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Volgvan
3 years ago
6

Which expression means a number divided by 3? A. r – 3 B. r ÷ 3 C. r + 3 D. r × 3

Mathematics
2 answers:
nirvana33 [79]3 years ago
7 0
B.....is has division...................
ale4655 [162]3 years ago
6 0
It would Be B for sure
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Internet providers: In a survey of 935 homeowners with high-speed Internet, the average monthly cost of a high-speed Internet pl
BlackZzzverrR [31]

Answer:

68% of plans cost between $62.16 and $86.52.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviation of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean: 74.34

Standard deviation: 12.18

Bell-shaped is the same as normally distributed.

Estimate the number of plans that cost between $62.16 and $86.52.

62.16 is one standard deviation below the mean.

86.52 is one standard deviation above the mean.

By the Empirical rule, 68% of the measures are within 1 standard deviation of the mean.

So

68% of plans cost between $62.16 and $86.52.

7 0
3 years ago
2. Red light: Pedro drives the same route to work on Monday through Friday. His route includes one traffic light.
Nataly [62]

Answer:

So, the probability is P=0.018.

Step-by-step explanation:

We know that Pedro drives the same route to work on Monday through Friday.  

We know that  there is a 55% chance that the light will be red.  

We get that p=55%=0.55.

We conclude that the probability of not being a red light:

q=1-p=1-0.55=0.45.

We can calculate the probability that from Monday to Friday when Pedro goes to work there will be no red light, as follows:

P=q^5\\\\P=0.45^5\\\\P=0.018

So, the probability is P=0.018.

8 0
3 years ago
Which expression is equivalent to 4 (9 + 7)
Bad White [126]

4(9+7) = 36+28 = 64

open the parentheses, then simplify.

8 0
2 years ago
Help would be greatly appreciated :)
Anton [14]
The bottle of 100 would be lowest. $8.13 ÷ 100 lozenges = $0.08 per lozenge

7 0
3 years ago
Can you please help me on add and subtract fractions level 1 9/8-11/8
zhannawk [14.2K]

Answer:

7/8

Step-by-step explanation:

1. Make 1 9/8 into an improper fraction

1 = 8/8

8/8 + 9/8 = 17/8

2. Subtract

17/8 - 11/8 = 7/8

3 0
3 years ago
Read 2 more answers
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