-5 = 7 + 3r (subtract 7 from both sides) -12 = 3r (divide both sides by 3) -4 = r
2A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she takes a red marble is 1 in 5. Yasmine returns the marble to the bag and adds five more red marbles to the bag. The probability that she takes one red marble at random is now 1 in 3. How many red marbles were originally in the bag? 10 red 3 red 5 red 2 red
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Originally, there were x = 5 red 4x = 20 blue
Now, there are x+5 = 10 red 4x = 20 blue
5/8 divide by 1/4 simplest form
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(5/8):(1/4)= 5/8 • 4= 20/8=5/2 = 2 and 1/2
5/8/1/4 =5/8*4/1 =5/2 20 charrr
Draw 2 lines in a triangle. Make 2 triangles and 2 trapezoids.
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here just draw a line from from the top of the triangle to the base middle point and another from right side to left. then you will see two triangles on upperside and 2 trapizoids on lowerside.
A woman put $580 into a saving account for one year . the rate of interest on the account was 6 half %. how much was the interest for the year in dollars and cents?
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I don't know about American currency but, I think it is $617 and 70 cents like $617.70.