Mr. Mendez ran 13.1 miles at a constant rate for 150 minutes.To find how he ran,you solve the equation 13.1=x•150.What does x represent?

Answers

Answer 1

Answer:

Answer:

His speed in miles per minute

Step-by-step explanation:

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A bird catches a fish and flies 100 yards in a straight line at an angle of elevation x degrees from the ground. After flying for 100 yards the bird drops the fish. The fish lands at a spot y yards horizontally from where the bird caught it. What is x?A.)cos -1 y/100

B.)sin -1 y/100

c.)tan -1 y/100

D.)cos -1 100/y

E.)sin -1 100/y

Answers

Answer: Hello there! The correct answer is A.

If the bird flies 100 yards with an angle of elevation of x from the ground, then you could think this as a tringle rectangle, where the hypotenuse is 100 yards, the opposite cathetus is sin(x)*100 and this represents the height at which the bird dropped the fish, not really useful here.

The adjacent cathetus us 100*cos(x), in this case, you are calculating the displacement adjacent to them (because the angle is with respect to the ground) and knowing that the fish lands in a translated y yards horizontally we could write: y = cos(x)*100

now we want to isolate x:

y/100 = cos(x)

arcos(y/100) = arcos(cos(x)) = x

x = arcos(y/100) (or cos-1(y/100) like in the option A)

then, knowing the value of y, we could obtain the angle x with that equation.

The angle of elevation can be solved using B.)sin -1 y/100, which makes use of trigonometric functions.

Karey is prescribed 600 mg of a medication that decays at a rate of 40% per day, d, according to the equation

Answers

Answer : 7.8%

Karey is prescribed 600 mg of a medication that decays at a rate of 40% per day, d, according to the equation

$m=600(0.6)^d$

Noelle takes same amount before 5 days.

Amount of medication remain in Nelle's body is

$m=600(0.6)^5 = 46.656$

Karey is prescribed 600 mg of a medication

We need to find out what percentage of 46.656 in 600

$(46.656)/(600) =0.07776$

Now multiply it by 100 to get percentage

0.07776 * 100 = 7.8%

Answer:b

Step-by-step explanation:

What is 8.246 rounded to the nearest tenth

Answers

Actually the answer is 8.2

When rounding numbers, look for the number they are asking you to round to the nearest. In this case it's the tenths place.

8.246 the 2 is in the tenths place. Look at the number to the right of the 2.

8.246 the 4 is less than 5 so you have to round down. So therefore your answer is 8.2

Hope this helps. :)

8.3

you round up the with the thousandths place because it is over 5.
now, the 4 in the hundredths place becomes a 5, so you round up the tenths place.
the 2 becomes a 3.

“five and above, give it a shove. four and below, keep it low.” - my 5th grade teacher :)

hope this helps!

21 – 8(w + 3) + 3 + 7w