Answer:
i would say b
Step-by-step explanation: if they all slept 4 hours a night then all 9 would have a total of 36 and a night would be 1 so 36 to 1
First, we have to identify the right triangle formed
As you can observe, segment AB is divided into two equal parts. We can find one part of AB using the Pythagorean's Theorem
Where c = 15 and b = 12. Let's find a
Then, we know that AB = 2a, so
<h2>Hence, AB is 18 feet long.</h2>
Answer:
2(3x-4y) (2x+4y)
Step-by-step explanation:
2•3²•x²-2⁵•y²
2(2•3²•x⅖ -2⁵•y²)
2 2
Answer:
<h2>
245</h2>
Step-by-step explanation:
1). 91 + 41 + 53 + 54 {Simplify}
2). 138 + 53 + 54 {Simplify}
3). 191 + 54 {Simplify}
4). 245 {Add}
Answer:
Step-by-step explanation:
The ys have to have the same value. That allows you to equate the right side of each y to each other.
-x^2 + 4 = 2x + 1 Subtract the right side from the left side.
-x^2 + 4 - 2x - 1 = 2x-2x +1 - 1 Combine
-x^2 - 2x + 3 = 0 Multiply both sides by - 1
-1(-x^2 - 2x + 3) = 0*-1 Remove the brackets
x^2 + 2x - 3 Factor
(x - 1)(x + 3 )
x - 1 = 0
x = 1
x + 3 = 0
x = - 3
So the line goes through x = 1 or x = - 3
x = 1
y = 2x + 1
y = 2(1) + 1
y = 3
x = - 3
y = 2(-3) + 1
y = - 6 + 1
y = - 5
Does the graph confirm this? See below.
red: y = -x^2 + 4
green: y = 2x + 1
Yes the graph is in agreement.