find the value of y-7 when y=15​

Answer:

5

1/7 5 times is 5/7

Answer:

Im sorry but there is no question..!

Step-by-step explanation:

Step-by-step explanation:

where is question. ..........

what we have to explain correct or incorrect

The measure of central tendency that is used by the professor is; Mode

A measure of central tendency is defined as a single value that attempts to describe a set of data by identifying the central position within that set of data. The types of measures of central tendency are;

1) Mean; This is defined as the average value of a given set of data.

2) Median: This is defined as the midpoint of a frequency distribution of observed values or quantities, such that there is an equal probability of falling above or below it.

3) Mode: This refers to the value in a given set of data that has highest occurrence frequency.

In this case, the professor notes that most students in his class earned a grade of b. Thus, this is the mode.

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Answer:

\(5\times10^3\)

Step-by-step explanation:

\(3.55\times10^6 \div 7.1 \times 10^2\)

Exponents are positive:

\(3.5.5.0.0.0.0. = 3550000\)

\(7.1.0.=710\)

\(3550000 \div 710 = 5000\)

Convert back into scientific notation:

\(5000 = 5 \times 10^3\)

\(= 5 \times10^3\)

Hope this helps.

Answer: 5 x 10^3

Step-by-step explanation:

Answer:

1 hours and 55 minute?

Step-by-step explanation:

The domain of the relation in the graph is:

{-2, -1, 0, 2, 5}

A relation maps elements from one set (the domain) into elements from another set (the range).

Such that the domain is represented in the horizontal axis.

In the graph, we can see the points:

{(-2, -3), (-1, -1), (0, 3), (2, 1), (5, 2)}

The domain is the set of the first values of these points, then the domain is:

{-2, -1, 0, 2, 5}

The correct option is the first one.

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The given equation is verified using double angle identities showing that 2cos^4(x) - 2sin^4(x) = 4cos(2x)

To use the double angle identities, we can start with the identity:

cos(2x) = cos^2(x) - sin^2(x)

We can rearrange this to get:

cos^2(x) = (1 + cos(2x))/2

sin^2(x) = (1 - cos(2x))/2

Substituting these into the left-hand side of the equation we want to verify, we get:

2cos^4(x) - 2sin^4(x)

= 2(cos^2(x))^2 - 2(sin^2(x))^2

= 2[(1 + cos(2x))/2]^2 - 2[(1 - cos(2x))/2]^2

= (1 + cos(2x))^2 - (1 - cos(2x))^2

= 1 + 2cos(2x) + cos^2(2x) - 1 + 2cos(2x) - cos^2(2x)

= 4cos(2x)

Thus, we have shown that:

2cos^4(x) - 2sin^4(x) = 4cos(2x)

So, the given equation is verified using double angle identities.

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Answer: P = 2((49h²+42h+9)(64h²-64h+16))

Step-by-step explanation:

Answer: last option

Step-by-step explanation:

please mark brainliest

Answer:

\(a_4=19\)

Step-by-step explanation:

Given:

\(\implies a_2=a_{1}+4=7+4=11\)

\(\implies a_3=a_{2}+4=11+4=15\)

\(\implies a_4=a_{3}+4=15+4=19\)

Put values get answer

Answer:

443.14

Step-by-step explanation:

A=6ah+33a2

=6·4·15+3·3·42

≈443.13844

Answer:

I believe the answer is 88 if correct please consider brainliest

<3

Step-by-step explanation:

Answer:

66,5 sm

Step-by-step explanation:

The sides of a triangle: 2x+7x+3x=114

12x=114

x=9,5

2×9,5=19,

7×9,5=66,5

3×9,5=28,5

Answer: 66,5

Landon would need to invest approximately $1,150 to reach a future value of $3,250 in 18 years with an interest rate of 6.6% compounded daily.

To determine how much Landon needs to invest, we can use the compound interest formula, which is:

A = P(1 + r/n)^(nt)

where A is the future value of the account, P is the principal amount (the amount Landon needs to invest), r is the interest rate (in decimal form), n is the number of times the interest is compounded per year, and t is the number of years.

In this case, the interest rate is 6.6% or 0.066, the account is compounded daily, so n = 365, and t = 18. We want to find the principal amount, P, that will result in a future value of $3,250.

Substituting these values into the formula, we get:

3,250 = P(1 + 0.066/365)^(365*18)

Simplifying the right-hand side of the equation, we get:

3,250 = P(1.000181)^6,570

Dividing both sides by (1.000181)^6,570, we get:

P = 3,250 / (1.000181)^6,570

Using a calculator, we can evaluate this expression to find that:

P ≈ $1,150.52

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True. In a pairwise scatter plot matrix, each scatterplot represents the relationship between two variables.

