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
hodyreva [135]
2 years ago
7

The 7th grade class experienced a 15% decrease in enrollment.Last year,the 7th grade class had 280 students. How many how many s

tudents are enrolled in the 7th grade this year?
Mathematics
2 answers:
motikmotik2 years ago
8 0

Answer:

232 students are enrolled this year.

Step-by-step explanation:

Since 15% of the enrollment of the previous year is gone, you must take 15% of the total number of students and subtract that from the total number of students.

280*0.15=42

This tells us that the 15% decrease means there are 42 fewer students enrolled this year. Now you would just subtract 42 from 280.

280 - 42 = 232

viktelen [127]2 years ago
6 0

Answer: 238

Step-by-step explanation: 10% of 280 is 28. 1% of 280 is 2.8. Multiply 2.8 times 5 and you get 14. Add 10% and 5% (28+14) and you get 15% which is 42. Subtract 42 from 280 and you get 238.

You might be interested in
HELLPP MEMMMEMEMEE pls
-Dominant- [34]

Answer:

60

Step-by-step explanation:

Look at the attachment

4 0
3 years ago
3 .912+s=5.313 evaluate
taurus [48]

Answer:

s= 1.401

Subtract 5.313 from 3.912 :D

3 0
2 years ago
1 in/2.54 cm = 90 in/? cm
nirvana33 [79]
1/2.54 = 90/x

Cross multiply
(1)x = (2.54)(90)

x would equal 228.6

The answer would be 90 in/ 228.6 cm.
7 0
3 years ago
Find the length of side a.<br> 10<br> A<br> 6<br> A. 4<br> B. 64<br> C. V 136<br> D. 8<br> PREVIOUS
dedylja [7]

Answer:

D .8

Step-by-step explanation:

hypotenuse (h) = 10

base (b) = 6

perpendicular (p) = a= ?

We know by using Pythagoras theorem we get

p = √ h² - b²

a = √ 10² - 6²

a = √ 64

a = 8

Hope it will help :)

8 0
2 years ago
A manufacturer produces bearings, but because of variability in the production process, not all of the bearings have the same di
Lena [83]

Answer:

Proportion of all bearings falls in the acceptable range = 0.9973 or 99.73% .

Step-by-step explanation:

We are given that the diameters have a normal distribution with a mean of 1.3 centimeters (cm) and a standard deviation of 0.01 cm i.e.;

Mean, \mu = 1.3 cm            and           Standard deviation, \sigma = 0.01 cm

Also, since distribution is normal;

                 Z = \frac{X -\mu}{\sigma} ~ N(0,1)

Let X = range of diameters

So, P(1.27 < X < 1.33) = P(X < 1.33) - P(X <=1.27)

  P(X < 1.33) = P( \frac{X -\mu}{\sigma} < \frac{1.33 -1.3}{0.01} ) = P(Z < 3) = 0.99865

  P(X <= 1.27) = P( \frac{X -\mu}{\sigma} < \frac{1.27 -1.3}{0.01} ) = P(Z < -3) = 1 - P(Z < 3) = 1 - 0.99865

                                                                                            = 0.00135

 P(1.27 < X < 1.33) = 0.99865 - 0.00135 = 0.9973 .

Therefore, proportion of all bearings that falls in this acceptable range is 99.73% .

7 0
3 years ago
Other questions:
  • On top of a hill, a rocket is launched from a distance 80 feet above a lake. The rocket will fall into the lake after its engine
    8·1 answer
  • Compare using &lt;, &gt;, or =.<br><br> 1/2 ___ 5/10 <br><br> &lt;<br> &gt;<br> =
    7·1 answer
  • What will the temperature be in degrees Fahrenheit when it is 80° Celsius outside?
    7·2 answers
  • The amount of money and dollars that it cost to purchase x square feet of the carpet is given by f(x)= 8x the insulation feet is
    8·1 answer
  • A ramp was constructed to load a truck. If the ramp is 10 feet long and the horizontal distance from the bottom of the ramp to t
    12·2 answers
  • Round 688. to the nearest hundred. Enter your answer in the box below.​
    5·2 answers
  • 120 children go on a holiday. The ratio of the number of girls to the number of boys is 3:5. On Sunday, all the children either
    10·1 answer
  • 15 points, needs to be done ASAP! Any joking around will lead to a report.
    10·2 answers
  • Round to the nearest hundredth
    7·1 answer
  • Can u tell me the the answer to 44×4 multiply in columns
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!