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3 years ago

7/10

Mathematics

1 answer:

LenaWriter [7]3 years ago

8 0

Answer:

There are 97 nickels in the jar

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Number of coins = 205

Number of nickels = x

Number of quarters = 205 - x

Value of the 205 coins = $ 31.85

2. If both of these statements are true, how many nickels are in the jar?

Let's solve for x, this way:

0.05x + 0.25 (205 - x) = 31.85

0.05x + 51.25 - 0.25x = 31.85

-0.2x = 31.85 - 51.25

-0.2x = - 19.4

x = -19.4/-0.2

x = 97 ⇒ 205 - x = 108

There are 97 nickels and 108 quarters in the jar

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I don't really understand the question so can someone help me answer the question please?

Ksivusya [100]

Answer:

1/ 3

Step-by-step explanation:

If each of the cards is turned over, the probability of picking up a card of one type P(E) becomes equal to:

=> P(E) = number of cards of the required type/ total number of cards

● Total number of spades( ♤ ) = 3

{the queen, one ace and the nine are all spades}

● Total number of cards = 6

Probability of drawing a spade= 3/ 6

= 1/ 2

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Probability of drawing a 7

= 1/ 6

Now, what's asked is the difference in the probabilities of drawing a spade and a seven.

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= 3/ 6 - 1/ 6

= 2/ 6

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3 years ago

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Answer:

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2 years ago

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andriy [413]

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The average rate of change between x=1 and x=4 is 22. The average rate of changed describes the rate at which miles is changing with respect the the change in hour.

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y=mx+b
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True

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