Answer:
k = 15 option C
Step-by-step explanation:
y ∝ x
y = kx, where k is the constant of proportionality.
when y=210 and x=14, k=?
k=y/x ;
k = 210/14
k = 15
Hi!
So, it looks like you're doing ratios.
Let's look at 9). If the model car is 4 inches long, and 1 inch equals 4 feet, than the actual car is 16 feet long. We know this because 4x4=16.
11) is also just as simple. If 1 cm is 11 km, and the two cities are 99 km apart, then on the map they are 9 cm apart. 11x9 is 99.
13) This is a 1:2 ratio. Basically, the flagpole's shadow is half of its height. You half the man's height to get a 3 foot shadow.
And, finally, 15)- if the model is 4 inches to the real life train's 3 feet, the actual train is 120 ft long, given that the model is 40 in long. 40x3=120.
I hope this helps! :)
. . (x + 1) . . . . . . (x² + 5x + 4)
---------------- ÷ -------------------- =
(x² + x − 6) . . . . . (x − 2)
. . (x + 1) . . . . . . . (x + 4)(x + 1)
------------------- ÷ -------------------- =
(x + 3) (x − 2) . . . . . (x − 2)
. . (x + 1) . . . . . . . . . (x − 2)
------------------- * -------------------- =
(x + 3) (x − 2) . . . (x + 4)(x + 1)
. . 1 . . . . . . 1
--------- * ---------- =
(x + 3) . (x + 4)
. . . . . 1
------------------- =
(x + 3) (x + 4)
. . . . 1
-----------------
x² + 7x + 12
Answer:
Step-by-step explanation:
6 weeks is 42 days.
6 days/42 days = 1/7
Answer:
D. 99
Step-by-step explanation:
You have to add the previous numbers with the recent number for example we started with 1 and 7 so you add that and get 8 then you add 8 with 7 and get 15, then you add 8 with 15 and get 23 and so on and so forth. this probably doesn't make sense but i'm %100 sure its 99