Your body eliminate about._ of BAC per hour

Answers

Answer 1

Answer: Your body eliminates about .015 of BAC per hour.

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Divide 7/24 by 35/48 and reduce the quotient to the lowest fraction.A. 4/10B. 2/5C. 42/48D. 245/1152
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Round 446,221 to the nearest ten

Answers

446,221 to the nearest ten is 446,220. This is because 1 is less than 5, and it’s only when a number is more than or equal to 5 that you round up to the nearest 10.

An object is thrown upward at a speed of 121 feet per second by a machine from a height of 8 feet off the ground. The height h of the object after t seconds can be found using the equation h = -16t^2+121 t+8 When will the height be 17 feet?

When will the object reach the ground?

Answers

17=-16t^2+121t+8
16t^2-121t+9=0
this is a quadratic.
it solves to 7.487seconds and 0.075 seconds.

0=-16t^2+121t+8
16t^2-121t-8=0
this solves to 7.628 and -0.066. obviously the time cant be negative so the only real answer is 7.628 seconds

Sum of the angles of a polygon with 10 sides is -------

Answers

Answer:

1440°

Step-by-step explanation:

Each exterior angle of a 10 sided regular polygon =360/10=36°

Each interior angle = 180°-36° =144°.

Sum of all interior angles = 144°×10. = 1440°.

An equation is shown below:3(4x − 2) = 1

Which of the following correctly shows the steps to solve this equation?

Step 1: 12x − 2 = 1; Step 2: 12x = 3
Step 1: 12x − 6 = 1; Step 2: 12x = 7
Step 1: 7x + 1 = 1; Step 2: 7x = 0
Step 1: 7x − 5 = 1; Step 2: 7x = 6

Answers

12x-6=1
12x=7
---------

Answer:

1: 12x − 6 = 1

2: 12x = 7

✔

Step-by-step explanation:

Let f(x) = x^2 + 6 and g(x) = x+8/x. Find (g ° f)(-7)

Answers

(g o f)(x)=g(f(x))

basically put f(x) for every x in g(x) or evaluate f(x) for taht given value of x and then sub that for x in g(x)
evaluate woould be easier
f(-7)=(-7)^2+6
f(-7)=49+6
f(-7)=55

sub for x in g(x)
g(55)=55+8/55
g(55)=63/55
g(55)=1.145454545454

answer would be 63/55

Short Answer: 55.145454545...
Working Out: gof(x) = (x^2 + 6) + 8/(x^2 + 6)
gof(-7) = ((-7)^2 + 6) + 8/((-7)^2 + 6)
= (49 + 6) + 8/(49 + 6)
= 55 + 8/55
= 55 + 0.145454545...
= 55.145454545...

A scooter costs $160. For each question, show your reasoning. The cost of a pair of roller skates is 20% off the cost of the scooter. How much do the skates cost? a) $128 b) $32 c) $192 d) $64