65 lol buddy i think im right
Answer: a=4 or a= −3, so you can use anyone of the answers.
Step-by-step explanation:
Solve Absolute Value.
|2a−1|=7
We know either 2a−1= 7or 2a−1 = −7
2a−1=7(Possibility 1)
2a−1+1=7+1(Add 1 to both sides)
2a=8
(Divide both sides by 2)
a=4
OR,
2a−1=−7 (Possibility 2)
2a−1+1= −7+1 (Add 1 to both sides)
2a= −6
(Divide both sides by 2)
a= −3
Therefor the answers are a=4 or a= −3
* Hopefully this helps:) Mark me the brainliest:)!!
Answer:
y=sqrt(1/2x-25/2), -sqrt(1/2x-25/2).
Step-by-step explanation:
y=2x^2+25
x=2y^2+25
2y^2=x-25
y^2=1/2x-25/2
y=sqrt(1/2x-25/2), -sqrt(1/2x-25/2)
Answer:
x = 3√7
Step-by-step explanation:
From the right triangle given in the picture,
Altitude or height of the triangle (AD) = x
Base or hypotenuse of the given triangle (BC) = 16
Length of segment BD = 16 - 7 = 9
By using geometric mean theorem in the given triangle,
![\frac{AD}{BD}=\frac{DC}{AD}](https://tex.z-dn.net/?f=%5Cfrac%7BAD%7D%7BBD%7D%3D%5Cfrac%7BDC%7D%7BAD%7D)
(AD)² = (BD)(CD)
x² = 9×7
x = √63
x = 3√7