A bag contains 6 red marbles, 2 white marbles, and 1 gray marble.You randomly pick out a marble,record its color,and put it back in the bag. You repeat this process 45 times. How many white or gray marbles do you expect to get ?
Answers
You should expect 5. There is one grey marble out of 9 total, and that can be expressed as 1/9. Since you repeat it 45 times, it's 1/9 45 times, or 1/9(45).
1*45 is 45
9*1 is 9.
45/9 is 5.
Be sure to choose which answer is Brainliest!
What is the answer for 4=0.5z-4
Answers
8 = 0.5 z 8/ 0.5 = z z = 16
Answer is 16
4=0.5z-4 4+4=0.5z 8=0.5z z=16
I isolated Z
Cookies are on sale! Today each cookie costs $0.75 less than the normal price. Right now if you buy 7 of them it will only cost you $2.80! Write an equation to determine the normal price of each cookie (c).
Find the normal price of each cookie.
Answers
Well first to find out how much the cookies are on sale you do
So on sale each cookie is 40 cents each, now to figure out the normal price add 75 cent to the sale price so:
So that gives us $1.15 So the normal price for the cookies is $1.15 and the sale price is $0.40 cents
Round 2.408 to the nearest hundredth
Answers
8 in 2.408 is closer to 10, so you round 2.408 to 2.41
2.408 is rounded to 2.41
How much is 290 dimes
Answers
$29.00 and you can also multiply too is is a cool way
since dimes are worth .10 cents, divide 290 by 10 to get 29,which is 29$
Solve, using the substitution method 2x+4y=16 x-7=-4y