The probability that Joe passes his exams is 0.7 and the probability that he wins the raffle is 0.12. What is the probability that Joe fails his exams and wins the raffle?

The critical value that should be used in constructing the confidence interval is ( 1.592, 1.807 ).

Given that;

Number of residents, n = 7

Z*- value of 90% confidence level equals z* = 0.79

Mean x = 1.7 and deviation σ = 0.36

What is the standard deviation?

Standard deviation is calculated as the square root of variance by determining each data point's deviation relative to the mean.

Now,

Number of residents, n = 7

Z*- value of 90% confidence level equals z* = 0.79

Mean x = 1.7 and deviation σ = 0.36

The confidence interval for mean waste recycled per person is

[tex](x-z^{*} \frac{sigma}{\sqrt{n} } ; x+z^{*} \frac{sigma}{\sqrt{n} } )[/tex]

[tex](1.7 - 0.79*\frac{0.36}{\sqrt{7} } ; 1.7 + 0.79*\frac{0.36}{\sqrt{7} })[/tex]

[tex](1.592, 1.807)[/tex]

Hence, the critical value that should be used in constructing the confidence interval is ( 1.592, 1.807 ).

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The distance between points A and B  is 8 units.

We have been given two points A and B.

The coordinates of the points are A = (3,-7) B = (3,1)

We need to find the distance between points A and B.

Let d be the distance between points A and B.

Using distance formula,

d = √[(3 - 3)² + (1 - (-7))²]

d = √[0² + 8²]

d = √8²

d = 8 units

Therefore, the distance between points A and B  is 8 units.

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Caroline's age is 21 years which is an odd integer.

Integers are a subset of real numbers.

It is given that Caroline is the youngest of 4 siblings and all of their ages are odd consecutive integers.

Let us consider the age of Caroline's age to be x years(x is an odd integer).

She is the youngest so the sibling's age who is just older than Caroline is given by x+2 which is also another odd integer.

Ages of the other two siblings will be x + 4 , x + 6 .

Now sum of their ages is 96.

Therefore: x + (x+2) + (x+4) + (x+6) =96

or, 4x + 12 = 96

or, 4x = 84

or, x = 21 (odd integer)

Carline's age is 21 years.

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Answer:

25.  0 < x < 22.9

26.  0 < x ≤ 3.3

Step-by-step explanation:

The perimeter of a two-dimensional shape is the distance all the way around the outside.

Question 25

[tex]\begin{aligned}\sf Perimeter & < 51.3\\\implies 14.2+14.2+x & < 51.3\\28.4+x & < 51.3\\28.4+x -28.4& < 51.3-28.4\\x & < 22.9\end{aligned}[/tex]

[tex]\textsf{As length is positive: $0 < x < 22.9$}[/tex]

Question 26

[tex]\begin{aligned}\sf Perimeter & \leq 18.7\\\implies 6.4+4.9+4.1+x& \leq 18.7\\15.4+x& \leq 18.7\\15.4+x-15.4& \leq 18.7-15.4\\x& \leq 3.3\\\end{aligned}[/tex]

[tex]\textsf{As length is positive: $0 < x\leq 3.3$}[/tex]

Answer:

B

Step-by-step explanation:

_/25 can be rooted to 5. 5 is rational.

Answer:

39.0015

Step-by-step explanation:

36.45 x 0.07 = 2.5515

36.45 + 2.5515 = 39.0015

Answer: It should be 3 and 5

Step-by-step explanation: I hope this helps <33

None of the above, since the improper fraction 4/3 is identical to the mixed number 1 1/3.

There are various types of fractions, including proper and improper fractions as well as mixed numbers. Mixed numbers: Sometimes converting a mixed number into an incorrect fraction is advantageous or required. If you answer equations that contain both mixed numbers and fractions, you must take this step.

Divide the full integer by the denominator of the fraction (3). (1). 3 x 1 = 3. The product you obtained in the previous step (3) after adding the fraction's numerator (1) is equal to four. 1 + 3 = 4.This turns becomes the improper fraction's numerator. As with the proportion in the mixed number, the denominator remains constant.

Hence, the set of numbers 1 1/3 fraction is 4/3.

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Answer:

Step-by-step explanation: 40 see attachment

Answer:

782.5

Step-by-step explanation:

First off, we have to somewhat follow the order of PEMDAS.

1) Simplify the exponents

[tex]\frac{(7.3 * 1000000) + (2.4 * 10000000)}{(4 * 10000)}[/tex]

2) Multiply what's in the parenthesis

[tex]\frac{7,300,000 + 24,000,000}{40,000}[/tex]

3) Now we have to add what's on the top bracket

[tex]\frac{31,300,000}{40,000}[/tex]

4) After all the simplifying is done, we have to divide

31,300,000 ÷ 40,000 =  782.5

I hope this helped you :)

Step-by-step explanation:

you can ask questions for clarification

The answer for "x" in 6^(x+2) = 10 is -0.715

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Answer:

(x – 4)² + y² = 36

(x + 6)² + y² = 144

Step-by-step explanation:

All other questions are parabolas!

