Answer:
Step-by-step explanation:
Ashley's car used 10 gallons of gas to drive 478 miles. At what rate does her car use gas in miles per gallon? Express your answ
2 answers:
You might be interested in
I hope this helps you
The solutions of the equations are -1.3 and -7.7
Step-by-step explanation:
The quadratic formula of solving the quadratic equation
ax² + bx + c = 0, where a, b and c are constant is:
To solve the quadratic equation by using the quadratic formula
1. Find the values of a , b and c from the equation
2. Substitute the values of a , b and c in the quadratic formula
3. Find the two values of x
∵ x² + 9x + 10 = 0
∴ a = 1 , b = 9 and c = 10
∵
∴
∴
∴ x = -1.3
∵
∴
∴
∴ x = -7.7
The solutions of the equations are -1.3 and -7.7
Learn more:
You can learn more about quadratic equation in brainly.com/question/8196933
#LearnwithBrainly
Use the identity:
tan^2 = sec^2 - 1
I attached a photo showing all the steps including the final answer.
tan^2 = sec^2 - 1
I attached a photo showing all the steps including the final answer.