Answer: x=-2
Step-by-step explanation:
Given
f(x)=2(3x+7)-4(x-2)
f(x)=18
Use substitution method
2(3x+7)-4(x-2)=18
Expand parenthesis
6x+14-4x+8=18
Combine like terms
2x+22=18
Subtract 22 on both sides
2x+22-22=18-22
2x=-4
Divide 2 on both sides
2x/2=-4/2
x=-2
Hope this helps!! :)
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Answer:
C.) 0
Step-by-step explanation:
ax^2+bx+c
discriminant
b^2 -4ac
4^2-4*4*1
16-16
0
So if we have 4x^2 - 27 = 0 then by using the square root properties we get:
4x^2 = 27
x^2= 27/4
x= +/- sqrt(27/4)
x=+/- 3*sqrt(3)/(2)
hope this helps! any questions please just ask! Thank you!!
There are 10 students so that is 2/10 which reduces down to 1/5
Answer:
B. Stratified random sample is the correct answer
