Algebra Answers

If x = 3 is the solution of x^2 + kx +15, value of k is

If x^2 -7x = 0, the value of x is

Which of the following is the solution for x in the simultaneous equations x + y = 24 and 2x – y = -6

Evaluate the following |12| - |-12| + |6|

If I would have purchased 11 articles for Rs. 10 and sold all at the rate 10 for Rs. 11. The profit percent would have been;

A. 10
B. 11
C. 21
D. 100

Kindly, tell me what does the question mean and how to solve the question, please.

Thnk you.

Let x=−1

. Evaluate the function for y.

y=7.2x+3

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If the numerator and denominator of a fraction are both increased by 5, the fraction becomes 5/6 . If the numerator and denominator are both decreased by one the new fraction becomes2/3 . Find the original fraction.

cyclist travels from town A to town C through another town B. He travels A to B at a speed of 6 km/h and B to C at a speed of 9 km/h. The time taken for journey is 4 hrs. On his return journey, the travels at a speed of 6 km from C to B and at a speed of 9 km/h. The time taken for return journey is 4 hrs and 20 minutes. Find the distance AC and BC.