Answer:
C and D
Step-by-step explanation:
You multiply the first two numbers and add the exponents of the second two while keeping the base number. I'm 99.9% sure. I hope this helps!
You are just taking plus and minus numbers.
You start at 62.3
You go up 13.9
Then you go down - 21.5
End temperature = 62.3 + 13.9 - 21.5
Edm temperature = 54.7 <<<<< answer
Answer:d
Step-by-step explanation:
Answer:
-1/2
Step-by-step explanation:
2(5y + 3) + 4y = -1
2*5y + 2*3 + 4y = -1
10y + 6 + 4y = - 1 {Combine like terms}
14y + 6 = -1 {Subtract 6 form both sides}
14y = -1 - 6
14y = -7 {Divide both sides by 7}
y = -7/14
y = -1/2
Answer:
x = 2.36603 or 0.633975
Step-by-step explanation:
Here we want to solve the quadratic equation using the completing the square method.
2x^2-6x + 3 = 0
divide through by 2 first;
x^2 -3x + 3/2 = 0
x*2 -3x = -3/2
Half the x term will be -3/2 and squaring it is 9/4
we add this to both sides
x^2-3x/2 + 9/4 = -3/2 + 9/4
(x-3/2)^2 = 3/4
Finding square root of both sides
x-3/2 = √(3/4)
x = 3/2 ± √(3/4)
x = 3/2 + √(3/4) or x = 3/2-√(3/4)
which becomes
x = 2.36603 or 0.633975