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Alika [10]
3 years ago
6

Simon tosses a coin 20 times. The coin lands heads up 7 times. Based on these results, how many times can Simon expect the coin

land heads up in the next 100 tosses?
Answer choices:
28
21
14
35
Mathematics
1 answer:
3241004551 [841]3 years ago
8 0
I believe the answer would be 35. hope this helps.
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7^16/7^12=7^-18/? what is the missing denominator
creativ13 [48]
\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{  n}}}\implies \cfrac{1}{a^{-{{  n}}}}\\\\
-------------------------------\\\\

\bf \cfrac{7^{16}}{7^{12}}=\cfrac{7^{-18}}{x}\implies x\cdot 7^{16}=7^{12}\cdot 7^{-18}\implies x\cdot 7^{16}=7^{12-18}
\\\\\\
x\cdot 7^{16}=7^{-6}\implies x=\cfrac{7^{-6}}{7^{16}}\implies x=\cfrac{7^{-6}\cdot 7^{-16}}{1}\implies x=7^{-6-16}
\\\\\\
\boxed{x=7^{-22}}\implies x=\cfrac{1}{7^{22}}
4 0
3 years ago
Can someone solve this and explain?
stich3 [128]
The Answer would be 32
3 0
3 years ago
2Y - 1.7 =3.3 <br><br> HELP !!!!!
bogdanovich [222]

Answer:

2.5

Step-by-step explanation:

Simplifying

2y + -1.7 = 3.3

Reorder the terms:

-1.7 + 2y = 3.3

Solving

-1.7 + 2y = 3.3

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '1.7' to each side of the equation.

-1.7 + 1.7 + 2y = 3.3 + 1.7

Combine like terms: -1.7 + 1.7 = 0.0

0.0 + 2y = 3.3 + 1.7

2y = 3.3 + 1.7

Combine like terms: 3.3 + 1.7 = 5

2y = 5

Divide each side by '2'.

y = 2.5

Simplifying

y = 2.5

3 0
3 years ago
Read 2 more answers
-5= -4 + b<br> solve for b
Lena [83]

Answer:

-5+4=b

-1=b

so b is equal to -1

6 0
2 years ago
Read 2 more answers
Anna has a 12 quarter 4 dimes and 11 nickel in her piggy bank how much money is in the bank
Irina-Kira [14]

Answer:

$3.95

Step-by-step explanation:

12*0.25=3

4*0.10=0.40

11*0.05=0.55

3+0.40+0.55=$3.95

5 0
3 years ago
Read 2 more answers
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