All categories

4 years ago

Complete the table of values for y=-x^2+2x+1

Mathematics

2 answers:

NikAS [45]4 years ago

7 0

Answer:

-1=-2

4=-7

Step-by-step explanation:

for x=-1

y=(-1^2)+(2*-1)+1

y=-1-2+1

y=-2

for x=1

y= (-1^2)+(2*1)+1

y= -1+2+1

y=2

for x=4

y=(-4^2)+(2*4)+1

y=-16+8+1

y=-7

ELEN [110]4 years ago

7 0

Facts y=-7 nice job bye

You might be interested in

Find percent of change. $210 to $35

Tom [10]

Answer:

83%

Step-by-step explanation:

you take 210 - 35 over 210 which is 170 over 210 divide and you get rounded about .83 that as a percent is 83%

7 0

4 years ago

Conner and Jana are multiplying (3568)(39610).

shepuryov [24]

Jena work is correct

7 0

3 years ago

Read 2 more answers

Could somebody help me with this question please?

ELEN [110]

The answer would be 20. Because the whole angle would have to be 90 so you already have 30 so that leaves you with 60 which you divide by 3 and gives you 20

4 0

4 years ago

Read 2 more answers

Assume that a policyholder is four times more likely to file exactly two claims as to file exactly three claims. Assume also tha

kykrilka [37]

Answer:

1.3125

Step-by-step explanation:

Given that our random variable $X$ follows a Poisson distribution $P(X=k)=\frac{\lambda^k e^-^p}{k!} \ \ \ \ \ \ \ \ p=\lambda$

Evaluate the formula at $k=2,3:$

$P(X=2)=0.5\lambda^2e^{-\lambda}\\\\P(X=3)=\frac{1}{6}\lambda^2e^{-\lambda}$

#since

$4P(X=2)=P(X=3);\\\\0.5\lambda^2e^{-\lambda}=4\times\frac{1}{6}\lambda^3e^{-\lambda}\\\\0.5\lambda^2=\frac{2}{3}\lambda^3\\\\0.75=\lambda$

The mean and variance of the Poisson distributed random variable is equal to $\lambda$ :

$\mu=\lambda=0.75\\\sigma ^2=\lambda=0.75$

#By property variance:

$\sigma ^2=V(X)=E(X^2)-(E(X))^2=E(X^2)\\\\E(X^2)=\sigma^2+\mu^2=0.75+0.75^2=1.3125$

The expectation is 1.3125

4 0

4 years ago

20 subtracted from 6 times a certain number, the result is 94. what is the number?

tino4ka555 [31]

Let the number be x.
6x-20=94
6x=114
x=19

3 0

3 years ago

Read 2 more answers

Complete the table of values for y=-x^2+2x+1​

Complete the table of values for y=-x^2+2x+1