Answer:
15
Step-by-step explanation:
let r represent red marbles then white = 2r + 5 and total is 20, thus
r + 2r + 5 = 20 ( subtract 5 from both sides )
3r = 15 ( divide both sides by 3 )
r = 5 ← number of red marbles
Thus number of white = 20 - 5 = 15
Answer:
$150
Step-by-step explanation:
Convert the percentage to decimal
50% = 0.5
Then Multiply the decimal to the number you need to find the percentage of
300 x 0.5 = 150
Hope this helps!
B = 7, a = 5. So a + b is 13.
For #2 just do Pythagorean theorem. That is 5²+h²=10²
25+h²=100
h²=75
h=sqrt(75)
Use a calculator to approximate the height
And I think it is irrational because square roots are not exact rational numbers
Answer: I believe it is D..
