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notsponge [240]
3 years ago
14

Help me please!! I will mark Brainliest!!!!

Mathematics
2 answers:
murzikaleks [220]3 years ago
6 0

Answer:

D

Step-by-step explanation:

42 minus 31 is 11

so 11/42 = /100

dsp733 years ago
6 0

Answer:

11/42 = x/100

Step-by-step explanation:

42 students and 31 are girls

42 -31 = 11 that is the number of boys

boys / total = x/100 to find the percent

11/42 = x/100

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Find X to solve to problem and find all the angles
sesenic [268]

Answer:

Step-by-step explanation:

x + x + 65 °+ 25° = 180° ( being sum of angles of triangle )

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Hope it helps :)

8 0
3 years ago
for every 140 feet that kelly rides on her bicycle, the wheels turn 20 times. about how many times do the wheels turn in 5 miles
lana [24]

Answer:

184800 times

Step-by-step explanation:

The first step is to find out how many times the wheels turn in one foot. The ratio of rotations per minute is 20:140. This can be simplified to 1:7, meaning there is 1/7 of a rotation for every 1 foot.

Next, we need to find out how many times they turn in one mile. The ratio is 1:7, and the 1 needs to become 5280. To do this, multiply both sides of the ratio by 5280. You will get 5280:36960, meaning there is 36960 rotations every mile (the ratio of miles to rotations is 1:36960).

Now, multiply 1:36960 by 5 to get the amount of rotations per every 5 miles. You will get 184800.

Final answer: the wheels turn 184800 times in 5 miles.

4 0
3 years ago
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