3 years ago

Donna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz.

Mathematics

1 answer:

nata0808 [166]3 years ago

5 0

Answer:

Step-by-step explanation: 5 times 20 = 100

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A bag contains 3 red marbles 4 blue marbles and 7 Green marbles if two marbles are drawn out of the bag what is the probability

mr_godi [17]

Answer:

0.368

Step-by-step explanation:

Number of red marbles= 3

Number of blue marbles= 4

Number of green marbles= 7

Total number of marbles= 3+4+7= 14

Let the first ball is taken out to be red

P(R)= $\frac{3}{14}$

than again a second ball is drawn, number of balls left= 14-1=13

Number of red= 2

P(R)= $\frac{2}{13}$

Total probability= $\frac{3}{14}$ + $\frac{2}{13}$

Total probability= 0.368

Hence, the correct answer is 0.368

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zmey [24]

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Step-by-step explanation:

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(3p+5)(2) simplified

Vsevolod [243]

Multiply each term in the parentheses by 2
3p x 2 +5 x2

Calculate the product
6p+5 x 2

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That’s your answer
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