Answer:
10 feet
Step-by-step explanation:
2.5/5=5/Summer's shadow
Summer's shadow=25/2.5
Summer's shadow=10 feet
To solve this problem you must apply the proccedure shown below:
1. You have that the the <span>archway is modeled by the equation y=-2x^2+8x and the angle mentioned in the problem is defined by the equation x−2.23y+10.34=0.
</span>
2. Therefore, you must susbtitute y=-2x^2+8x into x−2.23y+10.34=0, as below:
x−2.23(-2x^2+8x)+10.34=0
3. When you apply the distributive property, you obtain:
x−2.23(-2x^2+8x)+10.34=0
x+4.46x^2-17.84x+10.34=0
4.46x^2-16.84x+10.34=0
4. When you solve the quadratic equation, you obtain:
x=3 units
Therefore, the answer is the option D: D. 3 units.
Answer:
<h2>the second one</h2>
Step-by-step explanation:
so much for bein a college student.
1.) D.
2.) D.
3.) B.
4.) A.
5.) A.
Hope it helps :)
btw i already answered this :)
