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3 years ago

What it the x and y intercept of y=2x^2+3x+1

Mathematics

1 answer:

diamong [38]3 years ago

8 0

The x-intercepts are (-1/2, 0) and (-1,0).

The y-intercept is (0,1).

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Which value of a would make the following expression completely factored?

ehidna [41]

Answer:

Step-by-step explanation:

x^2 - a

If a is a perfect square we could factor

x^2 - b^2 = (x-b)(x+b)

So a cannot be 36,49,81 since they are perfect squares

a must be 12

7 0

2 years ago

48<img src="https://tex.z-dn.net/?f=4%5Csqrt%7Bx%7D%2012192%5C%5C" id="TexFormula1" title="4\sqrt{x} 12192\\" alt="4\sqrt{x} 121

pentagon [3]

Answer:

= x 3048

Step-by-step explanation:

6 0

2 years ago

United Blood Services is a blood bank that serves more than 500 hospitals in 18 states. According to their website, a person wit

Anna11 [10]

Answer:

a) 0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b) 0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

Step-by-step explanation:

I am going to solve this question treating these events as Venn probabilities.

I am going to say that:

Event A: Person has type A blood.

Event B: Person has Rh- factor.

43% of people have type O blood

This means that $P(A) = 0.43$

15% of people have Rh- factor

This means that $P(B) = 0.15$

52% of people have type O or Rh- factor.

This means that $P(A \cup B) = 0.52$

a. Find the probability that a person has both type O blood and the Rh- factor.

This is

$P(A \cap B) = P(A) + P(B) - P(A \cup B)$

With what we have

$P(A \cap B) = 0.43 + 0.15 - 0.52 = 0.06$

0.06 = 6% probability that a person has both type O blood and the Rh- factor.

b. Find the probability that a person does NOT have both type O blood and the Rh- factor.

1 - 0.06 = 0.94

0.94 = 94% probability that a person does NOT have both type O blood and the Rh- factor.

6 0

2 years ago

Find the most common ratio 72,12,2, 1/3,1/18

liraira [26]

Answer:

1/6

Step-by-step explanation:

To find the common ratio, you compare a few pairs of consecutive terms, by dividing an element by its predecessor.

12 / 72 = 1/6

2 / 12 = 1 / 6

1/3 / 2 = 1 / 6

The ratio is constant... so that's your common ratio to go from one term to the next.

To go from one term to the next, you have to multiply by 1/6.

7 0

3 years ago

Find four consecutive even integers whose sum is 60

lubasha [3.4K]

Answer is: 2x=12, 14, 16, and 18

4 0

3 years ago