Answer:
a fixed sum of money paid to someone each year, typically for the rest of their life.
Answer:
The margin of error at 90% confidence is 0.5133 gram.
Step-by-step explanation:
Margin of error (E) = (critical value × sample standard deviation) ÷ sqrt(n)
sample standard deviation = 1.5 grams
confidence level = 90% = 0.9
significance level = 1 - C = 1 - 0.9 = 0.1 = 10%
n (sample size) = 25
degree of freedom = n - 1 = 25 - 1 = 24
critical value (t) corresponding to 24 degrees of freedom and 10% significance level is 1.711
E = (1.711×1.5) ÷ sqrt(25) = 2.5665 ÷ 5 = 0.5133 gram
Any decimal whole number can be written as a whole number multiplied by a power of 10. For example,
3 = 3 × 10⁰
100 = 1 × 10²
15,000 = 15 × 10³
The power of 10 that you need depends on how many trailing zeroes you want to remove.
A number with a decimal point can be written the same way, but the power of 10 is negative:
0.3 = 3 × 10⁻¹
0.01 = 1 × 10⁻²
12.345 = 12,345 × 10⁻³
You can employ this sort of manipulation when you're dividing two real numbers. You end up with the quotient of two whole number, and you just need to keep track of power of 10 you end up with.
For example, consider the fraction
1.23 / 0.456
Rewrite this as
(123 × 10⁻²) / (456 × 10⁻³) = 123/456 × 10¹
where we end up with 10¹ because 10⁻²/10⁻³ = 10⁻²⁻⁽⁻³⁾ = 10³⁻² = 10¹.
Now just compute the quotient 123/456 and multiply that result by 10, which amounts to shifting the decimal point one position to the right. You would end up with
123/456 ≈ 0.269737
so that
1.23 / 0.456 ≈ 2.69737
Answer:
123
Step-by-step explanation:
A+C and E+G will equal 180 separately. Because the lines are parallel we can see that C is equal to G so we can exchange them. Next we have to fill in an equation by using the two equations given which would be 180=9x+15+5x-3 Now solve it
Add alike terms: 180= 14x+12
Subtract 12 to both sides to get operations alone: 168=14x
divide by 14 to get X alone which is 12=x
Now fill in x
9(12)+15= 123
