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
vichka [17]
2 years ago
9

Sixty students got off a school bus. 30% of them were wearing college

Mathematics
2 answers:
antoniya [11.8K]2 years ago
8 0

Answer:

42 students

Step-by-step explanation:

yuradex [85]2 years ago
3 0

A percentage can be converted to a decimal. 30% -> 0.30.

Now multiply 60x0.30, which is 18.

So 18 were wearing sweatshirts. But that's not what we need.

Subtract 60-18, which is 42.

42 were not wearing sweatshirts.

---

hope it helps

You might be interested in
Find the value of x. Then, find the measure of each angle.
Talja [164]

Answer:

 

Step-by-step explanation:

 

8 0
2 years ago
Which of the statements below is true concerning bar​ graphs? Choose the correct answer below.
nordsb [41]

Answer:

C. The height of each bar represents the category's frequency or relative frequency

Step-by-step explanation:

8 0
2 years ago
Find the value of the variable. Then find the angle measures of the polygon.
Anvisha [2.4K]
First set up the equation (sum of the angles is 180)

2x + 2(x-1) + (5x +2) = 180

distribute:
2x + 2x -2 + 5x +2 = 180

combine like terms:
9x = 180
solve for x:

x = 20

SO:

2x° = 2(20) = 40 degrees
2(x-1)° = 2(20) - 2 = 40 - 2 = 38 degrees
5x + 2°= 5(20) + 2 = 100 + 2=102 degrees

check: 40 + 38 + 102 = 180
7 0
3 years ago
How to graph (x-2)(y-3)=0
kolbaska11 [484]

Step-by-step explanation:

here you want to isolate the y.

so what you do in the beginning is divide both sides by x-2.

then, you'll have y-3 = 0

so y = 3

this is a horizontal graph that crosses the y axis and y = 3.

5 0
2 years ago
Assume the random variable X is normally distributed with meanmu equals 50μ=50and standard deviationsigma equals 7σ=7.Compute th
nekit [7.7K]

Answer:

P(35

And we can find this probability with the following difference and using the normal standard table or excel we have:

P(-2.143

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the variable of interest of a population, and for this case we know the distribution for X is given by:

X \sim N(50,7)  

Where \mu=50 and \sigma=7

We are interested on this probability

P(35

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(35

And we can find this probability with the following difference and using the normal standard table or excel we have:

P(-2.143

6 0
2 years ago
Other questions:
  • "What is the length of stack J K with bar on top ? Round to the nearest tenth of a unit.
    10·2 answers
  • The makers of Mini-Oats cereal have an automated packaging machine that is set to fill boxes with 24 ounces of cereal. At variou
    15·1 answer
  • The ratio of boys to girls in a school is 5:8. If the number
    6·1 answer
  • 43 + (x -7) =90 find the value of x
    14·2 answers
  • I need help finding the weather it is continuity or not
    15·1 answer
  • 2x + y + 3z = 19<br> 3x + 2y + 3z = 19<br> X + 4y + 2z = 9<br> What is the value of x?
    13·2 answers
  • Sports team is building a new stadium on a rectangular lot of land. It's a lot measures 10 X by five eggs and the sports field w
    13·1 answer
  • The area of a rectangle is 36 square inches. Its length is 9 inches. What is its width?
    6·2 answers
  • Answer for both boxes please :)​
    7·1 answer
  • Suppose y varies directly with x, and y = 16 when x = -4. Find x when y = 24.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!