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3 years ago

What is a domain in math?

Mathematics

1 answer:

lilavasa [31]3 years ago

5 0

Answer:

"In mathematics, the domain or set of departure of a function is the set into which all of the input of the function is constrained to fall."

Step-by-step explanation:

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If cos θ > 0 and tan θ > 0, which of the following statements MUST be true? (5 points)

solniwko [45]

Yo sup??

cosx>0 in the 1st and 4th quadrant.

tanx>0 in the 1st and 3rd quadrant.

therefore the common solution is x lies in 1st quadrant.

Hence the correct answer is option A.

Hope this helps

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3 years ago

Dilating a triangle changes the angles and side length of the triangle. A. True B. False

Bogdan [553]

False, it may change the side length (not 100% sure) but I know for sure dilating doesn't change the angle

3 0

3 years ago

Read 2 more answers

The fourth graders are going to the

natta225 [31]

Answer: 15

Step-by-step explanation: there is a total of 126 people just find the first number that's divisible by 9 that's above it and divide

7 0

3 years ago

Twelve percent of U.S. residents are in their forties. Consider a group of nine U.S. residents selected at random. Find the prob

miskamm [114]

Answer:

The probability is 28 % ( approx )

Step-by-step explanation:

Since, there are only two possible outcomes in every trails ( residents are in their forties or not ),

So, this is a binomial distribution,

Binomial distribution formula,

Probability of success in x trials,

$P(x)=^nC_x p^x q^{n-x}$

Where, $^nC_x=\frac{n!}{x!(n-x)!}$

p and q are probability of success and failure respectively and n is the total number of trials.

Let X be the event of resident who are in his or her forties.

Here, p = 12% = 0.12,

⇒ q = 1 - p = 1 - 0.12 = 0.88,

n = 9,

Hence, the probability that two or three of the people in the group are in their forties = P(X=2) + P(X=3)

$^9C_2 (0.12)^2 (0.88)^{9-2}+^9C_3 (0.12)^3 (0.88)^{9-3}$

$=36(0.12)^2 (0.88)^7+84(0.12)^3 (0.88)^6$

$=0.279266611163$

$\approx 0.28$

$=28\%$

7 0

3 years ago

-8(6k+4)=128 show all work

Rama09 [41]

Here you go!! I hope this helps you!!

7 0

3 years ago