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
Andreyy89
3 years ago
14

The mean of twenty numbers is 42. If four of the

Mathematics
1 answer:
ehidna [41]3 years ago
4 0

Answer:

mean of other sixteen numbers is 40

Step-by-step explanation:

let the total of 20 numbers be x

x/20 = 42

20×x/20 =42×20

x=840

let the total of four numbers be y

y/4=50

4×y/4 = 50×4

y=200

so as to get the difference of x - y

=840-200

=640

the average of sixteen numbers

=640/16

=40

therefore the mean of sixteen numbers is 40

You might be interested in
A new car is purchased for $47, 000 and over time its value depreciates by one half
andrey2020 [161]

Answer:

$1500

Step-by-step explanation:

you can figure it out by going in increments of 4.5 years because that is the info you have from the problem so

47000 4.5 years later is 23500

9 years = 11750

13.5y = 5875

18y = 2937.5

22.5 years later is 1468.75

22.5 years is about 23 years and to the nearest hundred dollars that is $1500 so that is the answer

Hope this helps! :)

5 0
2 years ago
Read 2 more answers
Solve for x.<br> 9<br> 2x-111<br> X<br> = [?]
VashaNatasha [74]

Answer:

x=94

Step-by-step explanation:

I hope I'm correct. Here's my explanation: x+9 and 2x-111 would equal 180, hence the line (supplementary). So x+9+2x-111=180

x=94

hope this helps.

5 0
3 years ago
Read 2 more answers
G
Oxana [17]

Answer: The measurement of angle B is 34. The measurement of angle C is 108. The measurement of angle F is 72.

Step-by-step explanation:

4 0
3 years ago
John has a piece of clay that weighs 12 1/2 pounds. He divides the clay into 5 equal pieces. How much does each piece weigh?
djyliett [7]

Answer:

2.44

Step-by-step explanation:

12 1/2 / 5 =2.44

3 0
3 years ago
[[ 20 POINTS IF YOU ANSWER THIS QUESTION CORRECTLY. ]]
dezoksy [38]

Answer: the height of the kite is 106.065 ft

Step-by-step explanation:

The length of the kite represents the hypotenuse of the right angle triangle. The height of the kite represents the opposite side of the right angle triangle.

To determine x, the height of the kite, we would apply the sine trigonometric ratio which is expressed as

Sin θ = opposite side/hypotenuse

Therefore,

Sin 45 = x/150

Cross multiplying, it becomes

x = 150Sin45 = 150 × 0.7071

x = 106.065 ft

3 0
3 years ago
Other questions:
  • Some types of algae have the potential to cause damage to river ecosystems. Suppose the accompanying data on algae colony densit
    13·1 answer
  • Someone pls help me w this question for a brainliest :))
    5·1 answer
  • If Ana devotes all her time to making fudge, she can make 3 pounds of fudge an hour, and if he devotes all her time to making to
    5·1 answer
  • Pleas help me I have so much more left to do
    11·1 answer
  • Simplify.
    6·2 answers
  • Find the surface area of the rectangular prism.<br> 15 cm<br> 3 cm<br> 5 cm
    7·1 answer
  • Vince is trying to fit two boxes into the trunk of his car. One box is 1/2 of a foot tall and the other is 2 4/5 feet tall. Stac
    9·2 answers
  • a boat travels 45 minutes at a speed of 8 mph. then the boat travels 1.5 times faster for 1/3 hr. how many miles do the boat tra
    15·1 answer
  • Convert the equation from rectangular to polar from x^2+Y^2=5y
    8·1 answer
  • Can someone answer this correclt just need
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!