Answer:
Option B
Step-by-step explanation:
Speed is distance moved per unit tine and is expressed as s=d/t
Making d the subject then
d=st
Where d is distance, s is speed and t is time taken in time.
Conversion
1 hour has 60 minutes hence 45 mins converted to hours will be 45/60=0.75
Substituting 0.75 hours for t and 170 mph for s then
d=0.75*170=127.5 miles due North
However, tge plane had initially moved 12.5 miles hence the relative distance due North will be 127.5-12.5=115 miles due North
<span>86.8954776543 rounded to the nearest millionth is 86.895478
The order after the decimal point goes like this:
tenths, hundredths, thousandths, ten thousandths, hundred thousandths, millionth</span>
In the picture below, h is height of building and x is the distance the base of the ladder is away from the base of the building.
We use trigonometry to find x, particularly the cosine function.
cos(29.37°) = x/32
cos(29.37°)(32) = x
27.8870633052 = x
We now round off to the nearest hundredths, which means to two decimal places.
27.89 feet = x
Answer:
1. x = 5 2. y = 4 3. x = -2
Step-by-step explanation:
2x - y = 9 -5x + 2y = 13 3x + 4y = -6
<u>4x + y = 21</u> <u>5x + y = -1 </u> <u> 7x(-1) + 4y(-1) = -14(-1)</u> <(multiply all by -1)
<u>6x = 30 </u> <u>3y = 12</u> <u> -4x = 8</u>
6 6 3 3 4 4
x = 5 y = 4 x = -2
1/2 (-4x + 12)= 26
-4x + 12= 52
-4x = 52 - 12
-4x = 40
x= 40/-4
x= -10
The answer is B. x = -10
