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Neko [114]
4 years ago
10

What number would you add to both sides of x2 + 7x = 4 to complete the square?

Mathematics
1 answer:
Nata [24]4 years ago
8 0

Answer:

12.5

Step-by-step explanation:

(7/2) = 3.5

(3.5)^2 = 12.5

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Which expression is equivalent to 7
Nutka1998 [239]

Answer:

ok what teacher gave you this

Step-by-step explanation:

8 0
3 years ago
How many roots, real or complex, does the polynomial 7 + 5x4 – 3x2 have in all?
antiseptic1488 [7]

Answer:

Step-by-step explanation:

it has 4 roots as its degree is 4.

5 0
3 years ago
Read 2 more answers
According to data from the state blood program, 40 percent of all individuals have group A blood. Suppose that of six randomly s
Svet_ta [14]

Answer:

b. Yes, probability is > 0.05

Step-by-step explanation:

We have to find P(X=3) and if the probability is below 0.05 then the it would be unusual and if it isn't below 0.05 we believe that the data from the blood program.

This probability can be found bu binomial distribution  with parameters  n=6

and p=0.4.

P(X=x)=nCx(p^x)(q^n-x)

where q=1-p=1-0.4=0.6.

P(X=3)=6C3(0.4^3)(0.6^3)

P(X=3)=20(0.064)(0.216)

P(X=3)=0.27648

As the probability that the three have a blood group is greater than 0.05, so,  we believe that the data from the blood program.

8 0
4 years ago
6 more than twice a number is 24. Write is as a Verbal expression please
loris [4]

Answer:

Miss, I would like to have a refund for both of my mcchickens that cost 9 dollars each. I would also like to have a refund for both of my drinks that cost 3 dollars each. They are both large. You messed up my whole meal!

Step-by-step explanation:

3 0
4 years ago
Given f(x)=2x^3+kx-9 and x-1is a factor of f(x), then what is the value of k?
fenix001 [56]

When it says the "x - 1 " is the factor of that function means when you find the root of the phrase x - 1 which is x = 1 , put it in the function then you have to get zero for the answer :

thus :

f(1) = 0

Thus :

2 \times  {1}^{3}  + k(1) - 9 = 0

So :

2 + k - 9 = 0

k - 7 = 0

Add both sides 7

k - 7 + 7 = 0 + 7

k = 7

There you go...

Have a great day ❤

3 0
3 years ago
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