I would do this in 2 stages
1. $12.15 + $16.85 = $29
2. $29 + $1.74 = $30.74
Your answer is $30.74
Set it up into a proportion
84 cal/3/4 cups = x/9 cups
84*9 =3/4x
756=3/4x
x=1008 calories
ANSWER: 1008 claories
Answer:
The sample size required is 102.
Step-by-step explanation:
The (1 - <em>α</em>)% confidence interval for population mean <em>μ</em> is:
The margin of error for this interval is:
Given:
<em>σ</em> = 9.2
(1 - <em>α</em>)% = 90%
MOE = 1.5
The critical value of <em>z</em> for 90% confidence level is:
*Use a <em>z</em>-table.
Compute the value of <em>n</em> as follows:
Thus, the sample size required is 102.
Answer:
(3/4, -4), (3/2, -4)
Step-by-step explanation:
We want to find values of x such that f(x) = -4:
-4 = 8x^2 -18x +5 . . . . . . . . set f(x) = -4
-9 = 8(x^2 -9/4x) . . . . . . . subtract 5, factor out the leading coefficient
-9 +8(9/8)^2 = 8(x^2 -9/4x +(9/8)^2) . . . . complete the square
9/8 = 8(x -9/8)^2 . . . . simplify, write as a square
±√(9/8) = x -9/8 . . . . . . divide by 8, take the square root
x = 9/8 ± 3/8 = {6/8, 12/8} = {3/4, 3/2} . . . . . add 9/8 and simplify
These are the x-coordinates of the points with y-coordinate -4.
Two points are (3/4, -4) and (3/2, -4).
Answer:
Therefore the total sale tax will be $ 8.6934
Step-by-step explanation:
Given that, Eric bought a suitcase for $39.95, a garment bag for $79.95 and briefcase for $26.99.
The sale tax on the above items is 6%.
6% sale tax means if a item price $100 then sale tax is $6.
The sale tax of the suitcase is
=$ 2.397
The sale tax of the garment bag
=$ 4.797
The sale tax of the briefcase
=$ 1.4994
Therefore the total sale tax will be = $(2.397+4.797+1.4994)
=$ 8.6934