Chris started with $70 in the savings account
What is the equation representing the scenario?
The equation representing the scenario painted in the question is: one half times x plus 15 equals 50
1/2*X+15=50
X/2+15=50
X/2=50-15
X/2=35
X=35*2
X=70
In short the amount Chris started with in the savings account is $70
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Half the chance of landing tail once(1/2)
Half the chance of land tails four times (1/2 of 1/2 of 1/2 of 1/2)
1/16
The nail will stick to the magnet because it will become magnetized.Also because the north pole in the magnet rearranges the magnet domains inside the steel so that their south poles all point toward the north pole of the permanent magnet
9:16 -> 3:8
How?
Divide each side by 2 (the GCF).
10:12 -> 5:6
How?
Divide each side by 2 (the GCF).
20:16 -> 5:4
How?
Divide each side by 4 (the GCF).
24:36 -> 2:3
How?
Divide each side by 12 (the GCF).
Answer:
The p-value is 0.175
Step-by-step explanation:
We have the null hypothesis 
and the alternative hypothesis 
(two-tailed alternative). Because the sample size is n = 17 and the test statistic is t=-1.421, we know that this last value comes from a t distribution with n-1=17-1=16 degrees of freedom. Therefore, the p-value is given by 2P(T < -1.421) because the p-value is the probability of getting a value as extreme as the observed value and because of the simmetry of the t distribution. Here, T has a t distribution with 16 df and we are using the t distribution because the sample size is small. So, 2P(T < -1.421) = 0.1745
