Twenty-five decreased by one fifth of a number is 18. Find the number.

Answer:

Below.

Step-by-step explanation:

Use the formula

Area  = 1/2 ab sin C    where a and b are the given lengths of 2 sides and < C is the angle between them.

If you are not given the value of < C  you can calculate it from the other 2 known angles.

The percentage increase in the cost of oranges is 20%

A % is a quantity or ratio stated as a fraction of 100 in mathematics (from the Latin per centum, "by a hundred"). The abbreviation "pct.", "pct.", and occasionally "pc" are also used to indicate it, but the percent sign, "%," is more frequently employed. There is no unit of measurement for a %; it is a dimensionless number (pure number).

The symbol for "%" developed from the progressive reduction of the Italian term per cento, which means "for a hundred." It finally vanished totally. The word "per" was frequently shortened to "p." Two circles and a horizontal line made up the "cento," which is how the contemporary "%" symbol is now represented.

Given that the oranges at the grocery store went from $0.75/ib to $ 0.90/ib

=(0.90-0.75)/0.75

=0.15/0.75

=0.2

% increase= 0.2*100

=20%

Therefore, the percentage increase in the cost of oranges is 20%

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Answer:

number 3

Step-by-step explanation:

Answer:

M = 2 b= 10

Step-by-step explanation:

Turn it to mx + b form

By +2x to both sides

Y = 2x + 10

Answer:

A. $0

B. 0

Step-by-step explanation:

A. If you deposit $10 in an empty bank account and you withdraw $10 from the account, the amount of money left in the account will be:

10 - 10 = $0

B. If you start at 0, add 7 and subtract 7, you'll end up at:

0 + 7 - 7 = 0

The expected number of 45-year old people in Apexville expected to not be alive in one year is given as follows:

A. 819.

The expected number of 45 year old people in Apexville expected to be dead in one year is obtained by multiplication of the proportion of people that are expected to die by the number of 45-year-olds, which is of 260,000.

From the table given by the image at the end of the answer, the proportion of 45-year-olds not expected to be alive in one year is of:

315/100,000.

Hence the expected number of deaths in the year is given as follows:

E(X) = 260,000 x 315/100,000 = 2.6 x 315 = 819.

Meaning that option A is correct.

The table with the proportions is given by the image shown at the end of the answer.

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Answer:819

Step-by-step explanation:

Answer:

3.14

Step-by-step explanation:

\(\pi\) or commonly known as Pi is equal to 3.14 so it will fit in between 3 and 4 but closer to 3.

Answer:

80 inches

Step-by-step explanation:

10 x 8 = 80

The statement "Because in a randomized controlled trial (RCT), the assignment is random, therefore there is no coverage bias---by definition" g is false because, it is important to consider both randomization and other factors when assessing the potential for bias in an RCT.

Random assignment in an RCT can help to reduce selection bias, but it does not guarantee the absence of coverage bias.

Coverage bias can occur if the participants who are enrolled in the trial do not represent the population to which the results will be generalized.

For example, if the trial only includes participants who are healthier or more compliant than the typical patient, the results may not be applicable to the broader population.

Therefore, it is important to consider both randomization and other factors when assessing the potential for bias in an RCT.

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The probability that a homebuilder takes 200 days or less to complete a house is approximately 0.8238, or 82.38%.

Explanation :

To answer this question, we can use the concept of the z-score. The z-score tells us how many standard deviations a data point is from the mean.

Let's calculate the z-score for a completion time of 200 days:
z = (x - μ) / σ
where x is the completion time, μ is the mean, and σ is the standard deviation.
Plugging in the values, we get:
z = (200 - 176.7) / 24.8 = 0.93

To find the probability associated with this z-score, we can use a z-table or a calculator. In this case, the probability is 0.8238.

This means that there is an 82.38% chance that the completion time of a house will be 200 days or less, given that the completion time follows a normal distribution with a mean of 176.7 days and a standard deviation of 24.8 days.

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Uses and gratifications theory (UGT) is an approach to understanding why and how people actively seek out specific media to satisfy specific needs.

Use and gratification theory is an approach to understanding why and how people actively seek certain media to satisfy certain needs. The theory states that media consumers are passive consumers of mass communication; Rather, they play an active role in media consumption.

After the introduction of use and gratification theories, scholars have generally viewed audiences as active participants who seek, evaluate, use, and consume media for various reasons, purposes, and in various ways.

Explain how people use the media for their own needs and are satisfied when their needs are met. In other words, the theory proves what people do to the media, not what the media does to people.

