The slope is m=3
hope this helps
Answer:
153.94
Step-by-step explanation:
c=2r*r
The radius is half of the diameter.
To find the radius you will divide 49 inches by 2.
You should get a total of 24.5
Now that you have your radius you are going to use the circumference formula to solve.
C= 2r*r
C=2(24.5)*(24.5)
type that into the calculator (without the parenthesis) and boom your done!
You answer should be 153.938
then you round to get a total of 153.94
I hope i was able to help!
Answer:
x^2 + 5x - 84 = 0
x = 7
Step-by-step explanation:
let the sister's age = y
sister's age (y) = 5 + x equation 1
xy = 84 equation 2
Make y the subject of the formula in equation 2
y = 84/x
equate equation 1 and 2
84/x = 5 + x equation 3
Multiply equation 3 by x
84 = 5x + x^2
x^2 + 5x - 84 = 0
tjis can be solved using quadratic equation
x^2 -7x + 12x -84 = 0
x(x + 12) -7(x + 12)
x = 7 or - 12
age cant be negative so his age is 7
Answer:
(-111)
Step-by-step explanation:
Answer:
230 mph in 2 hours
Step-by-step explanation:
first i found out how many miles does the train travel in one hour
460 miles ÷ 4 hours
= 115 mph / 115 miles in one hour
the question asks what was the speed of the train when it completed half the distance
half the distance = 1/2 of 460 =230 miles
230 miles is half the distance of the trip
& we know this is correct because earlier we found out that the train travels 115 miles in one hour & in 2 hours it travels 230 miles
115×2=230.
the one thing that i dont quite know is if you say the train is traveling 115 mph or 230 miles in 2 hours .im not sure of tnat .