Solve the equation x to the 2nd power=0.81

a-none of them

b-x=0.9 only!

c-x=0.9 or x = - 0.9

d-x = - 0.9 only!

In 2009 Husain bolt set the world record for sprinting 100 m in approximately 93.5 seconds find his average speed in meters per second

A spinner contains four sections: red, blue, green, and yellow. Joaquin spins the spinner twice. The set of outcomes is given as S = {RB, RG, RY, RR, BR, BG, BY, BB, GR, GB, GY, GG, YR, YB, YG, YY}.

Find the angle between each of the following pairs of vectors A⃗ = Axi^+Ayj^ and B⃗ = Bxi^+Byj^ ... Ax1 = - 3.20, Ay1 = 4.40; Bx1 = 2.70, By1 = - 3.10. i know this is dot prodoct but the calculater just keep saying error

You and a friend race each other. You give your friend a 50-foot head start. The distance y (in feet) your friend runs after x seconds is represented by the linear function y=14x+50. The table shows the distances you run.

What does negative 9 equal positive 27

Y=2x^2+16x+30 axis of symmetry

A bag contains white marbles and blue marbles, 54 in total. The number of white marbles is 1 less than 4 times the number of blue marbles. How many white marbles are there?

What is the lowest common multiple of 24 and 40

What is bigger 5 feet or 60 inches

What is the mean absolute deviation of 26 43 48 29 16 30