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3 years ago

Re-write the quadratic function below in Standard Form y = -9(x + 1)(x – 7)

Mathematics

2 answers:

koban [17]3 years ago

6 0

Answer:

y=-9x²+54x+63

Step-by-step explanation:

y=-9(x²-7x+x-7)

y= -9(x²-6x-7)

y=-9x²+54x+63

scZoUnD [109]3 years ago

3 0

Y=-9(x^2-7x+x-7)
y=-9(x^2-6x-7)
y=-9x^2+6x+63

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A person creates a game in which a person pays $5.00 to play. Then, they draw a single card from a standard shuffled deck of car

valkas [14]

Answer:

Step-by-step explanation:

The expected value is the probability of an event multiplied by the number of times the event happens. And if there is more than 1 event, the expected value is the sum of those.

There are 52 cards in a deck.

There are 12 face cards in a deck. (gain 10)

There are 4 ace in a deck. (gain 20)

Any other card is 36 of them. (lose 5)

The probability of face card is 12/52

The probability of ace is 4/52

The probability of any other card is 36/52

Thus the expected values is:

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3 years ago

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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

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2 years ago

Solve for x.<br> (1/3) over 3 =x over 8

Ugo [173]

8/3=3x (cross multiplied to get this)

X=8/9 (divided both sides by 3)

Hope this helps :)

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2 years ago

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PLEASE HELP ASAP GEOMETRY 20 POINTS REAL ANSWERS ONLY!

DedPeter [7]

Answer:

16.2

Step-by-step explanation:

Use the law of cos

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3 years ago

Carla has already written 10 pages of a novel. She plans to write 15 additional pages per month until she is finished. Write an

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Answer:

equation: p=15m+10

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2 years ago

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