The area of the original plot is 200 x 300 = 60000
<span>So the problem says </span>
<span>(x + 200)(x + 300) = 120000 </span>
<span>Proof: 300 x 400 = 120000 </span>
<span>x^2 + 500x + 60000 = 120000 </span>
<span>x^2 + 500x - 60000 = 0 </span>
<span>(x + 600)(x - 100) = 0, so </span>
<span>x = - 600 (reject), x = 100 </span>
<span>So x = 100 meters </span>
<span>Proof: 300 x 400 = 120000</span>
Answer:
15
Step-by-step explanation:
(0 - 9)^2 + (- 10 - 2)^2
(-9)^2 + (-12)^2
81 + 144
sq rt of 225
Answer:
k = 2
x = 2y
Step-by-step explanation:
If variables x and y vary directly, this is expressed as;
x ∝ y
x = ky
k is the proportionality constant
Let's assume the value of x and y since we are not given;
x = 20
y = 10
Substitute
20 = k(10)
10k = 20
k = 20/10
k = 2
Hence the constant of proportionality is 2
Substitute i=k = 2 into the equation x = ky
x = 2y
Hence an equation that relates x and y is x = 2y
<em>Note that the values here are assumed value, you can use the same method for any values of x and y</em>
Answer:
1 2/3 = 5/3
6 3/4 = 27/4
-9 7/3 = -34/3
4 2/7 = 30/7
Step-by-step explanation:
Answer:
147
Step-by-step explanation:
236-89=147