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Answer:

B=28

Step-by-step explanation:

Answer:The continuous compounding of interest in a bank leads to the formula A(t) = A0 * e^(rt) for the total amount in the account at time t, where r is the interest rate, A0 is the principal amount, and e is the base of the natural logarithm (approximately 2.71828).

Step-by-step explanation:

1. A0 represents the initial principal amount, which is the starting balance of the account.
2. r is the interest rate, expressed as a decimal (e.g., 0.05 for 5% interest rate).
3. t is the time, typically measured in years.
4. e is the base of the natural logarithm (approximately 2.71828).
5. The exponent rt represents the product of the interest rate (r) and the time (t).
6. A(t) represents the total amount in the account at time t, including both the principal and the interest earned.

By continuously compounding interest, the account balance grows at an exponential rate, and the formula A(t) = A0 * e^(rt) is used to calculate the account balance at any given time t.

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Answer:

slope = \(\frac{5}{4}\)

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = \(\frac{5}{4}\) x - \(\frac{7}{4}\) ← is in slope- intercept form

with slope m = \(\frac{5}{4}\)

Answer:

Length = x^2 = 0.835^2 = 0.698 m = 69.8cm

Breadth = x = 0.835 m = 83.5cm

Step-by-step explanation:

Given;

Length of the rectangular plot l = x^2 m

Breadth b = x m

Area A = 5832 cm^2 = 0.5832 m^2

(They should be converted to the same units before solving: length in metres and area in square metres)

The area of a rectangular plot can be calculated using the formula;

Area = length × breadth

A = l × b

Substituting the values of l and b;

A = x^2 × x

A = x^3

Substituting the value of A;

0.5832 = x^3

solving for x;

x = (0.5832)^(1/3)

x = 0.835 m

Length = x^2 = 0.835^2 = 0.698 m = 69.8cm

Breadth = x = 0.835 m = 83.5cm

The 10th term round to the nearest thousandth of the geometric progression is found as 0.001.

For the stated sequence:

5, 2,4/5,...

Check for AP:

a₂ - a₁ = 5 - 2 = 3

a₃ - a₂ = 4/5 - 2 = -6/10 = -3/10

As the common difference is not same, it is not an AP.

Check for GP:

a₁  = 5

a₂ = a₁ q²⁻¹

a₂ = 5q = 2

a₃ = a₁q³⁻¹

    =  a₁q²

a₃ = 5q² = 4/5

As,

a₂/ a₁ = 2/5

a₃/a₂ = 2/5, it is an GP

Thus,

a₁₀ = a₁qⁿ⁻¹

    = 5*(2/5)⁹

    = 0.001

Thus, the 10th term round to the nearest thousandth of the geometric progression is found as 0.001.

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Answer:

  13 refrigerators and 7 pianos will NOT overload the truck

Step-by-step explanation:

For x refrigerators, their total weight is 300x.

For y pianos, their total weight is 525y.

The total weight of both of these together must not exceed 7600, so the inequality is ...

  300x +525y ≤ 7600

__

The point (x, y) = (13, 7) lies in the solution area. The truck will not be overloaded.

__

Check

  300(13) +525(7) = 7575 . . . this is less than 7600

Answer:

Step-by-step explanation:

Represent the number of refrigerators by r and that of pianos by p.

Then the total weight in the truck bed is calculated and we determine whether or not this total is less than the truck capacity.

Find the total weight of the load consisting of 13 refrigerators and 7 pianos.   The inequality given above becomes:

w(r, p) = (300 lb)r + (525 lb)p ≤ 7600 lb

w(13, 7) = (300 lb)13 + (525 lb)7 ≤ 7600 lb becomes:

w(13, 7) = 3900 lb + 3675 lb = 7575 lb

Since 7575 lb is just under the truck's capacity (7600 lb), the truck will not be overloaded.

SOLUTION

To find the percentage increase, we need to know the percentage change

Recall that

Where

Substitute into the formula above, we have

After simplification, we have

Therefore

The percentage increase is 10%

Answer:

Answer:

the polygon name is decagon

Step-by-step explanation:

sum exterior angles is 360

10 sides

360÷10=36

Answer:

decagon

Step-by-step explanation:

\( \frac{360 \degree }{size \: \: of \: \: \: \: the \: \: exterior \: \: angle} = number \: \: of \: \: sides \\ \\ \frac{360}{36} = 10 \: \: sides \\ \)

Name of the polygon which has 10 sides is decagon

Answer:

x=8.16

Step-by-step explanation:

x=the money before

2x=doubled

3x=24.50

x=8.16

Answer:

The answer would be...

