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kirza4 [7]
3 years ago
11

Toss a coin 200 times. Record the heads and tails as you toss. What were the number of heads after: 10 tosses? 50 tosses? 100 to

sses? 200 tosses?
Mathematics
1 answer:
Otrada [13]3 years ago
4 0

Answer:

10 tosses: 3 heads 7 tails

50 tosses: 27 heads 23 tails

100 tosses: 49 heads 51 tails

200 tosses: 118 heads 82 tails

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Will (-2)^2 and -2^2 have the same solution? why or why not
nexus9112 [7]
Doing this so I can ask sorry
5 0
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Jane is 5 times older than her sister. In 3 years, Jane’s sister will be 1/4 her age. Find the ages now
Korolek [52]

The present age of Jane is 45 years old and present age of her sister is 9 years old

<em><u>Solution:</u></em>

Let the present age of Jane be "x"

Let the present age of her sister be "y"

<em><u>Jane is 5 times older than her sister</u></em>

present age of Jane = 5(present age of her sister)

x = 5y ---------- eqn 1

<em><u>In 3 years, Jane’s sister will be 1/4 her age</u></em>

Age of sister after 3 years = 3 + y

Age of jane after 3 years = 3 + x

Age of sister after 3 years = 1/4(age of jane after 3 years)

3 + y = \frac{1}{4}(3 + x)

Substitute eqn 1 in above equation

3 + y = \frac{1}{4}(3 + 5y)\\\\12 + 4y = 3 + 5y\\\\5y - 4y = 12 - 3\\\\y = 9

Substitute y = 9 in eqn 1

x = 5(9)

x = 45

Thus present age of Jane is 45 years old and present age of her sister is 9 years old

3 0
4 years ago
A softball team won 95% of 120 games. How many games did they win
dmitriy555 [2]

Answer:

114 games

Step-by-step explanation:

0.95 x 120=114

they won 114 games

5 0
3 years ago
Read 2 more answers
The figures below are rectangles. Which polynomial represents the area of the shaded region? HAVE ALL MY POINTS but answer truth
Aleks04 [339]

Answer:

7x - 1

Step-by-step explanation:

Area of the shaded region = area of the large rectangular - area of the small rectangle

Area of rectangle is given as l*w

Area of the large rectangle = l*w = (x + 5)(x - 1)

Expand

= x(x - 1) +5(x - 1)

= x^2 - x + 5x - 5

Area of large rectangle = x^2 + 4x - 5

Area of small rectangle = l*w = (x + 1)(x - 4)

= x(x - 4) +1(x - 4)

=  x^2 - 4x + x - 4

Area of small rectangle = =  x^2 - 3x - 4

Area of shaded region = (x^2 + 4x - 5) - (x^2 - 3x - 4)

= x^2 + 4x - 5 - x^2 + 3x + 4

Collect like terms

= x^2 - x^2 + 4x + 3x - 5 + 4

= 7x - 1

6 0
3 years ago
Justin started eating lunch at 12:23 and finish at 12:45. how much elapsed time while he was eating lunch
ValentinkaMS [17]

Answer:

22 minutes

Step-by-step explanation:

12:45- 12:23

= 22 minutes

4 0
3 years ago
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