4x5-(2 (2) - 2 ) = 14
(18/ 3) + (3 (2) - 7) 8
Answer:
answer is down below
Step-by-step explanation:
2x^2 + 5x + 2 =0
multiply 2x^2 x 2 = 4x^2
find two numbers that multiply together to get 4 and add together to make 5
so 4 and 1.
Put them in back in the equation: 2x^2 + x + 4x + 2
split it up in the middle and factorise
so 2x^2 + x becomes x(2x+1)
and 4x+2 becomes 2(2x+1)
<u>so (x+2)(2x+1) is the answer</u>
Directly means when x goes up by 3 then y goes up by 3
it is represented by
y/x=k where k stay the same
so y=-21
x=3
the equation is -21/3=-7
k=-7
so k =-7
therfor
y/x=-7
then manipulate the equation
multiply boht sides by x
y=-7x
subsitute valuse for x and get values for y
if (x,y)
(1,-7)
(2,-14)
(3,-21)
so posiible equationscould be
-7/1=-7
-14/2=-7
-21/3=-7
and so on
The total cost for the repair is expressed as <span>f(h) = 30h + 60 where h is the number of hours worked. We are given the total cost which will allow us to calculate the number of hours worked. We calculate as follows:
</span> f(h) = 30h + 60
150 = 30h + 60
90 = 30h
h = 3 hours -------->OPTION 2.
