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mariarad [96]
3 years ago
10

Johnny heads to the store with $20. He spends $7 on a t-shirt, then buys some candy bars for $1.50 each. How many candy bars cou

ld he buy if he spent all of his money?
Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
4 0

Answer:

8

Step-by-step explanation:

20-7=13

13^1.50=8.66666666667

Round up with 8 or 9

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The probability of rain =0.2, sun=0.3,cloud=0.5. What is the probability of rain and sun over a two day period?
svp [43]

Answer:

0.2752512

Step-by-step explanation:

The formula you are looking for is the binomial probability:

               

                n!

P (X) = ------------    * (P)^X  * (q)^n - X

           (n- X)! X!    

For your particular problem:

n=7

X=2

 

q = 1-p = .8

7!/(5!*2!)*(.2)^2*(.8)^5 = 0.2752512

Hope this helps, have a nice day/night! :D

6 0
2 years ago
The graph shows the data points in the table and the exponential regression model associated with the data ?
Ipatiy [6.2K]
From the graph, it is obvious that the trend is decreasing from 100 on day 2, to 1 on day 10. So, the answer could either be A or C. The question would be how fast is it decreasing? To illustrate this, let's find the difference of consecutive data:

100 - 26 = 74
26 - 6 = 20
6 - 2=4
2-1=1

It must not be an additive rate because there is no common difference. Let's illustrate if the trend is in multiplicative rate:

100/26 = 3.85
26/6 = 4.33
6/2 = 3
2/1 = 2

More or less, they have a common divider. Hence, the decreasing rate is in multiplicative rate. The answer is A.
6 0
3 years ago
Read 2 more answers
There were 20 boys and 20 girls in a chorus. What is the ratio of boys to girls
aliya0001 [1]

Answer:

1:1

Step-by-step explanation:

3 0
3 years ago
Which table shows y as a function of x
ANTONII [103]
The answer should be C :) in order for there to be a function, first rule is the x number cannot repeat
3 0
3 years ago
Find the perimeter of a square that is 3inches on a side. 7 inches 15 inches 12 inches 30 inches
In-s [12.5K]

Answer:

12 inches

Step-by-step explanation:

A square has 4 sides with the same length.

The perimeter of a square is the 4 times the length of one side.

perimeter = 4s

perimeter = 4 * 3 inches

perimeter = 12 inches

4 0
3 years ago
Read 2 more answers
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