Answer:
between 0&1 and 2&3
Step-by-step explanation:
(Assuming that f(x) = 2x^2 - 5x + 1)
To solve this question we just need to find the zeros of the function f(x), and we do that by making f(x) = 0 and finding the values of x:
2x^2 - 5x + 1 = 0
Now we can use Bhaskara's formula:
Delta = b^2 - 4ac = 25 - 4*2 = 17
sqrt(Delta) = 4.12
x1 = (5 + 4.12) / 4 = 2.28
x2 = (5 - 4.12) / 4 = 0.22
the zero x1 = 2.28 is between 2 and 3, and the zero x2 = 0.22 is between 0 and 1, so the answer is 'between 0&1 and 2&3'
As the options A, B, C and D are not clear in the question text, you can just mark the option that has this result.
Answer: y=
s=-30+10t
Step-by-step explanation:
9x + 2y = 5; y
9x-9x+2y = 5-9x
2y=5-9x
y=
1/15s - 2/3t = -2; s
(1/15s - 2/3t = -2)*15 ==> Get rid of fraction by multiplying both sides by 15
s - 30/3 t=-30
s-10t=-30
s=-30+10t
Answer:94°
Step-by-step explanation:
The sum of the interior angles of the polygon: 180°(n-2)
180°(5-2)=540°
The sum of the interior angles of the pentagon is 540°
So:
P+Q+R+S+T=540°
(4x+2)°+132°+(4x-10)°+(5x-11)°+128°=540°
4x+2+4x-10+5x-11+260=540
13x=299
x=23°
P=4x+2°=4×23°+2°=94°
Answer:
He collected 180 other stamps
Step-by-step explanation:
Sorry if it's wrong
