Answer:
2.915 × 10^9
Step-by-step explanation:
you count the from right to left since its a positive number until you get one number in front. That's where you place your decimal. Since there's 9 numbers behind the 2 it will be 10 to the power of 9.
Answer:
C
Step-by-step explanation:
The range is the values of y that extend from the vertex downwards
The vertex = (- 2, - 1) → y = - 1
range is (- ∞, - 1 ]
Answer:
Betina is 
tall
Step-by-step explanation:
let
x ----> Brian's height
y ----> Bonnie's height
z ----> Betina's height
we know that
so
substitute the value of x
substitute the value of y
therefore
Betina is tall
Answer:
B
Step-by-step explanation:
I believe the answer is B because if we multiply the top equation by 6, we get 48x + 30y = -42, and if we multiply the bottom equation by -5, we get
35x - 30y = 20. So now, if we add it all together, then the positive 30y and negative 30y cancel out aka it equals 0, and thus the variable y is gone, satisfying the requirement that the problem asks for ("Which of these strategies would eliminate a variable...").
I hope this helped, and if it's correct, I'd appreciate if you marked my answer as Brainliest :)
Answer:
the probability that a randomly selected duck weighs more than 1.8 kg is 5-10%
