find the number n of hours you need to study on saturday so that the mean number of hours is 1.75

Answer:

2 pounds

Step-by-step explanation:

i feel like it's a trick question :/

Answer:

15 rooms are needed at the school

Step-by-step explanation:

Solve:

Divide 450 (the number of students) by 30 (the number of students per classroom)

450/30= 15

Check your work:

30*15= 450

Hope this helps!

Answer:

a=9b=12c=15

Step-by-step explanation:

Answer:

true

Step-by-step explanation:

Answer:

Rotation

Reflection

Translation

Rotation

Step-by-step explanation:

A rotation is a turn.

A reflection is a flip

A translation is a slide.

Answer:

The answer is 145

Step-by-step explanation:

X + Y = 300

3.00x + 5.00y = 1210.00

Y= 300 - X

3x + 5(300 - x) = 1210

3x + 1500 - 5x = 1210

Subtract 1500 from each side

3x -5x = -290

Add the x's

-2x = -290

Divide -2 to each side

X = 145

Answer:

3 feet

Step-by-step explanation:

36 ft²/6 = 6 ft² in pantry

area = l x w

6 = X × 2

x = 3 ft

9514 1404 393

Answer:

  a) slope = -765 jobs per year

  b) j = -765y +1582855 . . . . jobs in year y

  c) 38,320 jobs in 2019

Step-by-step explanation:

a) We can define the variables y and j to represent the year number and the number of jobs, respectively. Then we are given 2 points:

  (y, j) = (2012, 43675) and (2017, 39850)

The slope of the relation is ...

  m = Δj/Δy = (39850 -43675)/(2017 -2012) = -3825/5 = -765

__

b) Using the point-slope form of the equation of a line, we can model the relation between years and jobs as ...

  y -k = m(x -h) . . . . . . . line with slope m through point (h, k)

For m = -765 and (h, k) = (2012, 43675), the model gives ...

  j -43675 = -765(y -2012)

  j = -765y +1582855 . . . . . . . rearrange to slope-intercept form

__

c) For y = 2019, the number of jobs is modeled to be ...

  j = -765(2019) +1582855 = -1544535 +1582855

  j = 38,320 . . . . . jobs in 2019

_____

Additional comment

Quite often for problems of this sort, we let the time variable represent "years after <some reference year>". Here, it would be convenient to use 2012 as the reference year. The the equation would be j = -765y +43675, and the "j-intercept" would have the sensible value of 43675 at "year 0" (or 2012).

The equation we show is technically correct, but has no meaning for year values less than 2012. Especially, we know for sure there were not 1.6 million jobs in information in Indiana at the beginning of the Common Era. Indiana didn't exist until 1816.

To find the solution to the system of equations represented by the two lines based on the given tables of ordered pairs, you can follow these steps:

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Answer:

11 degrees

Step-by-step explanation:

All the angles of a triangle add up to 180 degrees. Subtract (3+47-17) from 180 and divide by three. Therefore, you get 11 degrees.

The value of the expression \(2(cos^4 60 + sin^4 30) -(tan^2 60 + cot^2 45) + 3\times sec^2 30 is 33/4.\)

Let's simplify the expression step by step:

Recall the values of trigonometric functions for common angles:

cos(60°) = 1/2

sin(30°) = 1/2

tan(60°) = √(3)

cot(45°) = 1

sec(30°) = 2

Substitute the values into the expression:

\(2(cos^4 60 + sin^4 30) - (tan^2 60 + cot^2 45) + 3sec^2 30\)

= \(2((1/2)^4 + (1/2)^4) - (\sqrt{(3)^2 + 1^2} ) + 3(2^2)\)

= 2(1/16 + 1/16) - (3 + 1) + 3*4

= 2(1/8) - 4 + 12

= 1/4 - 4 + 12

= -15/4 + 12

= -15/4 + 48/4

= 33/4

Therefore, the value of the expression \(2(cos^4 60 + sin^4 30) -(tan^2 60 + cot^2 45) + 3\times sec^2 30 is 33/4.\)

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Answer:

\(2000 {(1 + \frac{.07}{12}) }^{5 \times 12} = 2835.25\)

Answer:

Step-by-step explanation:

Work out the percentage change to 2 decimal places when a price of £70 is increased to £99.

Work out the percentage change to 2 decimal places when a price of £70 is increased to £99.

Work out the percentage change to 2 decimal places when a price of £70 is increased to £99.

Work out the percentage change to 2 decimal places when a price of £70 is increased to £99.

Answer: $400 million

Step-by-step explanation: $500-100= $400 million :)

Answer:

y=3^(x-2) + 1

Step-by-step explanation:

When dealing with graphs I always use a graphing calculator or Desmos to graph and double check my answers especially when doing translations!

Answer:

  (c)  39 mm²

Step-by-step explanation:

You want to know an estimate of the area of the irregular figure.

The areas of irregular figures are often easily computed by decomposing the figure into shapes whose areas have formulas. Here, we can draw a vertical line from the upper left vertex to divide the figure into a triangle on the left and a trapezoid on the right.