Answer:

Step-by-step explanation:

For every "h" plug in "5", then follow the order of operations

2h+h-2(3)

2(5)+5-2(3)

10+5-6

15-6

=9

The answer is 9

The equation of the linear function represented by the table below in slope-intercept form is y = 5x + 4

The equation of a line in point-slope form is expressed as y = mx + b

where

m is the slope

b is the intercept

Using the coordinate points (-1,-1) and (2, 14)

Slope = 14+1/2+1

slope = 15/3

Slope = 5

For the intercept;

14 = 5(2) + b

14 = 10 + b

b = 4

The y-intercept is at the point (0,4)

Determine the equation

y = mx + b

y = 5x + 4

Hence the equation of the linear function represented by the table below in slope-intercept form is y = 5x + 4

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Answer:

n <(_) -2

Step-by-step explanation:

We can start by doing this linearly.

First subtract 4 on both sides

-3n >(_) 6

Then divide both sides by -3. You have to switch the sign because you are dividing by a negative number.

n <(_) 6

The given equation has one solution which is x = 6 (which is a REAL number).

Linear Equation Solutions are the values of a variables in linear equations that give all possible solutions. Linear equations represent real-world problems by involving unknown quantities with in form with one or more variables.

Some key concepts regarding the solution of linear equation are-

Now, for the given question;

The linear equation is -

4x + 9 = 33

Solving this;

4x = 33 - 9

4x = 24

x = 24/4

x = 6

Therefore, the solution of the given linear equation is (x=6), where 6 is the real number.

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The complete question is-

The given equation is either linear or equivalent to a linear equation. Solve the equation. (If there is no solution, enter NO SOLUTION. If all real numbers are solutions, enter REALS.)

4x + 9 = 33

4 • 23 = 92 so the correct answer is a  4(20+3).

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between.

For example, x + y is an expression, where x and y are terms having an addition operator in between.

Expressions can be simplified to form an answer. For example, 3+6-2 is an expression that can be simplified to 7. There are two different ways to simplify arithmetic expressions and algebraic expressions. We use the bracket open division multiplication addition subtraction rule which means the operations are performed in the given manner to simplify them.

For example, 2x+5x results in 7x, whereas 7ab-b is an expression that has two unlike terms, which cannot be added.

Checking for all the options:

option a) 4 (20+3)=4 * 23 = 92

option b) 4 (2 + 13) = 4 * 15 =60

option c) 4 (20 + 30) = 4 * 50 =200

option d) 4 (2 + 3) = 4 * 5 = 20

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Answer:
v = 2.33 10⁷ mi / h

Explanation:

For this exercise we must observe that the velocity module is constant, so we can use the kinematic relation       v = d / tThe distance traveled in each orbit is the length of the circle      L = 2π rThe time it takes in orbit is called period (T)Let's reduce the quantities      r = 8.9 10⁷ mi      t = 24 h (3600s / 1 h) = 86400 sWe replace      v = 2π r / TLet's calculate     v = 2π 8.9 10⁷/86400     v = 6.47 10³ mi / s     v = 6.47 10³ mi / s (3600 s / 1h)     v = 2.33 10⁷ mi / h

The line x + y ≤ –3 will be solid and shaded below the graph and the line y < x/2 will be dashed and shaded below the graph.

Inequalities is a relation which makes a non-equal comparison between two numbers or other mathematical expressions.

When graphing the inequalities x + y ≤ –3, the line will intersects the y-axis at the coordinate point (0, -3) and the line will be solid and shaded below the graph.

When graphing the inequalities y < x/2, the line will intersects the y-axis at the coordinate point (0, 0) and the line will be dashed and shaded below the graph.

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[tex]2\frac{1}{2} ~~ : ~~ \cfrac{5}{8}\implies \cfrac{5}{2} ~~ : ~~ \cfrac{5}{8}\implies \cfrac{ ~~ \frac{5}{2} ~~ }{\frac{5}{8}}\implies \cfrac{5}{2}\cdot \cfrac{8}{5}\implies 4 ~~ \checkmark \\\\[-0.35em] ~\dotfill\\\\ \cfrac{1}{8}~~ : ~~1\implies \cfrac{ ~~ \frac{1}{8}~~ }{1}\implies \cfrac{1}{8} ~~ \bigotimes \\\\[-0.35em] ~\dotfill[/tex]

[tex]4~~ : ~~1\frac{1}{4}\implies 4~~ : ~~\frac{5}{4}\implies \cfrac{4}{ ~~ \frac{5}{4} ~~ }\implies \cfrac{4}{1}\cdot \cfrac{4}{5}\implies \cfrac{16}{5}~~ \bigotimes \\\\[-0.35em] ~\dotfill\\\\ \cfrac{7}{8}~~ : ~~3\frac{1}{2}\implies \cfrac{7}{8}~~ : ~~\cfrac{7}{2}\implies \cfrac{ ~~ \frac{7}{8}~~ }{\frac{7}{2}}\implies \cfrac{7}{8}\cdot \cfrac{2}{7}\implies \cfrac{1}{4}~~ \bigotimes \\\\[-0.35em] ~\dotfill[/tex]

[tex]4\frac{1}{3}~~ : ~~3\implies \cfrac{13}{3}~~ : ~~3\implies \cfrac{ ~~ \frac{13}{3}~~ }{3}\implies \cfrac{13}{3}\cdot \cfrac{1}{3}\implies \cfrac{13}{9} ~~ \bigotimes \\\\[-0.35em] ~\dotfill\\\\ 2~~ : ~~\cfrac{1}{2}\implies \cfrac{2}{ ~~ \frac{1}{2} ~~ }\implies \cfrac{2}{1}\cdot \cfrac{2}{1}\implies 4 ~~ \checkmark[/tex]

c. It is not linear because it has a constant rate of change.

Answer:

D

Step-by-step explanation:

this is showing a quadratic

In a survey where the ratio of students who prefer muffins to bagels is 4 to 5 and 420 prefer muffins, 525 students prefer bagels.

Ratio is the relationship between two quantities, normally expressed as the quotient of one divided by the other.

It can be expressed in different ways:

1) Use the ":" to separate the values : a : b

2) Use the word "to" : a to b

3) Write it in fraction: a / b

On the other hand, proportion is the equality of two ratios, such that

a : b = c : d

Given a proportion, the product of its means must be equal to the product of its extremes. That is:

ad = bc

If the ratio of students who prefer muffins to bagels is 4 to 5, and 420 students prefer muffins, the proportion can be written as:

4 : 5 = 420 : n

where n = number of students who prefer bagels

Solving for n,

4n = 5(420)

4n = 2100

n = 525

number of students who prefer bagels = 525

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The points awarded for striking the inner circle ought to be tripled.

What is the inner circle?

The formula for the area of a(one) circle is an inner circle for the external circle, use the formula also abate the value of the inner circle, to find the remaining area, which means that the area of the external circle is 3( three) times larger, making it 3( three) times more likely to hit the external circle.

Thus, The points awarded for striking the inner circle ought to be tripled.

[tex]\pi r^2 A =\pi 2^2 = 12.566 A\\[/tex]

so,

[tex]\pi 4^2 - 12.566 = 3(three)[/tex]

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The original price of a zip disk is; $1.4

Let cost of zip sticks bought by Ramon be x. Thus;

Cost that Ramon paid = 5x

Now, we are told that 2 days later the price increased by $1.5 per disc. Thus, new cost = x + 1.5

Leticia bought ten disks at the sale price and paid 22 more than ramon paid for 5 disks. Thus, equation here is;

10(x + 1.5) = 5x + 22

Expand the bracket to get;

10x + 15 = 5x + 22

10x - 5x = 22 - 15

5x = 7

x = 7/5

x = $1.4

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The number of tickets that can be bought with $40 is 4 tickets

It costs $9.50 to buy 1 tickets

The number of tickets that will be bought with $40 can be calculated as follows

= 40/9.50

= 4.2

Hence 4 tickets will be bought with $40

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Answer:

b = 1

Step-by-step explanation:

they are asking what is y when x is -4.  We can look on the graph and see that when x = -4, when is 1.  It is the point (-4,1).

We can also see it algebraically.  We can replace x with -4 and solve for y

y = 1/4 x + 2

y = 1/4((-4) + 2

y = -1 + 2

y = 1

Answer:

Step-by-step explanation:

Hi

Answer:the answer is A:nick is correct

Step-by-step explanation:

Based on the fraction given of [tex]\large \frac{2\cdot3^{-4}}{5^{-2}}[/tex], the correct person is c. Nick is correct because the negative exponent in the numerator moves the whole numerator into the denominator and makes the exponent positive.

When a number is being taken to the negative power, then it can be rewritten as a fraction where the number becomes the denominator and the numerator becomes 1.

The number, 2.3⁻⁴ can be written as:

= 1/2.3⁴

The number 5⁻² can be written as:

= 1 / 5²

When these numbers are divided we get:

= 1/2.3⁴ ÷ 1 / 5²

= 1/2.3⁴ x 5²/1

= 5² / 2.3⁴

= [tex]\large \frac{5^2}{2\cdot3^4}[/tex]

In conclusion, Nick was correct.

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