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3 years ago

When completing the square, what value must you add to both sides of the equation to create a perfect square trinomial?

1 answer:

6 0

Notice that half of the coefficient of x is (1/2)(-4), or -2.

Then x^2 - 4x becomes
x^2 - 4x + 4 - 4 = 0, or (x -2)^2 = 4. Then x = -2 plus or minus 2, and the two roots are 0 and -4.

Thus, add 4 to both sides to obtain x^2 - 4x + 4 = 4.

You might be interested in

What is Radical 84/Two radical three

Ainat [17]

Radical 7

radical 84=2 radical 21

radical 21 divided by 2 radical 3 is radical 7

7 0

3 years ago

In analyzing hits by certain bombs in a war, an area was partitioned into 553 regions, each with an area of 0.95 km2. A total

Leto [7]

Answer:

Probability of having two hits in the same region = 0.178

mu: average number of hits per region

x: number of hits

e: mathematical constant approximately equal to 2.71828.

Step-by-step explanation:

We can describe the probability of k events with the Poisson distribution, expressed as:

$P(x=k)=\frac{\mu^ke^{-\mu}}{k!}$

Being μ the expected rate of events.

If 535 bombs hit 553 regions, the expected rate of bombs per region (the events for this question) is:

$\mu=\frac{\#bombs}{\#regions} =\frac{535}{553}= 0.9674$

For a region to being hit by two bombs, it has a probability of:

$P(x=2)=\frac{\mu^2e^{-\mu}}{2!}=\frac{0.9674^2e^{-0.9674}}{2!}=\frac{0.9359*0.38}{2}=0.178$

4 0

3 years ago

I need help with this and I have a lot more to go

enyata [817]

Answer:

under root 2, 1.5, 2π

Step-by-step explanation:

under under root 2 is equals to 1.414

1.5

2×22/7

44/7

6.2

3 0

3 years ago

Christina biked 36 miles in 6 hours. If she biked at a constant speed, how many miles did she ride in one hour?

Llana [10]

Answer:

6 miles in 1 hour

Step-by-step explanation:

5 0

4 years ago

Read 2 more answers

Help need answers quick (unprofessional behavior and wrong answers will get reported)

AleksandrR [38]

Answer:

step 2 is the answer. when you start the question it's already in pemdas order. 48÷6 equals 8 then multiply it by the other 8 then you can add that quotient to the 10 which is 74 then subtract it by 7 and you get 67. step 2 goes the wrong way and ads the 8 with the 10 before multiplying the 8 by the 8 making everything go in wrong turns.

8 0

3 years ago