Carlos spent 15 minutes practicing his multiplication facts.
Explanation:
An hour is 60 minutes, Carlos practiced his multiplication facts for 1/4 of an hour.
First you must do 60 divided by 4 which is 15. 1/4 of an hour is 15 minutes.
The probability of not drawing a black marble is 4/5
The probability of drawing a red marble is 3/10
<h3>What are the probabilities?</h3>
Probability determines the odds of the occurrence of a random event. The probability the event occurs is 1 and the probability that the event does not occur is 0.
Probability of not drawing a black marble = total marbles that are not black / total number of marbles
(5 + 3) / (5 + 3 + 2) = 8/10 = 4/5
The probability of drawing a red marble = total number of red marbles / total number of marbles
= 3/10
To learn more about probability, please check: brainly.com/question/13234031
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Answer: 450 plus 451 plus 452 = 1,353.
Step-by-step explanation:
Answer:52°
Step-by-step explanation:
x+x+14=90
Collect like terms
x+x=90-14
2x=76
Divide both sides by 2
2x/2=76/2
x=38
Angle (x+14)°=(38+14)°=52° which is vertically opposite to angle PKQ.
Vertically opposite angles are equal .
Therefore angle PKQ=52
