Answer:
B
Step-by-step explanation:
You can divide the larger number by the smaller number for all of them and see if they all match. If they dont then its not porportional.
If we were to simplify this it would equal the same equation because this cannot be solved. Due to there being no like terms. We also need to know what x equals which there is no number given here to solve. Have a great day!
Answer:
7/15
Step-by-step explanation:
<em>No. of green marbles in the bag= 7</em>
<em>No. of blue marbles in the bag= 8</em>
<em>Total no. of marbles in the bag= 7+8=15</em>
As we know that,
Probability( of a random event A)= 
Hence in this case,
Favourable np. of elementary events (green marbles)=7
Total no. of elementary events (Total no. of marbles in the bag)= 15
Hence, Probability of picking a green marble from the bag=
Answer:
15% of 60 is 9
Step-by-step explanation:
15%= 3/20
3/20*60= 180/20
180/20= 9
15% of 60 is 9
Hope this helps!
A parabola is a quadratic function, and a quadratic can be expressed in vertex form, which is:
y=a(x-h)^2+k, where (h,k) is the vertex (absolute maximum or minimum point of the quadratic)
In this case we are given that (h,k) is (-5,80) so we have so far:
y=a(x--5)^2+80
y=a(x+5)^2+80, we are also told that it passes through the point (0,-45) so:
-45=a(0+5)^2+80
-45=25a+80 subtract 80 from both sides
-125=25a divide both sides by 25
-5=a, so now we know the complete vertex form is:
y=-5(x+5)^2+80
The x-intercepts occur when y=0 so:
0=-5(x+5)^2+80 add 5(x+5)^2 to both sides
5(x+5)^2=80 divide both sides by 5
(x+5)^2=16 take the square root of both sides
x+5=±√16 which is
x+5=±4 subtract 5 from both sides
x=-5±4 so the x-intercepts are:
x=-1 and -9