Since the scatterplot between variable X and variable Y is the same as the scatterplot between variable Y and variable X, the matrix is perfectly symmetric.

The scatterplot at the lower-left corner is indeed identical to the one at the upper-right corner. This symmetry is a result of the fact that the relationship between X and Y is the same as the relationship between Y and X.

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You would need to contribute approximately $2,145.44 annually at the end of each year from ages 25 to 60 in order to receive an annual annuity of $54,301 from ages 65 to 95.

To determine the annual contribution required to receive an annual annuity of $54,301 for 30 years, we can use the present value of an annuity formula:

PV = P * [(1 - (1 + r)^(-n)) / r]

Where:

PV = Present Value of the annuity

P = Payment per period (annual annuity payment)

r = Interest rate per period (EAR)

n = Number of periods (number of years)

In this case, the payment per period is $54,301, the interest rate per period is 7.8% (EAR), and the number of periods is 30 years.

We need to find the present value of the annuity at age 25, which will be the accumulated value of the contributions from ages 25 to 60 until age 65.

PV = P * [(1 - (1 + r)^(-n)) / r]

PV = P * [(1 - (1 + 0.078)^(-30)) / 0.078]

Now, we can rearrange the formula to solve for P:

P = PV / [(1 - (1 + r)^(-n)) / r]

P = $54,301 / [(1 - (1 + 0.078)^(-30)) / 0.078]

Using a calculator, we can evaluate the expression to find that the annual contribution required is approximately $2,145.44.

Therefore, You would need to contribute approximately $2,145.44 annually at the end of each year from ages 25 to 60 in order to receive an annual annuity of $54,301 from ages 65 to 95.

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Answer:

Step-by-step explanation:

To achieve better accuracy when adding the numbers from 0.01 to 1.00, it is recommended to add the numbers in ascending order (from smallest to largest) to minimize the accumulation of rounding errors and maintain higher precision during intermediate calculations. Thus, starting with 0.01 and ending with 1.00 would provide better accuracy.

To achieve better accuracy when adding the numbers from 0.01 to 1.00, it is generally recommended to use an order that minimizes the accumulation of rounding errors. In this case, it is advisable to start with the smaller numbers and progress towards the larger ones.

By adding the numbers in ascending order (from 0.01 to 1.00), the rounding errors at each step will have a smaller impact on the overall result. This is because adding smaller numbers together first helps maintain a higher level of precision during intermediate calculations.

Therefore, to achieve better accuracy, you should add the numbers in ascending order, starting with 0.01 and ending with 1.00.

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The the approximate value of √8  is option B: between 2.8 and 2.9

An approximate number is a value derived close to the exact figure, yet a slight variance remains present. It is used to show that exact figures are precise and require no estimation.

However, these numbers are seen as estimates since their exact representation cannot be achieved through a finite number of digits. A close but lower value than a number is known as its approximate value by defect, with a desired level of accuracy.

Therefore, the radical expression for the square root of 8 is √8, but it can also be written as 2√2. Additionally, it can be expressed as a fraction, which is approximately equal to 2.828. Hence option B is correct.

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On solving the provided question we can say that the equation will be M(t) = 2, 386.40 – (0.82) and 9Hrs, time has passed since the cooling process began.

A mathematical equation is a formula that joins two statements and uses the equal symbol (=) to indicate equality. A mathematical statement that establishes the equality of two mathematical expressions is known as an equation in algebra. For instance, in the equation 3x + 5 = 14, the equal sign places the variables 3x + 5 and 14 apart. The relationship between the two sentences on either side of a letter is described by a mathematical formula. Often, there is only one variable, which also serves as the symbol. for instance, 2x – 4 = 2.

here,

A materials fabrication company heats a mixture to 2,400 F

If the temperature of the mixture is 400F,

time has passed since the cooling process began will be

the equation will be M(t) = 2, 386.40 – (0.82)

so 9Hrs, time has passed since the cooling process began.

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Answer:

1.8/2 = 0.9 1.8+0.9 = 2.7. The answer is 2.7

Step-by-step explanation:

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When a boy who is 1.8 meters tall stands 1 meter away from a lamppost and casts a shadow that is 2 meters long, the lamppost will be 2.7 meters tall.

In mathematics, a fraction is used to denote a portion or component of the total. It stands for the proportionate pieces of the whole. Numerator and denominator are the two components that make up a fraction. The numerator is the number at the top, while the denominator is the number at the bottom. The components of a whole or group of items are represented by fractions. A fraction consists of two components. The numerator is the figure at the top of the line. It details the number of equal portions that were taken from the total or collection. The denominator is the figure that appears below the line.

