Are you even in middle school or high school?lol
Answer:
a = 4
Step-by-step explanation:
a^2 + b^2 = c^2
a= ?
b= 3
c= 5 (c is always the hypotenuse)
*plug in given values
a^2 + 3^2 = 5^2
a^2 + 9 = 25
-9 -9
a^2 = 16
*find the square root
sqrt(a) = sqrt(16)
a = 4
Solving for a gives us: 
Step-by-step explanation:
Solving an equation for a variable means that we have to isolate the variable in the equation
Given equation is:

For isolating a, subtracting c from both sides

Subtracting b from both sides

Hence,
Solving for a gives us: 
Keywords: Equation, formula
Learn more about equation at:
#LearnwithBrainly
Y = 3x - 1
The slope is 3, y goes up 3 for every increase in x
The intercept point of the Y axis is -1
Answer:
1.875\pi square units
Step-by-step explanation:
We know that area of a circle is pi r square.
The sector has a proportional area according to the angle it subtends at the centre.
Here we have a circle of radius 3 inches with central angle 75 degrees.
Total angle of a circle = 360
Area of the given sector = Area of yellow shaded= 