Answer:
x is equal to 30
<ABC is equal to 100°
<DBC is equal to 80°
Step-by-step explanation:
3x +10 +2x +20 =180
5x = 180 - 10- 20
5x = 150, divide both sides by 5
x is equal to 30
<ABC = 3x + 10 = 3 × 30 + 10 = 100°
<DBC = 180 - <ABC = 180 - 100 = 80°
X^2+10x+21/x+3? If you meant (<span>x^2+10x+21)/(x+3), please note that those parentheses are essential.
If you wish to divide </span><span>x^2+10x+21 by (x+3) using synth. div., use the divisor -3:
_______________
-3 / 1 10 21
-3 -21
-----------------------
1 7 0
Since the remainder is 0, (x+3) is a divisor of </span><span>x^2+10x+21, and the other factor is (1x + 7).</span><span>
</span>
Answer:
solving a quadratic equation by factoring
using the quadratic formula
Step-by-step explanation:
Answer:
17%
Step-by-step explanation: the possibility of rolling any of these numbers is 1/6.. the percentage for that is 16.666% and rounded to the nearest whole number makes the answer 17