Here,

1.8/2 = 0.9

1.8+0.9 = 2.7

The height of the lamppost is meters will be 2.7 m when a boy who is 1.8 meters tall stands 1 meter away from a lamppost and casts a shadow 2 meters long.

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The variables of interest are grades or study habits, height would not be a factor that affects these variables. Therefore, selecting the four tallest students would not be a random sample.

Suppose you are assigned the number 1, and the other students in your statistics class call out consecutive numbers until each person in the class has his or her own number. To get a random sample of four students from your statistics class, you could use a random number generator to select four numbers between 1 and the total number of students in the class.

Then, you would choose the students with those corresponding numbers as your random sample.(a) The first four students walking into the classroom would not necessarily form a random sample because there could be some sort of ordering or trend to the way students arrive that could bias the sample. For example, the first students to arrive could be the most punctual students, which could be related to other factors that affect the variables of interest.

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Answer:

The median is 2

Step-by-step explanation:

The middle number of the data set(highlighted dots) is 2.

Hope this helps!

:)

Answer:

78.67%

Step-by-step explanation:

295 percent of 375 is 78.67%

295/375 x 100 = 78.67%

The amount of tax Carys paid last year was £6,920.

The amount of tax paid or the total tax liability is computed using the given graduated tax rates.

The first £11,000 taxable earnings are tax-free.  Note that the taxable earnings are computed after subtracting tax credits and deductions from the gross earnings.

The next taxable earnings for Carys are £34,600, which is the difference between gross taxable earnings and the £11,000 that is tax-free.

The taxable earnings after the second tax grade do not exceed £43,000 for the application of the third tax rate of 40%.

Given tax rates:

No tax on the first £11 000 of earnings = 0%

Earnings in excess of £11 000 and up to £43 000 = 20%

Earnings in excess of £43 000 and up to £150 000 = 40%

Earnings over £150 000 = 45%

Carys' last year's earnings before tax = £45,600

First £11,000 = £0 (£11,000 x 0%)

Next taxable earnings = £34,600 = (£45,600 - £11,000)

Tax liability = £6,920 (£34,600 x 20%)

Thus, Carys paid £6,920 in tax liability for last year.

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When a buh wa firt planted in a garden,it wa 12 inche tall. After two week, it wa 120% a tall a when it wa firt planted. Tall wa the buh after the two week is   \(\\26 \frac{2}{5}\).

What is improper fractions?

An improper fraction is a fraction whose numerator is equal to or greater than its denominator. 3/4, 2/11, and 7/19 are proper fractions, while 5/2, 8/5, and 12/11 are improper fractions.

12 times 120% + 12

12*120%+12

\($$\begin{aligned}& 120 \% \text { in fractions: } \frac{6}{5} \\& =12 \times \frac{6}{5}+12\end{aligned}$$\)

Follow the PEMDAS order of operations

Multiply and divide (left to right) \($12 \times \frac{6}{5}: \frac{72}{5}$\)

\(=\frac{72}{5}+12$$\)

Add and subtract (left to right) \($\frac{72}{5}+12: \frac{132}{5}$\)

\(=\frac{132}{5}$$\)

Convert improper fractions to mixed numbers: \($\frac{132}{5}=26 \frac{2}{5}$\)

\(=26 \frac{2}{5}$$\)

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The length of the hypotenuse of the triangle is 5√2.

In geometry, a triangle is defined as the shape which has three sides and also has three angles. We can say that a triangle is a type of polygon with three sides and three vertex. Triangle follows angle sum theorem.

Some important formula of triangles are:

Right triangle or right angled triangle is a triangle which has one 90 degree of angle . This angle is formed between the base and perpendicular lines while the third tilted line is known hypotenuse.

In the question given,

Given, AC = CB = 5

we have to find hypotenuse,

using Pythagoras theorem \(Hypotenuse^2 = Base^2 + Perpendicular^2\)

=> \(AC^2 + BC^2 = AB^2\)

=> AB = √25 + 25 = √50 = 5√2.

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Step-by-step explanation:

To find the points of a parabola given the quadratic equation using substitution, follow these steps:

1. Write the quadratic equation in standard form: y = ax^2 + bx + c

2. Substitute the x-coordinate of the point you want to find into the equation.

3. Solve for the y-coordinate using algebraic operations.

4. Write the point as (x, y).

For example, let's say we have the quadratic equation y = 2x^2 - 4x + 3 and we want to find the point when x = 1.

1. The equation in standard form is y = 2x^2 - 4x + 3

2. We substitute x = 1: y = 2(1)^2 - 4(1) + 3

3. We solve for y: y = 2 - 4 + 3 = 1

4. The point is (1, 1)

Repeat the process for other x-values to find more points on the parabola.