Answer:
1/52
Step-by-step explanation:
There is only one 8 of diamonds in a deck of 52 cards. The deck is properly shuffled, so every card has an equal probability of being selected. So the probability is 1/52.
Answer:
y=-1/2 x^2+3/2 x+9
Step-by-step explanation:
The equation of parabola is:
y=ax^2+bx+c
We know that parabola has three poibts
(6,0),(-3,0) and (1,10).
So we put these three points in equation:
a*36+b*6+c=0......(1)
a*9-3b+c=0........(2)
a+b+c=10........(3)
(1)-(2) we have:
27a+9b=0.....(4)
(2)-(3) we have:
8a-4b=-10.....(5)
4(4)+9(5) we got:
180a=-90
a=-1/2
From (4) we got: b=27/18=3/2
From (3) we got: c=10+1/2-3/2=9
So equation is:
y=-1/2 x^2+3/2 x+9
You can see the picture of parabola through three points.
Answer:
ok
Step-by-step explanation:
8+15=23
will not work it is to long
Answer:
21b^7-30b^2 is the answer
Step-by-step explanation:
21b^7-30b^2 use the distributive
Answer:
f(7) = 5
Step-by-step explanation:
f(7) means find the value of y when x = 7
Locate x = 7 on the x- axis, go vertically up to meet the curve then read the corresponding value of y from the y- axis on the left, thus
f(7) = 5