 from both sides

$3 - 3 +2 = 5 - 3$

$2 = 5 - 3$ --- (2)

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3 years ago

LaTonda rolls two number cubes that are each numbered 1 through 6. What is the probability that the sum of the numbers on the to

ZanzabumX [31]

Answer:

1/4

Step-by-step explanation:

The maximum sum of the two cubes is 6 + 6 = 12

The multiples of 4 until 12 are: 4, 8 and 12.

each cube has 6 possible values, so two cubes have a total of 6 * 6 = 36 possible results

We can have a sum of 4 with the pairs (1,3), (2,2), (3,1).

We can have a sum of 8 with the pairs (2,6), (3,5), (4,4), (5,3), (6,2)

We can have a sum of 12 with the pair (6,6)

So we have a total of 9 pairs that satisfy our condition over a total of 36 possibilities, so the probability is 9 / 36 = 1/4

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3 years ago