What is x+6y=21? also what is 8x-7y=3?

What is the least common multiple of 4 and 14

27 divide 624 show the work

Which of the following regarding the power of a significance test is/are correct? Select all that apply. As the effect size increases, the power decreases. As the standard deviation increases, the power of the test increases.

A $6,000.00 principal earns 8% interest, compounded semiannually twice per year. After 35 years, what is the balance in the account?

An airplane is traveling at a speed of 240 miles/hour with a bearing of 110°. The wind velocity is 56 miles/hour at a bearing of 325°. What are the plane's actual speed and direction angle?

Find an equivalent ratio for the ratio 4 : 5. 400/500 10 : 12 48 to 60 20/30

How to solve - 24-1/8p=3/8p?

Find the eccentricity of 4 / (-2 - 6sin (theta)) a) 2 b) - 2 c) 3 d) - 3

Which of the following is the solution 4|x+3|≥8

Ms. Tucker travels through two intersections with traffic lights as she drives to the market. The traffic lights operate independently. The probability that both lights will be red when she reaches them is 0.22.