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Rashid [163]
3 years ago
9

A crew of highway workers paved 2/15 miles in 20 minutes. If they work at the same rate, what portion of a mile will they pave i

n one hour?
Mathematics
1 answer:
Gennadij [26K]3 years ago
4 0
Since they completed 2/15 miles in 20 mins.

There are 60 mins in an hour so we can multiply they amount of work they did by 3 and that will equal .4
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12 picks in all . 1 out of 4 picks are orange . the rest are green . How many picks are orange ?
makvit [3.9K]
For every 4 picks there is 1 orange pick, so 12/4 should be fine
7 0
3 years ago
The admission prices for a small fair are $1.50 for children and $4.00 for adults. In one day there was $5050 collected. If we k
aliina [53]

Answer: 475 adults paid admission

Step-by-step explanation:

1.50c+4a=5050 (1.50 per child and 4 per adult)

1.50(2100)+4c=5050 (2100 children times 1.5 each)

3130+4a=5050

4a=1900

a=475

3 0
3 years ago
You have 9 medals.<br> You have 9 fewer than your friend. How<br> many medals does your friend have?
Ivan
Your friend has 18 medals.
7 0
2 years ago
What is the center of the data?
satela [25.4K]

Answer:

Median = 13

Step-by-step explanation:

Given

See attachment for dot plot

Required

The center of data

This implies that, we calculate the median

From the attached plot,

n = 13 --- number of observation

So, the median is:

Median = \frac{n + 1}{2}

Median = \frac{13 + 1}{2}

Median = \frac{14}{2}

Median = 7th

The median is at the 7th position

At the  7th position, is 13

Hence:

Median = 13

5 0
2 years ago
Read 2 more answers
Worldwide, the proportion of babies who are boys is about 0.51 . Let the random variable X represent the number of boys in five
solmaris [256]

Answer:

mean = 2.55

Standard deviation = 1.118

Step-by-step explanation:

Probability of babies who are boys

P = 0.51

Then we have q = 1-p

= 1-0.51

= 0.49

We have n = 5

We calculate the mean as:

np

= 0.51x5

= 2.55

Therefore mean = 2.55

The standard deviation

= √variance

= √npq

= √0.51x5x0.49

=√1.2495

= 1.118

6 0
2 years ago
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