This value of "a" is exactly the y-coordinate of the vertex of the parabola
y = x%5E2+%2B+4x++-+31.
To find it, complete the square:
x%5E2+%2B+4x++-+31 = %28x%2B2%29%5E2+-+4+-+31 = %28x%2B2%29%5E2+-+35.
So, this value of "a" is a = -35.
Figure. Plot y = x%5E2+%2B+4x++-+31.
90^2-54^2=5184
root 5184=72
pr=72
X to power of 3 + 5 is how you would write it
Answer:
2.) x=8
3.) option C
Step-by-step explanation:
#2.) 4x+4=9x-36
you take 4x from both sides. 4=5x-36
add 36 to both sides 40=5x
simplify 8=x
x=8
#3.) 7x+5=4x+5+3x
7x+5=7x+5 simplify
take 7x from both sides 5=5
take 5 from both sides 0=0
infinite amount of answers
To simplify you use order of operations or PEMDAS
P- Parenthesis
E- Exponents
M- Multiplication
A- addition
S- Subtraction
8-6(3)+13
There's parenthesis so the first thing we have to do is multiply 6 by three which is 18 so then our expression is
8-18+13
since it's just subtraction and addition you can go in any order
8-31
-23
-23 is your answer
