25% times 80 = 20. 20 students have green eyes.:) :)
First of all
x^2 +10x - 18
use
x = (-b plus or minus (<span>√<span></span></span>(b^2-4ac)))/2a
you will get
(x+5−(<span>√<span><span><span>43)</span></span><span></span></span></span>)(x+5+(<span>√<span><span><span>43</span></span><span>))</span></span></span>
For number 1, the x-intercept is -1.5 and the y- intercept is 3. For number 2, the x-intercept is 8 and the y-intercept is -4. For number 3, the x-intercept is -10 and the y-intercept is 5. To get these answers, use the formula of y=mx+b. M is the slope and b is the y-intercept so, for number 3, you need to divide everything by -2 to get y alone, then add 1/2 to both sides to use inverse operations. The real equation for number 3 is y=1/2x+5.
Answer:
123
Step-by-step explanation:
All number are less than 5,so it tays as 123
we know the triangle is an isosceles, so it has twin sides, and then the hypotenuse, since it's a right-triangle, we can just use the pythagorean theorem for that.