So first one is not a 75W bulb:
P(not a 75Wbulb)=(4+5)/(4+5+6)=9/15
P(a 75W bulb)=6/(15-1)=6/14
9/15*6/14=9/35
Inverse operations is liek adding the negatie of a number to cancle it out or multiplying a fractin by its inverse to cancel it
so
19=(h/3)-8
add 8 to both sides
cancels the 8
19+8=(h/3)+8-8
27=(h/3)+0
27=h/3
times 3/1 both sides
27*3=(3h)/3
81=h(3/3)
81=h*1
81=h
Answer:
-6 ;
ax² + bx + c ;
-1
Step-by-step explanation:
1)
Give thequadratic equation :
4x² - 6x - 5
The values of a, b, c are the Coefficient of x², x and the constant respectively
Therefore, the value of b is the Coefficient of x = - 6
2.)
Standard form of a quadratic equation is :
ax² + bx + c
a = Coefficient of x² ; b = Coefficient of x ; c is a constant
3.)
2x² - 4x + 7
Axis of symmetry :
-b / 2a
a = 2 ; b = - 4, c = 7
-b / 2a = - 4 / 2(2)
= - 4 / 4
= - 1
Answer t would be 5 8 and 9
Step-by-step explanation: