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Elis [28]
3 years ago
11

What number should be added to both sides of the equation to complete the square x^2+8×=4​

Mathematics
2 answers:
svp [43]3 years ago
7 0

Answer:

16

Step-by-step explanation:

Lana71 [14]3 years ago
7 0

Answer:

16

Step-by-step explanation:

For a quadratic equation in the from

x² + Bx = C,

to complete the square, we need to add (B/2)² to both sides

in this case

x² + 8x = 4

we will need to add (8/2)² = 4² = 16 to both sides

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Seventy percent of kids who visit a doctor have a fever and 21% of kids have fever and sore throats . what is the probability th
Neko [114]

The probability that a kid who goes to the doctor has a sore throat given that he has a fever is <u>0.30 or 30%</u>. Computed using conditional probability.

The probability of any event A given that event B has already taken place is found using the formula P(A|B) = P(A ∩ B)/P(B). This is known as conditional probability, where P(A ∩ B) is the probability of events A and B, and P(B) is the probability of event B.

In the question, we are given that 70% of kids who visit a doctor have a fever and 21% of kids have a fever and sore throats.

We are asked to find the probability that a kid who goes to the doctor has a sore throat given that he has a fever.

We suppose the event of going to the doctor while having a fever to be B, and going to a doctor while having a sore throat to be A.

We are given that 70% of kids who visit a doctor have a fever, that is, the probability of event B, P(B) = 70% = 0.7.

We are given that 21% of kids who visit a doctor have a fever and sore throats, that is, the probability of event A and event B, P(A ∩ B) = 21% = 0.21.

We are asked to find the probability that a kid who goes to the doctor has a sore throat given that he has a fever, that is, we are asked to find the conditional probability of event A, when event B has already taken place, that is, P(A|B).

By formula, we know that:

P(A|B) = P(A ∩ B)/P(B) = 0.21/0.70 = 0.30.

Thus, the probability that a kid who goes to the doctor has a sore throat given that he has a fever is <u>0.30 or 30%</u>.

Learn more about conditional probability at

brainly.com/question/10739997

#SPJ4

3 0
1 year ago
Use the key features of the polynomial f(x) = 6x4 + 4x3 − 5x2 − 2x + 1 to describe its end behavior.
Maksim231197 [3]

Answer:

It is answer D

Because the left side continues to negative infinity and the right side continues to positive infinity.

6 0
3 years ago
dawn bought a winter coat at 30% off the original price.the discount on the coat was 21$.what was the original price of the coat
matrenka [14]
The answer would be $30
7 0
3 years ago
Write a formula for function h in terms of function f.<br> h(x)=
kati45 [8]

Answer:

  • h(x) = f(x + 12) - 4

Step-by-step explanation:

According to the graph, the function h(x) is the translation of the function f(x) to the right and down.

Compare the coordinates of the vertices to write the formula

  • (- 6, 11) → (6, 7)
  • x = 6 - (-6) = 12
  • y = 7 - 11 = - 4

The formula is

  • h(x) = f(x + 12) - 4
7 0
2 years ago
Three dimensional figures
aksik [14]

Answer:

3d figures - "a three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth." -Google

Some Examples are...

- cones

-cylinders

-cubes

-sphere

Hope this helps!

4 0
3 years ago
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