Answer:
Step-by-step explanation:
Ben is 3 times as old as Daniel and is also 4 years older than daniel. how I'll is Daniel?
2 answers:
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Answer:
When f or g are equivalent to a number you are solving for x. For example b, d, e, f. In the equation g(x) =2x2-5 I assumed 2 was a typo. So, if it's incorrect, please use same steps and just adjust the solution.
Step-by-step explanation:
a)
b)
c)
d)
e)
f)
Answer:
Test: < 20 with normal distⁿ
Hypothesis test:
H0: 20 (Null Hypothesis, H₀ :
= 20 is also correct)
H1: < 20 (Alternative Hypothesis, also called H₁)
This is lower tailed test.
Since sample is large, sample standard deviation can be taken as an approximation of population standard deviation.
x = 19.3
= 11.1
n = 444
significance level, = 0.05 (If no value is given, we take level of 0.05)
Test statistic
= - 1.33
The attached files contains additional information
The Brady family received 1 letter on July 28.
Step-by-step explanation:
Step 1:
Assume a = the number of letters, b = the number of bills, c = the number of ads, and d = the number of magazines.
From the question, they got 15 pieces of mail that day so
They got 5 more magazines than bills so
The got the same number of letters as ads so
They got 3 more bills than ads so
Step 2:
As we have only one equation to solve the values, we need to make every term in terms of a single term.
We make everything in terms of c.
So
Substituting all this in the equation, we get
Step 3:
Substituting c = 1 in other terms, we get
and
As a = 1, they received 1 letter that day.