The triangle has a base of 3 squares and a height of 6 squares, so an area of ...

  A = 1/2bh = 1/2(3)(6) = 9 . . . . square mm

The trapezoid has vertical parallel bases of 6 and 7 squares, and a width of 5 squares. Its area is ...

  A = 1/2(b1 +b2)h = 1/2(6 +7)(5) = 65/2 = 32 1/2 . . . . square mm

Then the total area of the figure shown is ...

  area = triangle area + trapezoid area

  area = 9 mm² +32.5 mm² = 41.5 mm²

The closest estimate of those offered is 39 square mm.

Answer:

1/2x or x/2

Step-by-step explanation:

You're taking the number you started with and either multiplying it by 1/2 half or dividing it by 2.

Answer:

28,125

Step-by-step explanation:

There are 10 digits between 0 and 9.  5 of them are odd, and 5 of them are even.

If a six-digit number has all odd digits, then there are 5 numbers that can be the first digit, 5 numbers that can be the second digit, 5 numbers that can be the third digit, and so on.

The number of permutations is 5×5×5×5×5×5 = 5⁶ = 15,625.

For all even digit numbers, the first digit can't be 0, so the number of permutations is 4×5×5×5×5×5 = 4×5⁵ = 12,500.

So the total permutations of six-digit numbers of equal parity is 15,625 + 12,500 = 28,125.

You have the following expression:

In order to simplfy the previous equation, you first use distribution property. Next you use the fact that the product of two roots is the root of the product

Then, the simplified expression is 5 - √10

Answer:

88.99

Step-by-step explanation:

his plan includes 800 minutes for 79.99, all we need to do is calculate the cost of the extra 50mins he used and add it to 79.99. this is ((850-800)*0.18) +79.99 and this is equal to 88.99

Applying the sine rule the value of side w is calculated to be 6.2

The size of w is calculated using the sine rule which states that the ratio of a side and the opposite angles are equal

the formula is

Sin A / a = Sin B / b = Sin C / c

applying the formula for the problem

Sine W / w = Sine X / x

plugging in the values

Sine 38 / w = Sine 84 / 10

cross multiplying

w = 10 x Sin 38 / Sine 84

x = 6.185

x =  6.2 to the nearest tenth

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The estimate the number of households in the sample that lost electricity by giving the mean of the relevant distribution is 3.5 and the quantify the uncertainty of your estimate by giving the standard deviation of the distribution is 1.64.

As per the question given,  

Imagine you're in Portland, Oregon, and a rainstorm has just passed through, causing a power outage in 7% of the households in the city. Now suppose you take a random sample of 50 households to see how many of them were affected by the outage. How can you estimate the number of households in the sample that lost electricity, and how certain can you be of your estimate?

By using the binomial distribution with parameters n=50 and p=0.07, we can calculate that the average number of households in a random sample of 50 that lost electricity is 3.5. This means that we can expect around 3 or 4 households in the sample to have been affected by the power outage on average.

But we don't just want to know the average - we also want to know how much variation we can expect in our sample. By calculating the standard deviation of the distribution, we can see that the number of households that lost electricity in a sample of 50 is likely to vary by around 1.64 on average.

Of course, it's important to keep in mind that these calculations assume that our sample is random and representative of the population of Portland households, and that there are no dependencies or correlations between households that could affect the probability of losing electricity during the rainstorm. But armed with this information, we can make a reasonable estimate of the number of households affected by the power outage and have a sense of how uncertain our estimate is likely to be.

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Answer:

The answer is number 2

Answer: 0.0622009569378

Step-by-step explanation:

The computed mean expenses of the XYZ Corporation based on the given information are 9,911.22.

The mean refers to the average value.

The mean is computed as the quotient that results from dividing the total value of the data set by the number of items in the set.

Name                      Total Sales      Total Expenses

Quezon City            14,950.00             4,933.50

Caloocan City         18,290.00             6,035.70

Marikina City          37,200.00           12,276.00

Cebu City                18,900.00            6,237.00

Davao City             45,000.00          14,850.00

Mandaluyong City 23,000.00           7,590.00

Cavite                     22,000.00          7,260.00

Laguna                    21,000.00          6,930.00

Manila                    66,000.00         21,780.00

Iloilo                       34,000.00          11,220.00

Total                                                  99,112.20

Mean Expenses = 9,911.22 (99,112.20 ÷ 10)

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Why are you cheating... I will report this to your teacher

Answer: all i can read is number 2 and the answer is 5ft

Step-by-step explanation:

Answer:

Step-by-step explanation:

To solve question 1, you use the Pythagorean Theorem to solve. Option B uses this correctly.

Question 2 also uses the Pythagorean Theorem to solve. The answer is a decimal, but rounded to the nearest whole number, the answer is 5.

Question 3 uses the Pythagorean Theorem to see which triangles have the correct measurements of a right triangle. The triangle D is the only incorrect one.

Number 4 uses the Pythagorean Theorem to find the distance it would take to walk in a straight line. The answer to this is 51. Then subtract (24 + 45) - 51 to get 18 yards.

Hope it helps!