2 x 3 - (2-10) + (2 x 4) =
6 - (-8) + 8
6 + 8 + 8 = 22
So the answer would be g, 22.
Answer:
E
Step-by-step explanation:
I took the test too!
Answer:
The function is A = 10√r
Step-by-step explanation:
* Lets explain the meaning of direct variation
- The direct variation is a mathematical relationship between two
variables that can be expressed by an equation in which one
variable is equal to a constant times the other
- If Y is in direct variation with x (y ∝ x), then y = kx, where k is the
constant of variation
* Now lets solve the problem
# A is varies directly with the square root of r
- Change the statement above to a mathematical relation
∴ A ∝ √r
- Chang the relation to a function by using a constant k
∴ A = k√r
- To find the value of the constant of variation k substitute A and r
by the given values
∵ r = 16 when A = 40
∵ A = k√r
∴ 40 = k√16 ⇒ simplify the square root
∴ 40 = 4k ⇒ divide both sides by 4 to find the value of k
∴ 10 = k
- The value of the constant of variation is 10
∴ The function describing the relationship of A and r is A = 10√r
If it’s red rectangle to blue then it’s 1/2
If it’s blue rectangle to red then it’s 2
Answer:
40%
Step-by-step explanation:
multiply 80 by.40 you will get 32 hope this helps god bless