Answer:
x=1
Step-by-step explanation:
x+3x+5x+7x+...+49x=625
(1+3+5+7+...+49)x=625 (1)
now consider s= 1+3+5+7+...+49
a=1
d=3-1=2
l=49
l=a+(n-1)d
49=1+(n-1)2
49-1=(n-1)2
48/2=n-1
n-1=24
n=24+1=25
s=n/2*(a+l)
s=25/2(1+49)
x=25/2×50
s=25×25=625
from (1)
625 x=625
x=625/625=1
Answer:
f(x) = 15x + 1,000
Step-by-step explanation:
y = mx + b
the 15 is the slope or rate and 1000 is the fixed value ( y intercept)
1 load of stone would weigh 1/16 ton
Answer: 10.6 mm
<u>Step-by-step explanation:</u>
Perimeter (P) is the sum of the sides.
The trapezoid has 4 sides: the shorter base = 1.4mm
the longer base = 16.6mm
the left side = x
the right side = x
P = short base + long base + left side + right side
40.8 = 1.4 + 16.6 + x + x
40.8 = 18 + 2x
21.2 = 2x
10.6 = x
