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Marina86 [1]
3 years ago
15

A weather forecaster predicts that there is a 45% probability of snow today. What is the probability that it will not snow?

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
8 0
55% if the percent is out of 100%. in which most weather statisics are out of 100. in which you take 100-45= giving you 55%
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In one year the perseid metor shower had a metor appear every 1/5 5 minutes on average That same year the Leonid metor shower ha
olga55 [171]

In one year, the Perseid meteor shower had a meteor appear every 1 1/5 minutes on average. That same year, the Leonid meteor shower had a meteor appear every 4 2/3 minutes on average. How many more meteors fell during the Perseid meteor shower?

Answer:

325,452 meteors

Step-by-step explanation:

We all know that :

We have 365 days in a year and in each day there are 24 hours, Likewise an hour has 60 minutes

SO, the total number of minutes in a year is :

365 × 24 × 60 = 525600 minutes

For Perseid  meteor:

1 + \frac{1}{5}  \\ \\ = 1 + 0.2 \\  \\ = 1.2

So one meteor fall at 1.2 minutes interval Thus, in a year, we will have :

1 meteor - 1.2 minutes.

x meteor - 525600 minutes.

1.2x = 525600

x = \frac{525600}{1.2}

x = 438000

∴  438,000 meteors fell during the Perseid shower.

For  Leonid meteor shower:

4 + \frac{2}{3} = 4.67

So one meteor fall at 4.67 minutes interval Thus, in a year, we will have :

1 meteor - 4.67 minutes.

x meteors - 525600 minutes.

4.67x = 525600

x = \frac{525600}{4.67}

x = 112548

112,548 meteors fell during the Leonid Shower.

Finally , the numbers of more meteors that  fell during the Perseid meteor shower is calculated by the difference in the number of Perseid meteor shower and Lenoid meteor shower. i.e

438,000 - 112,548 = 325,452

325,452 more meteors fell during the Perseid meteor shower

5 0
3 years ago
Lin's family has complete 70% of a trip. They have traveled 35 miles how far is the trip
Bogdan [553]

Answer  

50 miles:) I'm positive  but there may be a chance it's 200

4 0
3 years ago
Which polynomial represents the sum below?
adell [148]

Answer:

answer A

Step-by-step explanation:

hello,

4x^2 + 1 + 4x^2+x+2=(4+4)x^2+x+1+2=8x^2+x+3

hope this helps

8 0
3 years ago
Read 2 more answers
-2x - y =0 is it direct variation?​
oksian1 [2.3K]

Answer:

y=11

Step-by-step explanation:

4 0
2 years ago
A student's cost for last semester at her community college was 2800. She spent 448 of that on books. what percent of semester's
Diano4ka-milaya [45]

16%

Step-by-step explanation:

Percent can by calculated by part divided by whole multiplied by one hundred so (448/2800)*100=16

4 0
2 years ago
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