Answer:
x = 8 , y = 3
Step-by-step explanation:
3x + 2y = 30
3x - y = 21 -> y = 3x - 21
3x + 2 (3x - 21) = 30
3x + 6x - 42 = 30
3x + 6x = 30 + 42
9x = 72
x = 72/9 = 8
y = 3*8 - 21 = 24 - 21 = 3
∴ x = 8 & y = 3
Answer:
(-2,17) i think i am not sure
Step-by-step explanation:
Answer:
600
Step-by-step explanation: 
<u><em>Cross out the common factor</em></u>
<u><em /></u>
<u><em>Calculate the product or quotient</em></u>
<u><em /></u>
<em>I hope this helps you</em>
<em>:)</em>
Answer:
Step-by-step explanation:
Volume = 1/3 * B * h
B = 8 * 8 = 64
h = 15.5
Volume = 1/3 * 64 * 15.5
Volume = 2976 cu in
Answer:
B. x=1+2i or x=1-2i.
Step-by-step explanation:
The equation is given as;
x²-2x+5=0
complete the square method to find value of x as;
x²-2x = -5
x²-2x + 1 = -5 + 1
x²-2x +1 =-4
( x-1 )² = -4
x-1 = ±√-4 ---------<em>where √-1 = i</em>
x-1 =± 2i
So;
x-1 = + 2i
x= 1+2i
or
x= 1-2i
x= 1-2i
