20% of 2100 is 420
So the tax is $420
Then 2100-420= 1680
So he has $1680 left after paying the tax.
<span>−2 ± square root 5
....................</span>
<u>STEPS:</u>
1) set up an equation. use x as a variable
2x + 3x = 25
2) solve the equation for x:
5x = 25
x = 5
3) Now that you know the value of x, substitute it into the expression for how any girls there are, which is "3x" (since the ratio of BOYS to GIRLS is 2:3):
3x
= 3(5)
= 15
So 15 is your answer, and there are <u>15 girls in the class.</u>
T - 7 < 10, T = 28
28 - 7 < 10
21 < 10
FALSE
Answer:
The answer is "undefined, 1, undefined, undefined, and -1".
Step-by-step explanation:
Finding expression:
undefined
undefined
undefined
