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Semenov [28]
3 years ago
8

A weatherman predicted 17 inches of snow. The town actually got 1 and 1/2 feet of snow. By what percent was the weatherman’s pre

diction off?
Mathematics
2 answers:
Maslowich3 years ago
5 0

Answer:

1 1/2 feet of snow= 18 inches

17/18 is around .94 so there’s .06 that the weatherman was off on.

.06 = 6%

Step-by-step explanation:

Igoryamba3 years ago
5 0
8.3% He was off by one inch. 1/12 times x/100 equals 8.333%
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Lucy offers to play the following game with Charlie: "Let us show dimes to each other, each choosing either heads or tails. If w
Darya [45]

Answer:

(a)Charlie is right

(b)$0

Step-by-step explanation:

(a)A game is said to be a fair game when the probability of winning is equal to the probability of losing. Mathematically, a game is said to be fair when the expected value is zero.

In the game, the possible outcomes are: HH, HT, TH and TT.

Charlie wins when the outcome is HH, TT

  • P(Charlie Wins)=2/4
  • P(Charlie Losses)=2/4

Lucy wins when the outcome is HT or TH

  • P(Lucy Wins)=2/4
  • P(Lucy Losses)=2/4

Therefore, the game is fair. Charlie is right.

(b)

If the outcome is HH, Lucy pays $3.

If the outcome is HT or TH, Lucy gets $2.

If the outcome is TT, Lucy pays $1.

The probability distribution of Lucy's profit is given below:

\left|\begin{array}{c|c|c|c}$Profit(x)&-\$3&-\$1&\$2\\P(x)&1/4&1/4&2/4\end{array}\right|

Expected Profit

=(-3 \times \frac14)+(-1\times \frac14)+(2 \times \frac24)\\=$0

Lucy's expected profit from the game is $0.

7 0
3 years ago
Help with this math question please
Step2247 [10]
The base of log is 10. So raising both sides to 10, we get:

10^{0.94} = 10^{ log_{10} x} \\  \\ 
 10^{0.94}=x \\  \\ 
x= 8.71

S, rounding of to nearest hundredth, the value of x in the equation 0.94 = log(x) comes out to be 8.71.

3 0
3 years ago
After the 4th half life how much of the sample is left if the mass is 100g.
vazorg [7]

Answer:

\huge\boxed{\sf 6.25 \ g}

Step-by-step explanation:

After every Half life , Half of the mass is left.

After 1st Half life = 100 g / 2 = 50 g

After 2nd Half life = 50 / 2 = 25 g

After 3rd Half life = 25 / 2 = 12.5 g

After 4th Half life = 12.5 / 2 = 6.25 g

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
6 0
2 years ago
At sunrise the temperature in Anchorage was -4°F. By 2pm the
Ainat [17]
The answer is 19 degrees F.

15 - (-4) = 19
6 0
3 years ago
What is the value of x in the equation −x = 4 − 3x + 6?<br><br> 5<br> 10<br> −5<br> −10
Vanyuwa [196]
The answer is x=6
Hope this helps
7 0
3 years ago
Read 2 more answers
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