Answer:
C
Step-by-step explanation:
Set it into proportions.
$0.40/0.25 miles = x/15 miles
And then solve the proportion.
0.25*x = 0.40*15
0.25x = 6
0.25x/0.25 = 6/0.25
x=24
Therefore, Emily's mother donates $24 if she bikes 15 miles.
Answer:
x=-1/2
Step-by-step explanation:
-5(x-3+7x=35)=-5(x-3+7 <em>x </em>35=x)
(-5)x+(-5)(-3)+(-5) <em>x</em> 7x=35
-5x+5x<em>x </em>3-5 <em>x </em>7x=35
-40x+15=35
The answer is 37 because you range the two numbers they give you by the 90 degree angle
Answer:
2 real solutions
Step-by-step explanation:
y = -x^2 + 3x + 5
First find the the discriminant:
using b² - 4(a)(b)
(3)²- 4(-1)(5)
=9+20
=29
since the discriminant is more than 0, there are 2 real solutions
