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3 years ago

Find the domain: { (2, 1) , (6, 4) , (7, 7) , (7, 10) }

2 answers:

8 0

The answers is:
D={2,6,7}
You know that it is the domain because it is at the beginning of the parenthesis and is always x.
(x,y) if you were looking for y you would be looking for the second number in the parenthesis and that is know as range.

Usimov [2.4K]3 years ago

5 0

2, 6, and 7 are the domain because they are in the "x" spot

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ABBBAAA what is the a to b ratio?

Ede4ka [16]

there are 4 A and 3 B.

so the ratio is 4 : 3

3 0

3 years ago

Almira earns $34 an hour. How much does she earn in 8 hours?

Tom [10]

Answer:

$272

Step-by-step explanation:

one hour = $34

8 hours = $272

34*8 = 272

8 0

3 years ago

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The probability that a male will be colorblind is .042. Find the probabilities that in a group of 53 men, the following are true

Dvinal [7]

Answer:

See below for answers and explanations

Step-by-step explanation:

Part A

$\displaystyle P(X=x)=\binom{n}{x}p^xq^{n-x}\\\\P(X=5)=\binom{53}{5}(0.042)^5(1-0.042)^{53-5}\\\\P(X=5)=\frac{53!}{(53-5)!*5!}(0.042)^5(0.958)^{48}\\\\P(X=5)\approx0.0478$

Part B

$P(X\leq5)=P(X=1)+P(X=2)+P(X=3)+P(X=4)+P(X=5)\\\\P(X\leq5)=\binom{53}{1}(0.042)^1(1-0.042)^{53-1}+\binom{53}{2}(0.042)^2(1-0.042)^{53-2}+\binom{53}{3}(0.042)^3(1-0.042)^{53-3}+\binom{53}{4}(0.042)^4(1-0.042)^{53-4}+\binom{53}{1}(0.042)^5(1-0.042)^{53-5}\\\\P(X\leq5)\approx0.9767$

Part C

$\displaystyle P(X\geq 1)=1-P(X=0)\\\\P(X\geq1)=1-(1-0.042)^{53}\\\\P(X\geq1)\approx1-0.1029\\\\P(X\geq1)\approx0.8971$

6 0

2 years ago

There are 65 children in the sixth grade. The ratio of boys to girls 3 to 2. A) how many girls are in the grade?

Akimi4 [234]

Given that,

Total number of children = 65

The ratio of boys to girls is 3 :2.

To find,

The number of girls in the grade.

Solution,

Let there are 3x girls and 2x boys.

ATQ,

3x + 2x = 65

5x = 65

x = 13

So, no of girls = 3x

= 3(13)

= 39

Hence, there are 39 girls in the grade.

5 0

2 years ago

Which group of numbers even or odd include more prime numbers? Why?

serg [7]

The First group i.e 1-10 include more prime numbers .(2,3,5,7,1)

Because it has the basic inputs of every number
Like 15 consists of 3×5

7 0

2 years ago

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