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Luda [366]
3 years ago
11

Help ;/ 4.3 is 12.5% of what number?

Mathematics
2 answers:
zvonat [6]3 years ago
6 0
4.3 is 12.5% of 290.7
So...
X% times 4.3 equals 12.5
12.5 divided by 4.3 would give you 2.9069...
Now... it’s a percentage so multiply that by 100 and that would give you 290.69 or 290.7.
Aleks04 [339]3 years ago
4 0

Answer:

let x represent the number

12.5n/100=4.3

12.5n=4.3x100

12.5n=430

n= 430/12.5

n= 34.4

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What does this equal -7g = -98
malfutka [58]

Divide both sides of the equation by -7.

\frac{-7g}{-7} =\frac{-98}{-7}

g = 14

5 0
3 years ago
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Determine the level of measurement of the variable. Positions of runners in a race. A nominal. B ratio. C interval D. Ordinal
Naddik [55]

Answer: D. Ordinal

Step-by-step explanation:

There are four levels of measurements scales of a variable :-

  1. Nominal scale : Used for categorical data on the basis of the characteristic like sex, religion color, etc.
  2. Ordinal scale : Used to order the attributes as per their ranks such as First ,Second , Third and so on.
  3. Interval scale : Used when the difference between any two values can be calculated and has meaning such as Fahrenheit scale to measure temperature.
  4. Ratio scale : It accommodates all the qualities of the 3 measures and in addition a "true zero" point. For example : Age.

<em>Positions of runners in a race comes in ordinal scale because we need to order them with their respective rank</em>.

So, the correct option is D. Ordinal

4 0
3 years ago
Quick algebra 1 assignment for some points and brainliest!
Juli2301 [7.4K]

1. The 100 prisoner experiment: 100 prisoners are about to be executed (you can use paper stick figures to model 100 prisoners, or you can do about 10), but the warden has agreed to allow all prisoners to be commuted to a 6-month sentence if they can pass one game. The game states that 100 pieces of paper with each of the prisoner's numbers are to be randomly shuffled into boxes that have random prisoner's numbers (where the number on the paper does not match the number on the boxes.) Each prisoner is allowed to open 50 boxes to find their number such that they have a \frac{1}{2} chance of finding their number. If you find your number, you are cleared to another room to wait. If you don't, then you've messed up huge. If even one prisoner does not find their number, all the prisoners die. If all of the prisoners find their numbers, they all get 6-month sentences instead. The chance of all the prisoners randomly finding their numbers is (\frac{1}{2})^{100}, which is about a 0.0000000000000000000000000000008% chance. 30 zeros after the decimal placement. For reference, two people have a better chance of picking up the same grain of sand from any of the beaches in the world than finding their numbers randomly.

The Vickrey Auction can be modeled into an experiment by testing people's psychological thinking. You can do this with any of your friends. In a Vickrey auction, you put your bids into a closed letter. For an item, the highest bidder wins the auction, but does not pay what he or she put their bid under in the auction, but rather pays what the second bidder had bidded. It teaches people to be more honest, because if you bid the highest and win, you pay the second-highest bidder's payment, which could also be almost equally as high and could cost you a fortune for an undervalued item.

Another great experiment you can do is to measure the different unsynchronizations of analog clocks that are not close together. Scientists have measured atomic clocks that are just a millimeter apart that start ticking in different measures.

2. I select the 100-prisoner experiment.

3. A curved graph like -x^2 would fit perfectly.

4. A quadratic function would fit my experiment the best. The best graph to use would be y = -x^2. An equation with a large curve would be the best for this type of experiment to graph success and failure. More than three quarters of my graph wouls be full of failure and maybe a little more than 10% would be full of success if repeated over 100,000 times. I am not too sure though.

4 0
1 year ago
Which criterion can be used to prove ABC and ADC are congruent?
exis [7]

Ratio of the heights of two similar cones is 7/9


what is the ratio of their radii? ratio of their volumes??


TIA


If they are similar, the ratio of the radaii is the same.


Now consider that the volume of a cone is 1/3 PI r^2 * h


So the volume ratio will have a (7/9)^2 * 7/9 ratio

7 0
3 years ago
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Ket [755]

Answer:

The probability that a randomly chosen light bulb will last less than 900 hours is 0.1587.

Step-by-step explanation:

The life span of these light bulbs is normally distributed with a mean of 1000 hours and a standard deviation of 100 hours

Mean = \mu = 1000 hours

Standard deviation =\sigma = 100 hours

We are supposed to find the probability that a randomly chosen light bulb will last less than 900 hours.i.e. P(x<900)

So, Z=\frac{x-\mu}{\sigma}

Z=\frac{900-1000}{100}

Z=-1

P(x<900)=P(z<-1)=0.1587

Hence the probability that a randomly chosen light bulb will last less than 900 hours is 0.1587.

4 0
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