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Advocard [28]
3 years ago
9

Kathy's average score after 3 math quizzes was 83. Her score on the 4th quiz was 87. If all 4 of the quizzes are weighted equall

y, which of the following is closest to her average score after 4 quizzes?​
Mathematics
1 answer:
umka21 [38]3 years ago
3 0

Answer:

84

Step-by-step explanation:

Pretend her first 3 quizzes were all 83 since that was the average. So the 4th was 87.

83+83+83+87 = 336

Divide by the total number of quizzes because they are equally weighted.

336/4 = 84

Her new average score is 84.

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How many possible outcomes are there on ryan's first turn flipping two cards?
GalinKa [24]

The possible outcomes are there on Ryan's first turn flipping two cards is

<h3>What are cards?</h3>

The cards are 52 in number in which 13 cards are different. Each card is four in quantity.

Ryan is playing a multiplication game with a pile of 26 cards, each with a number on them.

Each turn, he flips over two of the cards and has to  multiply the numbers.

The  number of ways in which two cards can be selected  from 26 cards, at the same time. The order of those are important.

Then, the number of possible outcomes on each flip of two cards

= 26 p(2)

= 26 x 25

=650

Thus, the possible outcomes are there on Ryan's first turn flipping two cards.

Learn more about cards.

brainly.com/question/7570270

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3 0
2 years ago
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Answer:

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Step-by-step explanation:

3 0
3 years ago
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Find the equation (in standard form) whose center is (5, -3) and goes through (2, 5).
yanalaym [24]
We can write this as

(x - 5)^2 + (y + 3)^2 = r^2

where r = radius

Plugging in the point (2,5) we have

(2-5)^2 + (5+3)^2 = r^2
r^2 =  9 + 64 = 73
so the required equation is

(x - 5)^2 + (y + 3)^2 = 73
3 0
3 years ago
What is the best method
Ksenya-84 [330]

Answer:

completing the square

Step-by-step explanation:

4 0
3 years ago
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Which equation is a true proportion?
Svetllana [295]

Answer:

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Step-by-step explanation:

which equation is a true proportion

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