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3 years ago

8

PLS HELP ME GRADES ARE DUE TODAY! Fill in the chart below based on the graphs. Remember: Slope is vertical change divided by hor

izontal change.

2 answers:

blagie [28]3 years ago

4 0

Answer:

VC , HC , S

A) 6 , 3 , 2

b) 8 , 2 , 4

c) 40 , 20 , 2

maxonik [38]3 years ago

3 0

Answer:

Graph Vertical Horizontal Slope

A 6 3 2

B 2 8 .25

C 40 20 2

Step-by-step explanation:

<u>Graph A</u>

vertical...

9-3=6

horizontal...

4-1=3

slope...

6/3=2

<u>Graph B</u>

vertical...

3.5-1.5=2

horizontal...

10-2=8

slope...

2/8=.25

<u>Graph C</u>

vertical...

75-35=40

horizontal...

30-10=20

slope...

40/20=2

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6 x 4 x 5 = 120 cubic feet of water

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3 years ago

A bookstore is having a sale in which customers can purchase 6 books for a price of b dollars. Which expression represents the p

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That would be 6/b <====

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3 years ago

Please help me please

spayn [35]

Answer:

A. 34°

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

<u>Trigonometry</u>

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] tanθ = opposite over adjacent
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Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify variables</em>

Angle θ = <em>x</em>

Opposite leg AC = 24

Adjacent leg CB = 35

<u>Step 2: Solve for </u><em><u>x</u></em>

Substitute in variables [Tangent]: $\displaystyle tanx^\circ = \frac{24}{35}$
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4 0

3 years ago

A stack of cards consists of seven red and four blue cards. A second stack of cards consists of eleven red cards. A stack is sel

Ann [662]

Answer:

0.1733 = 17.33% probability the first stack was selected.

Step-by-step explanation:

To solve this question, it is needed to understand conditional probability, and the hypergeometric distribution.

Hypergeometric distribution:

The probability of x sucesses is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of sucesses.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Conditional probability:

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

Probability of all red cards for the first stack:

For this, we use the hypergeometric distribution, as the cards all chosen without replacement.

7 + 4 = 11 cards, which means that $N = 11$ .

7 red, which means that $k = 7$

3 are chosen, which means that $n = 3$

We want all red, so we find P(X = 3).

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 3) = h(3,11,3,7) = \frac{C_{7,3}*C_{4,0}}{C_{11,3}} = 0.2121$

Conditional probability:

Event A: All red

Event B: From the first stack.

Probability of all red cards:

0.2121 of 50%(first stack)

1 of 50%(second stack). So

$P(A) = 0.2121*0.5 + 1*0.5 = 0.60605$

Probability of all red cards and from the first stack:

0.21 of 0.5. So

$P(A \cap B) = 0.21*0.5 = 0.105$

What is the probability the first stack was selected?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.105}{0.60605} = 0.1733$

0.1733 = 17.33% probability the first stack was selected.

4 0

3 years ago

What is 1 2/25 as a decimal?

Elena-2011 [213]

Well, first of all, you have to change the mixed fraction to a proper fraction. So you have to multiply 25 by 1 and add the answer to 2, and use it as the numerator, with the denominator remaining the same. So;
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3 0

4 years ago