Answer:
x1=5/2+i
x2=5/2-i
Step-by-step explanation:
x^2-5x+7=0
a=1, b=-5, c=7
x1=(-b+sqrt(b^2-4ac))/2a
x1=(-(-5)+sqrt(5^2 - 4*1*7))/2
x1=(5+sqrt(25-28))/2
x1=(5+sqrt(-4))/2
x1=(5+sqrt(4i^2))/2
x1=(5+2i)/2
x1=5/2+i
x2=(-b-sqrt(b^2-4ac))/2a
x2=(5-2i)/2
x2=5/2-iw
Answer:
(3/2, 7/2)
Step-by-step explanation:
Given the system of equations;
y = 3x/2 + 5/4..... 1
-2x + 8y = 25 .... 2
Substitute equation 1 into 2;
From 2;
-2x + 8y = 25
-2x + 8(3x/2 + 5/4) = 25
-2x + 12x + 10 = 25
10x = 25 - 10
10x = 15
x = 15/10
x = 3/2
Substitute x = 3/2 into equation 1
From 1;
y = 3x/2 + 5/4
y = 3/2(3/2) + 5/4
y = 9/4 + 5/4
y = 14/4
y = 7/2
Hence the solution to the equation is (x, y) = (3/2, 7/2)
Answer:
Simple,the answer would be 93200
Step-by-step explanation:
You move your decimal point backwards by the power e.g 10^6 u move backwards 6 times
You would use the formula A=LW so fill in the blanks A=60 L=5 W=X. 60=5X divide 60 by 5. X=12=W. The width is 12 inches.
F(x)=5
f(1)=5 it was just the (x) that should be substituted