Answer:
Bottom Right Option
Step-by-step explanation:
Hello!
We can quickly determine if a graph is not a function by seeing if any points are stacked vertically.
In the other three options, we can see that there is one set of points that are stacked vertically. This is not a function, as one x-value can only have one unique y-value.
The bottom right option has no points stacked vertically, therefore it is a function.
Solve for x over the real numbers:
5 x^2 - 21 = 10 x
Subtract 10 x from both sides:
5 x^2 - 10 x - 21 = 0
Divide both sides by 5:
x^2 - 2 x - 21/5 = 0
Add 21/5 to both sides:
x^2 - 2 x = 21/5
Add 1 to both sides:
x^2 - 2 x + 1 = 26/5
Write the left hand side as a square:
(x - 1)^2 = 26/5
Take the square root of both sides:
x - 1 = sqrt(26/5) or x - 1 = -sqrt(26/5)
Add 1 to both sides:
x = 1 + sqrt(26/5) or x - 1 = -sqrt(26/5)
Add 1 to both sides:
Answer: x = 1 + sqrt(26/5) or x = 1 - sqrt(26/5)
First box: b,d,e
second box:a,c
6/319 = 0.0188087774
I used a calculator
or, just use long division
Have a great day!
Stay safe and healthy!
Happy holiday seasons!
May I please have brainliest?
69 divided by 6.80 is 10.147
