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ddd [48]
3 years ago
11

Noah solved three math problems. The first problem took him 1 minute. The second problem took him 30% longer than the first prob

lem, and the third problem took him 50% longer than the second problem. How long did it take Noah to solve all three problems?
Mathematics
1 answer:
lora16 [44]3 years ago
4 0
60 seconds * 1.30 = 78. 78 seconds * 1.5 = 117 seconds.

117+78+60= 225 seconds.

225 seconds is your answer! :)
Hopefully this helped!
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Ben is 30 years old and daniel is 2 years old .how many years will it take until ben is only 3 times as old as daniel?
Ronch [10]
30x = 6
x = 1/5 years @ 2 months 2/5 days
3 0
3 years ago
The following are house prices in Southern California:
Afina-wow [57]

Answer:

A. 875,000

Step-by-step explanation:

Order them by least to greatest and then find the median from there so, 700,000; 750,000; 800,000; 875,000; 1,000,000; 1,160,000; 1,180,000

875,000 is the middle man so there is your answer

4 0
3 years ago
Read 2 more answers
What is the standard deviation of the data set {6, 8, 6, 11, 8, 8, 9}? round to the nearest tenth ​
Olegator [25]

Answer:

8

Step-by-step explanation:

the one that the number has are the same is the data

8 0
4 years ago
In the past year Jenny watched 44 movies that she thought were very good. She watched 55 movies over the whole year. Of the movi
igomit [66]

To solve this problem, we must divide the number of movies that Jenny thought were very good by the total number of movies she watched. This is because we are finding a percentage, which represents a part out of a whole that have a factor, which in this case is very good movies. First, we begin by dividing 44/55. Then, we realize that both the numerator and the denominator are divisible by 11, so if we divided them both by 11 that would simplify the fraction.

44/55 = 44/11 / 55/11 = 4/5

Next, we can now easily divide our simplified fraction.

4/5 = 0.8

Finally, we must multiply by 100, because a percentage is a portion of 100 (the total is 100%). This is equivalent to moving the decimal point two places to the right.

0.8 * 100 = 80%

Therefore, Jenny thinks that 80% of the movies she watched this year were very good.

Hope this helps!

7 0
3 years ago
Two lighthouses flash their lights every 20 seconds and 30 seconds respectively. Given that they flash together at 8 p.m, when w
Free_Kalibri [48]
One minute later at 8:01pm. One lighthouse will flash 3 times (at 20, 40 and 60 seconds)...the other will flash twice (at 30 and 60 seconds). So they will both flash 60 seconds later, at 8:01
6 0
3 years ago
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