D={xl x is a whole number}. E= {xl x is a perfect square <100}. E {xl x is an even number between 10 and 20}
Help me fast please!
Using exponentials, the expression can be presented as the following:
= 7^(1/3) * 7^(1/2) / 7^(1/6)= 7^(1/3 + 1/2 - 1/6)= 7^(2/6 + 3/6 - 1/6)= 7^(2/3)
I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
Answer:
Length= 19cm
Width= 9cm
Step-by-step explanation:
let the length of the rectangle be L cm and its width be W cm.
Perimeter of rectangle= 56cm
2L +2W= 56
L +W= 56 ÷2
L +W= 28
L= 28 -W -----(1)
Area of rectangle= length ×width
LW= 171 -----(2)
Susbt. (1) into (2):
W(28 -W)= 171
28W -W²= 171 <em>(</em><em>expand</em><em>)</em>
W² -28W +171= 0 <em>(</em><em>bring</em><em> </em><em>everything</em><em> </em><em>to</em><em> </em><em>one</em><em> </em><em>side</em><em>)</em>
(W -19)(W-9)= 0 <em>(</em><em>factorise</em><em>)</em>
W-19=0 or W-9=0
W= 19 or W= 9
Subst into (1):
L=28 -19 or L= 28 -9
L=9 or L= 19
Since we usually take the longer side of the rectangle to be its length, L= 19 and hence W=9.
Therefore its length is 19cm and its width is 9cm.
Answer:
Check the image below
Step-by-step explanation:
Some Points that May Help: (2,0), (4,0), (1,3), (5,3), (0,8), and (6,8)
