Answer:
Q1-298
Q2-422
Step-by-step explanation:
P=x+38
add all individual sides together (is also the perimeter):
p=(x+3)+(x-5)+x+(x-2)+(x-4)+(x-1)+(x-1)
=7x-10
set both p equal:
x+38=7x-10
38=6x-10
48=6x
8=x
then insert x=8 in all the side/perimeter equations:
p=x+38=8+38=46
sides:
x=8
x-2=8-2=6
x-1=8-1=7
x-4=8-4=4
x-5=8-5=3
x+3=8+3=11
Answer:
negative
Step-by-step explanation:
A line sloping upwards from left to right has a positive slope
A line sloping downwards from left to right has a negative slope
The line here is sloping downwards from left to right.
Thus has a negative slope
The dimensions are 60 yards by 100 yards
Proof:
Let the wdth be x and the length be x+40
x(x+40)=6000
x²+40x=6000
x²+40x-6000=0
use the quadratic formula
x= -40+ or - √40²-4*1*-6000
x= 60, -100
but distance but be positive so the dimensions are 60 yards by 100 yards
Answer:
65.94 cm²
Step-by-step explanation:
12.5/2 = 6.25 = radius of large circle
8.5/2 = 4.25 = radius of small circle
A= πr²
A of large circle = 3.14(6.25²) = 122.66
A of small circle = 3.14 (4.25²) = 56.72
122.66 - 56.72 = 65.94 cm²
