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2 years ago

A bag contains 63 marbles, some red and some green. The ratio of red marbles to green

Mathematics

1 answer:

Nikolay [14]2 years ago

6 0

Answer:

45 green marbles

Step-by-step explanation:

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What is the value of x????

inysia [295]

If QR is a median, then:

$\dfrac{NO+MP}{2}=QR$

We have NO = 30, MP = 9x - 42 and QR = x + 15. Substitute:

$\dfrac{30+9x-42}{2}=x+15\qquad\text{multiply both sides by 2}\\\\9x-12=2x+30\qquad\text{add 12 to both sides}\\\\9x=2x+42\qquad\text{subtract 2x from both sides}\\\\7x=42\qquad\text{divide both sides by 7}\\\\\boxed{x=6}$

<h3>Answer: A. 6</h3>

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3 years ago

A baker took 9 hours to bake 6 cakes how long does it take him to bake 1 cake?

AlexFokin [52]

Answer:

1.5 hours

Step-by-step explanation:

5 0

3 years ago

Your friend is supposed to meet you at the beach between 12pm and 1:30pm. If you arrive at 12:25pm and you do not see you friend

Alexus [3.1K]

The probability that you will have missed your friend is 27.78%

<h3>How to determine the probability?</h3>

The time of meeting is given as:

Time = 90 minutes (i.e 12pm and 1:30pm)

Your time of arrival is given as:

Arrival = 12:25pm

If you missed your friend, it means that your friend arrives earlier.

So, the time spent by your friend is:

Friend= 12:25 - 12 = 25 minutes

The probability that you will have missed your friend is:

P = 25 minutes/90 minutes

Evaluate

P = 27.78%

Hence, the probability that you will have missed your friend is 27.78%

Read more about probability at

brainly.com/question/251701

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5 0

1 year ago

70, 000 grams= kilograms

Vesnalui [34]

70,000 grams is 70 kilograms

8 0

2 years ago

Read 2 more answers

after spending 7/9 of a three hours examination, a student left the exams hall. How many minutes has he to complete the duration

Montano1993 [528]

40 mins left! total time= 60 mins x 3 hours =180 mins. 180 divided by 9 is 20. 20 times 7 is 140. 180-140 equals 40. yay!

6 0

2 years ago