(5x+1)² = 7; expand: 25x² + 10x +1 = 7 or 25x² + 10x -6 = 0
Solve this quadratic for x:
x = [-b + √(b² - 4ac)]/2a and x = [-b - √(b² - 4ac)]/2a
Plug the values and you'll find :
x = (- √7 - 1)/5 (answer C)
x = (+√7 -1)/5 (answer E)
Answer:
90 degrees looks t like the measure of that angle
The function which represents the taxi fare in terms of distance d in meter is f(d) = 3.50 × + 40 .
According to the question,
For first 500 meters cost is 40.00 and For each additional 300 meters cost is 3.50 .
Let, the total distance of taxi ride = d meters
Now, representing the equation of taxi fare in terms of distance when distance is less than 500
taxi fare = 3.50 × + 40
∴ f(d) = 3.50 × + 40
To know more about functions refer below link: brainly.com/question/12431044
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Answer:
x = r cos theta and y = r sin theta
Step-by-step explanation:
cos theta = x / r so:-
x = r cos theta
and sin theta = y / r, so
y = r sin theta