5 + 5 + 5 + 5 equals 550 lgjf8654
Answer:
-2497
Step-by-step explanation:
Sn=n/2[2a+(n-1)d]
=22/2[2*-40+(22-1)d]
=11(2*-40+(21*-7)
= -2497
It's directly proportional, so
m=kw
Find the value of k
900=k(18)
k= 50
Answer: m=50w
13 is C, √10
Rational numbers are numbers that can be expressed as a ratio, or a fraction.
14 is C, 9.5 × 10^5
Answer: V = 8x^3-80x^3 +200x
Domain 0<x<5
Step-by-step explanation:
Dimension of cardboard = 10 by 10
Let the length of box = 10-2x
Let the width of box = 10 - 2x
Let the height of box be =x
Volume = l×w×h
V = (10-2x)×(10-2x)×x
V= 100 - 40x +42 × x
V= 8x^3 -80x^2 +200x
