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
xz_007 [3.2K]
3 years ago
8

Which measure of center (median or mean) best describes the following data about prices of

Mathematics
1 answer:
krok68 [10]3 years ago
4 0

Answer:

$16

Step-by-step explanation:

mean is the average cost of those earrings

add all of them together and divide by how many earrings

4+50+10+12+10+20+12+10 = 128

128/8= 16

You might be interested in
Two teams of movers are lowering a piano from the window of a 10 floor apartment building. The rope breaks when the piano is 30
GuDViN [60]

By solving the motion equations for the piano, we will see that they have 0.7 seconds to react.

<h3>How to find the motion equation for the piano.</h3>

So the piano is in a free fall from a height of 30m.

The motion equations will be given by:

  • The only force acting on the piano will be the gravitational one, thus the acceleration of the piano is the gravitational acceleration: a(t) = -9.8m/s^2 (Where the negative sign is because it is falling down).
  • To get the velocity we integrate over time, because the piano has no initial velocity, the constant of integration is zero: v(t) = (-9.8m/s^2)*t
  • To get the position equation we integrate again, here the initial position is 30 meters above the ground, so that will be our constant of integration: p(t) = (1/2)*(-9.8m/s^2)*t^2 + 30m

<h3>How long takes to fall?</h3>

We want to find the value of t such that the position is equal to zero, so we need to solve:

0 = (1/2)*(-9.8m/s^2)*t^2 + 30m

30m = (1/2)*(9.8m/s^2)*t^2

2*30m/(9.8m/s^2) = t^2

6.1 s^2 = t^2

√(6.1 s^2) = 2.5s = t

This means that the piano falls to the ground in 2.5 seconds.

But the workes notice it when the piano is 14 meters above the ground, it happens when:

p(t) = 14m =  (1/2)*(-9.8m/s^2)*t^2 + 30m

Solving that we get:

30m - 14m =  (1/2)*(9.8m/s^2)*t^2

2*16m/(9.8m/s^2) = t^2

3.27s^2 = t^2

√(3.27s^2) = t = 1.8s

So the piano falls in 2.5 seconds, and the works notice it 1.8 seconds after it starts falling, meaning that they have:

2.5 - 1.8 = 0.7 seconds to react.

If you want to learn more about motion equations, you can read:

brainly.com/question/2473092

4 0
2 years ago
Factorise:<br> 14x^2-10x+12
Oksana_A [137]

Answer:

14x^-10x+12+2=-140x+14

Step-by-step explanation:

Very simple. Just add/multiply the like terms, (14x^-10x & 12+2), and then you'll get the answer, but since 140x and 14 are not like terms, the answer stays as 140x+14.

6 0
2 years ago
Write this fraction as a sum or difference.<br><br> 17. 9p-63
Alex787 [66]
P=7 because when you do bring 63 on the other side it'll be 9p=63 and after that divide both sides by 9 and you'll have p=7
5 0
3 years ago
2 Ponts
TiliK225 [7]
Answer:
B) 150

Explanation:
...
7 0
3 years ago
F'(x + h) - f(x)<br> f(x) =<br> 5 x<br> +<br> 7<br> +<br> 3
weqwewe [10]

Answer:

X=4

Step-by-step explanation:

i Think

7 0
3 years ago
Other questions:
  • Jason eats 10 ounces of candy in 5 days. How many pounds does he eat per day?
    11·2 answers
  • Sandy has $200 in her bank account.
    15·1 answer
  • Need help on #25 please!! Show your work
    6·2 answers
  • Jim’s football team started a play on the 50 yard line. On the first play, the team had a 7-yard gain. On the second play, they
    8·2 answers
  • What are the domain and range and asympote of h(x)=6^x -4?
    11·1 answer
  • 4. What is the area of a square with side lengths of 3/5 units?
    11·1 answer
  • How do you work out "2(c+4)="
    6·1 answer
  • A cube has a volume of 45 cubic centimeters. Find its volume if one of its dimensions were doubled, a second dimension was tripl
    11·1 answer
  • Which expression is equivalent to 45a-10b
    9·2 answers
  • PLEASE HELP ME ON THIS!!!!!!!ASAP!!!!!!!!!!!!!!!!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!