1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marissa [1.9K]
3 years ago
11

Alberto walks 0.8 miles to school. It took him 6 minutes to walk the first 0.3 miles. Atthat rate how long would the entire trip

take him?
Mathematics
1 answer:
Tatiana [17]3 years ago
6 0
17 minutes to walk the 0.8 miles.
You might be interested in
A worn, poorly set-up machine is observed to produce components whose length X follows a normal distribution with mean 14 centim
Akimi4 [234]

Answer:

74.86% probability that a component is at least 12 centimeters long.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 14

Variance is 9.

The standard deviation is the square root of the variance.

So

\sigma = \sqrt{9} = 3

Calculate the probability that a component is at least 12 centimeters long.

This is 1 subtracted by the pvalue of Z when X = 12. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{12 - 14}{3}

Z = -0.67

Z = -0.67 has a pvalue of 0.2514.

1-0.2514 = 0.7486

74.86% probability that a component is at least 12 centimeters long.

6 0
3 years ago
One teacher wants to give each student 1 4 _ of a slice of pizza. If the teacher has 2 slices of pizza, then how many students w
Allisa [31]

Answer:

8 slices

Step-by-step explanation:

of pizza widnwksdbwn

4 0
3 years ago
How do you find a rate of change
ddd [48]
Consider the line y = 2x + 1, shown at the right. Notice that this slope will be the same if the points (1,3) and (2, 5) are used for the calculations. For straight lines, the rate of change<span> (slope) is constant (always the same). For every one unit that is moved on the x-axis, two units are moved on the y-axis.hope this helped. </span>
5 0
3 years ago
The radius of one sphere is twice as great as the radius of a second sphere. Find the ratio of their volumes.
Juliette [100K]
The ratio of the radii is 2:1, so the ratio of their surface areas is 4:1. <span>The area of a sphere is defined by 4 * pi * r^2 </span>

<span>So if the radius of the first sphere is 2r, then it would be (2r)^2 = 4r^2 </span>

<span>The rest is the same. So the ratio of their surface areas would be </span>

<span>4 * pi * 4r^2 divided by </span>
<span>4 * pi * r^2 </span>

<span>or 4.</span>
7 0
3 years ago
Find the product in its simplest form<br><br> 2/5 * 3/7
Mamont248 [21]

Answer:

6/35

Step-by-step explanation:

I just used my calculator...

6 0
2 years ago
Read 2 more answers
Other questions:
  • I need help with 11 and 12
    10·1 answer
  • What is the equation of the line that has a slope of -3 and passes through the point (4,-2)
    9·1 answer
  • Eugene spent $25 on a magazine and some candy bars. If the magazine cost $4 and each candy bar cost $3 then how many candy bars
    14·1 answer
  • Question is in picture
    7·1 answer
  • The perimeter of a rectangular cattle feeding area is 100 meters. The
    7·1 answer
  • Think of all your favorite movies or games. Is their digital animation present? How do you think that it affected the movie or g
    7·2 answers
  • "-3x" + 5 &lt; "-10" Inequality 2: 7x + x - 4 &gt; 28 Which of the following values makes BOTH inequalities TRUE? Select all tha
    13·1 answer
  • Please solve this question
    6·2 answers
  • Solve (x + y +2)(y + 1)
    8·2 answers
  • Consider this figure. 11 1/2 in 10 in 20 in​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!