Answer:
399.9 seconds
Step-by-step explanation:
First, do 20 divided by 150 to get the unit rate of how many seconds it takes for one meter and get 0.1333.
Next, multiply 0.1333 by 3,000 so you can get how long it takes for her to bike 3,000 meters and get 399.9.
Answer:
15
Step-by-step explanation:
10x - 23 + 10x - 23 + 106 = 360
20x + 60 = 360
20x = 300
x = 15
9u means you're multiplying 9 into that vector, both components. Same with the 2v. 9*3 = 27 and 9*-1 = -9, so your new vector u is <27, -9>. Now let's do v. 2* -6 (twice) = -12, so your new v vector is <-12, -12>. Add those together now, first components of each and second components of each. 27 + (-12) = 15; -9+(-12)=-21. So the addition of those gives us a final vector with a displacement of <15, -21>
Answer:
C.
Step-by-step explanation:
When you check the point that is on X, it is a little over halfway to the point 1,2. It would be like 1,1.5 or 1,1.6.
5/3 is the equivalent to 1.6 so that answer would make the most sense.
5*30 = 150
9*30 = 270
Since the ratio is 5:9 you have to multiply both numbers in the ratio by the same constant.
I just started multiplying by 10, then 20, then 30 until I got numbers that had a difference of 120.
There are 150 boys.
Setting up an equation
5x + 120 = 9x
Solve for x and then multiply the ratio by the x to get the same result.
