The 4th selection is appropriate.
3x · 1 = 3x . . . . . . . . multiplication by 1 does not change the value
Answer:
Let x = the cost of the new stereo
.07x =28
x = 400
Step-by-step explanation:
So you will need to find the height, and we can do so by using the pythagorean theorem, which is 
. Using this formula, we can make the equation 
Firstly, solve the exponents: 
Next, subtract 225 on both sides: 
Lastly, square root both sides, and your answer is h = 20.
Now that we got the height, we can solve for the volume, which is 
. Using this formula, we can form our equation to be 
Firstly, solve the exponent: 
Next, multiply 225 and 20/3, and your answer will be V = 1500π, or the third option.
Answer:
m∠ADB = 155°
Step-by-step explanation:
m∠ADB = (m∠C)/2 + 90° = 130°/2 + 90°
m∠ADB = 155°
_____
Reference brainly.com/question/17443119 for the derivation.
Answer:
solid...(-3,0)(-4,-1)...shaded below the line
slope = (-1-0) / (-4-(-3) = -1/(-4 + 3) = -1/-1 = 1
y = mx + b
-1 = 1(-4) + b
-1 = -4 + b
-1 + 4 = b
3 = b
this line is : y < = x + 3 <== (thats less then or equal)
====================
solid...(1,1)(2,-1)...shaded below the line
slope = (-1-1) / (2-1) = -2/1 = -2
y = mx + b
1 = -2(1) + b
1 = -2 + b
1 + 2 = b
3 = b
Step-by-step explanation:
