katy desea alquilar un barca y gastar por menos $54. El barco cuesta $7 por hora y katy tiene un cupom de descuento de $9 dolares. ¿por cuántas horas podria katy alquilar el barc​

Answer:

x ∈ R

Step-by-step explanation:

4x+x+4=8x−3x+4

Combine 4x and x to get 5x.

5x+4=8x−3x+4

Combine 8x and −3x to get 5x.

5x+4=5x+4

Subtract 5x from both sides.

5x+4−5x=4

Combine 5x and −5x to get 0.

4=4

Compare 4 and 4.

True

This is true for any x.

x ∈ R

Answer:276

Step-by-step explanation:cba

Answer:

Riian completed a greater amount of homework.

Step-by-step explanation:

The fraction 7/8 is greater than the fraction 2/3.

Answer:

"C" is the answer to that question

Answer:

C

Explanation:

Because I say so

Answer:

The power of horse is:  P = 72000 W

Step-by-step explanation:

Given

To determine

P = ?

Using the formula

[tex]\:\:\:P=\overrightarrow{F\cdot }\overrightarrow{v}[/tex]

The  ⋅  in the formula represents a scalar product, defined by:

[tex]\overrightarrow{v\cdot }\overrightarrow{w}=|v||w|cos\:\theta[/tex]

The angle Ф is zero because F and v are are parallel.

Thus the cosine is 1.

Therefore,

P = (1800) (40.0)

P = 72000 W

Hence, the power of horse is:  P = 72000 W

Answer:

5(2y +1)

Step-by-step explanation:

simplest form =10y+5

Answer:

2.15 times or 215%

Step-by-step explanation:

V(Luxor) = (646)² · 350/3

V(Tower) = 290 x 125 x 622

V(Luxor) ÷ V(Tower) = 2.15

Answer:

41 minutes 40 seconds

Step-by-step explanation:

10km = 10000m

10000/4 = 2500 seconds

2500/60 = 41.6666...

Hence, 41 minutes 40 seconds.

To solve such type of problems in math's we must know the formula related to motion specifically speed. The time taken for Cameron to complete the race is  2500s

When any object cover a particular distance with particular speed then it takes a particular time and this time is called time of motion. The unit of time can be seconds, minutes or hours.

The time of motion is calculated as follows;

time = distance/speed

As distance is given in kilometer so we need to convert kilometer to meter as our speed is in meter per second, so to cancel out the units we must do the conversion and the substituting the values in the above formula

time = 10000/4

time = 2500s

Thus, the time taken for Cameron to complete the race is  2500s when average speed is  4 m/s

Learn more about time of motion, here:

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Answer:

032.0 yd2 de nada corona por favor

Answer:

B. 100 degrees

Step-by-step explanation:

Answer:

(9/8)²=

81/64.

...........................

Answer:

a) 0.7696 = 76.96% probability that at least 11 of them graduated.

b) 0.0474 = 4.74% probability that exactly 9 of them graduated.

c) Since 9 is less than 2.5 standard deviations from the mean, it would not be unusual.

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they graduated, or they did not. Each student is independent of each other. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

The expected value of the binomial distribution is:

[tex]E(X) = np[/tex]

The standard deviation of the binomial distribution is:

[tex]\sqrt{V(X)} = \sqrt{np(1-p)}[/tex]

Unusual outcome:

An outcome in the binomial distribution is unusual if it is more than 2.5 standard deviations from the mean.

92.4% for the medical students admitted through special programs.

This means that [tex]p = 0.924[/tex]

a. If 12 of the students from the special programs are randomly selected, find the probability that at least 11 of them graduated.

This is [tex]P(X \geq 11)[/tex] when [tex]n = 12[/tex]. So

[tex]P(X \geq 11) = P(X = 11) + P(X = 12)[/tex]

In which

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 11) = C_{12,11}.(0.924)^{11}.(0.076)^{1} = 0.3823[/tex]

[tex]P(X = 12) = C_{12,12}.(0.924)^{12}.(0.076)^{0} = 0.3873[/tex]

[tex]P(X \geq 11) = P(X = 11) + P(X = 12) = 0.3823 + 0.3873 = 0.7696[/tex]

0.7696 = 76.96% probability that at least 11 of them graduated.

b. If 12 of the students from the special programs are randomly selected, find the probability that exactly 9 of them graduated.

This is P(X = 9). So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 9) = C_{12,9}.(0.924)^{9}.(0.076)^{3} = 0.0474[/tex]

0.0474 = 4.74% probability that exactly 9 of them graduated.

c. Would it be unusual to randomly select 12 students from the special programs and get exactly 9 that graduate?

The mean number of students expected to graduate is:

[tex]E(X) = np = 12*0.924 = 11.09[/tex]

The standard deviation is

[tex]\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{12*0.924*0.076} = 0.92[/tex]

11.09 - 2.5*0.92 = 8.79

This means that anything below 8.79 is unusual, so, since 9 is less than 2.5 standard deviations from the mean, it would not be unusual.

Answer:

165

Step-by-step explanation:and if u add them together and line them up correctly you will get the answer

11(9 + 6) will be the greatest common factor and the distributive property to rewrite this sum as 99 + 66.

A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.

An expression is a mathematical proof of the equality of two mathematical expressions.

A statement expressing the equality of two mathematical expressions is known as an equation.

Given that,

⇒ 99 + 66

The highest common factor among both is 15

⇒ 11(9 + 6)

Hence " 11(9 + 6) will be the greatest common factor and the distributive property to rewrite this sum as 99 + 66".

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Answer:

A

Step-by-step explanation:

Answer:

its the first one/top left

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

If you add all the sales you do not meet your goal of $25,000

Answer:

All real numbers.

Step-by-step explanation:

8x-8-4=8x-12

8x-12=8x-12

All real numbers

Answer:

[tex]\displaystyle m=-2[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Point (-2, 4)

Point (-6, 12)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Answer:

A, C, E

Step-by-step explanation:

hope this helps!

Answer:

I think it is A, C, E

Step-by-step explanation:

Answer:

D: 14

Step-by-step explanation:

since the proportion is already 4:6, so you want to divided it by 2, so it will become 2:3, then multiply it by 7, so thats how i got 14 tomatoes for 21 people

Answer:

Prob = 20/52

Step-by-step explanation:

There are 5 even number cards per suit: 2, 4, 6, 8, and 10.

and there are 4 suits in a deck, so the total of the even number card events is 5 * 4 = 20

Given that the deck has 52 cards total, then the probability of drawing an even numbered card is the number of successes (20) divided the number of total cards (52) This gives:

Prob = 20/52

which agrees with answer A) in your list.

Answer:

$47.925 for herself.

Step-by-step explanation:

Answer:

Step-by-step explanation:

42+11.25 =52.35

52.35*.10

5.235$

I hope this is the right answer

Step-by-step explanation:

answer for d is 3 over 8....

that's all I know from the qn and can help u... sorry

Answer:

n = 88/5

Step-by-step explanation:

Clear out the fractions by multiplying both sides by 8:

n = 88/5

Answer:

a. 76 b. 52

Step-by-step explanation:

The perimeter of a rectangle is the sum of its four sides.

Now all rectangles have a width and a length.

To find the perimeter it is 2 width + 2 length or 2W +2L.

So if the Perimeter P = 344 and Width W = 76 and P = 2W + 2L

Then...

2(76) + 2L = 344 multiply 2 and 76

2L + 152 = 344 subtract 152 from both sides

2L = 192 divide both sides by 2

L = 96

The length is 96.

The equation of an area of a rectangle is A or  area = width x length or W x L

So the equation is A = W x L

If the area is 4732 and the length is 91 then

91W = 4732 divide both sides by 91

W = 52

The width is 52.

Hope that helps, good luck with your homework!

Answer:

C. 254

Step-by-step explanation:

There are 3 different types of engineers listed in the chart, Electrical, Chemical, and Mechanical. Under the first column of math, add together the numbers for all three engineers.

85+80+89= 254

Therefore, 254 engineers chose math as their favorite subject.

Answer:

-3.7

Hope that helps!

Step-by-step explanation: