Answer:
B. 5x^4+5x^3
Step-by-step explanation:
(f.g)(x) = f(x) * g(x) = 5x^3 * (x+1)
= 5x^3 * x + 5x^3 * 1
= 5x^4 + 5x^3
Answer:
6.7
Step-by-step explanation:
cos(48) = adjacent/hypotenuse
cos(48) = x/10
x = 10cos(48)
x = 6.691306064
Answer:
B. 8 cm.
Step-by-step explanation:
The area of a rectangle is the length*width.
The area of the larger rectangle is 4*12=48.
The area of the smaller rectangle is 3*x=3x.
If the larger rectangle's area is twice that of the smaller rectangle, then we can say 48=2*3x.
Let's solve for x
48=2*3x
48=6x
x=8
17.5 because when you find range, you need to subtract the smallest number to the biggest number which in this case the biggest is 20 and smallest is 2.5.