Step-by-step explanation:

$12.25 Because if you divide $24.50 by 2 then you would get the amount of money William had before he got doubled which would be $12.25.

Hope this helped

:)

The domain and the range of a function is the set of input and output values of the function.

The domain is the set of all whole numbers.

The range is the set of all whole numbers.

Let the number of tickets be x, and the revenue be y.

So, the revenue function will be:

y = 125

The number of tickets cannot be less than 0.

So, the domain of the revenue function is

domain=0,∞

The above means that, the domain is the set of all whole numbers

Similarly, the revenue cannot be less than 0.

So, the range of the revenue function is

range = 0,∞

The above means that, the range is also the set of all whole numbers (in multiples of 125).

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Take intercepts from the graph:

Calculate the intercepts

Points are: (3, 0) and (0, - 9)

Ordered pairs given:

Take intercepts from the graph:

Calculate the intercepts:

Points are: (- 2, 0) and (0, - 4)

Answer:

Slope = -2

y-intercept = -3/5

Falling

Step-by-step explanation:

\(y= -2x - \frac{3}{5} \\ y = mx + b\)

m = Slope = -2

y-intercept = b =

\( - \frac{3}{5} \)

The slope of the equation has a negative number so the graph is falling

Answer:

5

Step-by-step explanation:

Answer: D, x < 8

Step-by-step explanation: Subtract 18 from both sides.

Simplify the expression

Subtract the numbers

Subtract the numbers

Divide both sides by the same factor, and flip the relation because the factor is negative

Cancel terms that are in both the numerator and denominator

Divide the numbers

−6x+18−18>−30−18=

=x<8

Answer:

Find the X and Y Intercepts 3x-5y=-20

Find the X and Y Intercepts 3x-5y=-20. 3x−5y=−20 3 x - 5 y = - 20. Find the x-intercepts. Tap for more steps

Step-by-step explanation:

Answer:

We can begin by simplifying each equation:

A. 52 = 8n + 4 can be rewritten as 48 = 8n or 6 = n

B. 4(2n + 1) = 52 can be simplified to 8n + 4 = 52 or 8n = 48 or 6 = n

C. 4=52-8n can be rewritten as 8n = 48 or 6 = n

D. 4n = 48 can be simplified to n = 12

Therefore, equations A, B, and C are equivalent, and equation D is not equivalent to the others.

So, the correct answers are A, B, and C.

Answer:

Step-by-step explanation:first you have to multiply then divide then add then subtract and then substitute and then you will get the answer.

Step-by-step explanation:

what do we need to do ?

just solve the system of 2 equations ?

as we have x and -x in the equations, we simply add both equations, get one summary equation just in y, solve for y, and then use one of the original equations to solve for x :

y = x - 4

y = -x + 2

----------------

2y = 0 - 2

2y = -2

y = -1

-1 = x - 4

3 = x

x = 3

y = -1

(a) A basis for the solution space of the homogeneous system of linear equations is:

{(-3, 1, 0, 0), (-5, 0, -5, 1)}

(b) The dimension of the solution space is 2.

To find a basis for the solution space, we first write the augmented matrix of the system and row-reduce it to its echelon form or reduced row-echelon form.

Then, we identify the free variables (variables that can take any value) and express the dependent variables in terms of the free variables. The basis for the solution space consists of the vectors corresponding to the free variables.

In this case, after performing row operations, we obtain the reduced row-echelon form:

[1 0 -1 -1 0]

[0 1 3 2 0]

[0 0 0 0 0]

The first and second columns correspond to the free variables x3 and x4, respectively. Setting these variables to arbitrary values, we can express x1 and x2 in terms of x3 and x4 as follows: x1 = -x3 - x4 and x2 = -3x3 - 2x4. Therefore, a basis for the solution space is {(-3, 1, 0, 0), (-5, 0, -5, 1)}.

Since the basis has 2 vectors, the dimension of the solution space is 2.

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Some other names for the unit rate are:

A general proportional relation is written as:

y = k*x

You can see that it goes through the origin because when we evaluate in x = 0, we get:

y = k*0 = 0

So it passes through (0, 0).

The value "k" has several names, unit rate is the one given here, but it is generally called the "constant of proportionality"

It is also called the slope (like in a linear equation with an y-intercept equal to 0).

Or the rate of change or gradient, which are equivalent terms that particularly in the case of linear equations are equal to the slope (but not for other functions).

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Answer:

Step-by-step explanation:

Answer

Answer:

50 miles per hour is the (Unit Rate)

Step-by-step explanation: