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3 years ago

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Sally went 3.5 miles per hour on a treadmill for 5 hours. She was sore and decided to take 400 mg of Advil. The half portion sta

ys in her body for 8 hours. How long does it take for the Advil to leave her system?

1 answer:

xenn [34]3 years ago

8 0

Answer:

8 hours

Step-by-step explanation:

it says: The half portion stays in her body for 8 hours.

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ryzh [129]

Answer:

E and D

Step-by-step explanation:

3 0

3 years ago

Convert y =(x+1)(x-9) to vertex form

IgorC [24]

Answer:

y = (x - 4)² - 25

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

To obtain this form use the method of completing the square.

Given

y = (x + 1)(x - 9) ← expand factors using FOIL, thus

y = x² - 8x - 9

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 8x

y = x² + 2(- 4)x + 16 - 16 - 9

= (x - 4)² - 25 ← in vertex form

5 0

3 years ago

Two trains leave the station at the same time, one heading west and the other east. The westbound train travels 14 miles per hou

Sergeu [11.5K]

Answer:

The answer to your question is 166 mi/h

Step-by-step explanation:

Data

ve = rate eastbound train

vw = rate westbound train = ve - 14

distance = d = 900 mi

time = t = 5 h

Formula

v = $\frac{distance}{time} = \frac{d}{t}$

Substitution and simplification

$ve = \frac{900}{5} = 180 mi/h$

Now, substitute this value in the equation of vw

vw = 180 - 14

Result

vw = 166 mi/h

7 0

3 years ago

In the equation y = 2x + 3, if the change in x is 1, the corresponding change in y will be _____.

romanna [79]

Answer:

search it

Step-by-step explanation:

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3 years ago

You estimate the weight of an apple to be 6 ounces. The actual weight of an apple is 4 ounces. What is your percent error?

maxonik [38]

Answer:

150%

Step-by-step explanation:

I hope this helps

7 0

2 years ago