<span>x>9</span><span>
ncjbjsdcfsjbcjbdcjsdnsnmsaxbknasxnsanasmxanms
I used MathPapa to get the answer </span>
Ok so
parabola standard form is
y=ax^2+bx+c
if you have the points
(-2,18)
(0,4)
(4,24)
sub points to find a,b and c
(-2,18)
sub -2 for x and sub 18 for y
18=a(-2)^2+b(-2)+c
18=4a-2b+c
(0,4)
sub 0 for x, nice a, an b cancel
4=a(0)^2+b(0)+c
4=0+0+c
4=c
we can sub that back later
(4,24)
24=a(4)^2+b(4)+c
24=16a+4b+c
we have
18=4a-2b+c
c=4
24=16a+4b+c
sub 4 for c
18=4a-2b+4
24=16a+4b+4
minus 4 from both sides
14=4a-2b
20=16a+4b
simlify all equations
7=2a-b
5=4a+b
add to solve for 6a
12=6a+0b
12=6a
divide both sides by 6
2=a
sub back
7=2a-b
7=2(2)-b
7=4-b
-3=b
equation is
y=2x^2-3x+4
Answer:
We can calculate the p value using the fact that we are conducting a right tailed test:
Since the p value i approximately 0 we can conclude that we have enough evidence to say that with this method, the probability of a baby being a boy is significantly greater than 0.5
Step-by-step explanation:
Information given
n=172+39=211 represent the sample size
X=172 represent the number of boys in the sample
estimated proportion of of boys
is the value to verify
z would represent the statistic
represent the p value
Hypothesis to test
The ides is verify if with this method, the probability of a baby being a boy is greater than 0.5, so then the system of hypothesis are.:
Null hypothesis:
Alternative hypothesis:
The statitic is given by:
(1)
Replacing the info we got:
We can calculate the p value using the fact that we are conducting a right tailed test:
Since the p value i approximately 0 we can conclude that we have enough evidence to say that with this method, the probability of a baby being a boy is significantly greater than 0.5
Answer: x=1/4
Step-by-step explanation:
<u>Simplify both sides of the equation.</u>
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<u>Simplify both sides of the equation</u>
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It is possible because you can have 2 acute angles in the triangle and on right angle making it a acute right triangle.