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sattari [20]
2 years ago
15

Please help me asap !!

Mathematics
1 answer:
Natasha2012 [34]2 years ago
5 0

Answer:

3.5

Step-by-step explanation:

(42 - 14)/(12 - 4) = 28/8 = 7/2 = 3.5

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What is probability? i know its just that i don't quite understand it.
Margarita [4]
Probability is the extent to which an event is likely to occur. It is the likelihood of sth to happen.
In maths it is measured by the ratio of the favourable cases to the whole number of cases possible.


For instance
there are 5 black balls and 2 white balls of same shape and size.
If you picked one out of a bag it is more likely for you to pick a black one rather than a white one as it has more in number.
So black balls have more probability.



And to find out probability of this above given event,

Sample space n(S) = 5+2 = 7
No. Of black balls n(B) = 5
No. Of white balls n(W) = 2

Probability of black ball p(B) = n(B)/n(S)
=5/7

And in the same way, p(W) = 2/7




5 0
4 years ago
Write the expression without using exponents (-2y)^4
JulsSmile [24]

Answer:

16yyyy

Step-by-step explanation:

Getting rid of exponents:

  • (-2y)^4 =
  • (-2)^4*y^4 =
  • 16yyyy
5 0
3 years ago
Read 2 more answers
78 is what percent of 110
irinina [24]

Answer: 70.909090909091%

Step-by-step explanation: Reading through the problem we have <em>78 is</em>, that's 78 equals, <em>what percent</em>, x/100, <em>of 110</em>, times 110.

It's important to understand that <em>percent</em> means over 100 so what percent would simply mean <em>x/100</em> or any variable but I will be using x.

So we have the equation 78 = \frac{x}{100} *110

So cross canceling the 110 and 100 to 11 and 10, we have 78 = \frac{11x}{10}

Multiply both sides by 10 to get rid

of the fraction and we have 780 = 11x.

Now divide both sides by 11 and 70.909090909091 = x.

So, 78 is 70.909090909091% of 110.

Work is attached in the image provided.

8 0
3 years ago
Complete the equation of the line through (-6,5) and<br> (-3, -3).<br> Use exact numbers.
Arada [10]

Answer:

24

Step-by-step explanation:

6 0
3 years ago
Raju covers a certain distance in 1 hour and sham covers the same distance in 2 hours , who travels in a higher speed?
dimulka [17.4K]

Answer: Raju travels at a higher speed.

Step-by-step explanation:

Speed =\dfrac{Distance}{Time}

Speed inversely proportional to time.

As time taken to cover a particular distance decreases the speed will increase.

Raju covers a certain distance in 1 hour.

Sham covers the same distance in 2 hours.

1< 2

Thus Raju travels at a higher speed.

5 0
3 years ago
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