X^2 -3x -28
= x^2 -7x +4x -28
= x(x -7) +4(x -7)
= (x +4)(x -7)
2/3x-(-1)Answer:
Step-by-step explanation:
First find the hypotenuse.
a^2 + b^2 = c^2
5^2 + 7^2 = c^2
c^2 = 25 + 49
c = sqrt(74)
sin(theta) = opp/hyp
sin(theta) = 7/(sqrt(74))
Answer:
27 cubic millimeters
Step-by-step explanation:
Remember that a cube's surface area is 
where 
is any side length of the cube.
Hence, by solving 
, we find that the side length of a cube is 3 millimeters.
This means that the volume of the cube is 
15 is divisible by 5 because the last digit of 15 is 5.
A number is divisible by 5 if the last digit of the number ends in 0 or 5
