Answer:
x = -5
Step-by-step explanation:
You're asking for the solution? the x value that makes the equation true?
First perform the multiplication: 5 - 10x + 8x = 15
Combining like terms, we get -10 = 2x.
Dividing both sides by 2 yields x = -5.
Answer:
24 cm squared
Step-by-step explanation:
7/1 I think because it’s 7 times more
£160 * (1+3%)^22 = £306.58 (correct to 2 decimal places)
Answer:
Equation of the parabola: y = 3 - 7x^2
Step-by-step explanation:
The equation of the parabola with vertex (h,k) is y = a(x - h)^2 + k
Thus, the equation of this parabola is y = ax^2+3
To find a, use the fact that the parabola passes through the point (1,−4):
-4 = a(1)^2 +3
Solving this equation, we get that a = −7.
Thus, the equation of the parabola is y = 3 − 7x^2.
