A = L * W
A = 80
L = 5W
80 = W(5W)
80 = 5W^2
80/5 = W^2
16 = W^2
sqrt 16 = W
4 = W <=== width is 4 ft
L = 5W
L = 5(4)
L = 20 <=== length is 20 ft
Answer:
x = 6
y = 4
Step-by-step explanation:
Let the two numbers be x and y
<u><em>Condition 1:</em></u>
7x+3y = 54 -----------(1)
<u><em>Condition 2:</em></u>
x = 2+y -----------------(2)
<em>Putting (2) in (1)</em>
=> 7(y+2)+3y = 54
=> 7y+14+3y = 54
=> 10y = 54-14
=> 10y = 40
<em>Dividing both sides by 10</em>
=> y = 4
<em>Now putting y = 4 in eq(2)</em>
=> x = 2+4
=> x = 6
I believe you would multiply 6 and 10 and get the area of 60, thats all i can think of
Answer:
Step-by-step explanation:
<h3>#1</h3>
Line passes through the origin and has same x and y coordinate pairs,
<u>The line is:</u>
<h3>#2</h3>
<u>Points:</u>
<u>The slope is:</u>
- m = (1 - 3)/6 = -2/6 = -1/3
<u>The line is:</u>
<h3>#3</h3>
<u>Points:</u>
<u>The slope:</u>
- m = (1 - 5)/(0 + 1) = - 4
<u>The line is:</u>
It's pretty clear what the pattern is - 2^(k-1) * (-1)^(k-1) would work backwards, but we have to work forwards to get lower in this case, so we could start at -3 (as long as we put the k-1 in absolute value to make sure it's not 1/8), so we could write it as ∑ (k=1, goes to 4) 2^(|k-4|)*(-1)^(k-4)
It doesn't matter for k-4 because 1/-1 and 1/1 are the same thing as -1 and 1 respectively