How long is 75% of a 24-hour day?

7(5 + t) - 4(t + 4) =

= 35 + 7t - 4t - 16 =

= 7t - 4t + 35 - 16 = 3t + 19

Answer:

By mail

Step-by-step explanation:

by mail

HAVE A NICE DAY!!!!!!

Answer:

\( 155 = {2}^{7} + {3}^{3} \)

Step-by-step explanation:

\( \because \: 155 = 128 + 27 \\ 128 = {2}^{7} \: \: and \: \: {3}^{3} \\ \\ \huge \red{ \boxed{ \therefore \: 155 = {2}^{7} + {3}^{3} }}\)

Answer: $4,222.50.

Step-by-step explanation:

Young people respond more favorably to literature that reflects their cultural customs, and this is because of the importance of cultural background in children’s reading development. Ethnic and cultural differences play an essential role in the children's reading development.

Children's cultural and ethnic background has a considerable impact on their learning, and thus the type of literature they respond to. Children tend to read more when they find that the stories and books reflect their cultural customs and identity. This enhances their literacy and reading skills, which in turn leads to an increased interest in reading and a better understanding of what they are reading.

Cultural diversity can help children become more empathetic and accepting of differences, and can help them to learn about new cultures. Therefore, it is crucial to provide children with access to a range of culturally diverse literature to help them understand the experiences of others. Children learn more effectively when they can make connections between what they are learning and their own experiences.

In conclusion, children's reading development is influenced by their ethnic and cultural background. Young people respond more favorably to literature that reflects their cultural customs, which can help them to become more empathetic and accepting of differences, as well as develop their literacy and reading skills. Therefore, it is essential to provide children with a range of culturally diverse literature to help them learn about new cultures and understand the experiences of others.

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Answer:

a° = c°

Step-by-step explanation:

parallelogram's opposite angles are equal

mathworldwolfram

The given loop will iterate four times, incrementing the value of 'n' by 1 each time, until 'n' reaches 5.

The given code snippet is a while loop that initializes the variable 'n' to 1 and continues to execute the loop as long as 'n' is less than 5. Inside the loop, the value of 'n' is incremented by 1 using the 'n++' statement. The loop will iterate four times since 'n' starts at 1 and stops when 'n' becomes equal to 5.

Here is a breakdown of the execution of the loop:

Initialization: n is set to 1.

Condition check: The condition 'n < 5' is evaluated. Since 1 is less than 5, the loop body is executed.

Loop body: The value of 'n' is incremented by 1 using 'n++', so 'n' becomes 2.

Condition check: The condition 'n < 5' is evaluated again. Since 2 is less than 5, the loop body is executed again.

Loop body: The value of 'n' is incremented by 1, so 'n' becomes 3.

Condition check: The condition 'n < 5' is evaluated. Since 3 is less than 5, the loop body is executed once more.

Loop body: The value of 'n' is incremented by 1, so 'n' becomes 4.

Condition check: The condition 'n < 5' is evaluated. Since 4 is less than 5, the loop body is executed for the final time.

Loop body: The value of 'n' is incremented by 1, so 'n' becomes 5.

Condition check: The condition 'n < 5' is evaluated. Since 5 is not less than 5, the loop terminates, and the execution continues with the code following the loop.

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The experiment of drawing two cards without replacement from a deck consisting of only the ace through 10 of a single suit (e.g., only hearts) has a sample space consisting of all possible pairs of cards that can be drawn. There are a total of 45 possible outcomes in the sample space.



Ai = {(j,k) : j + k = i, where j and k are values of the cards in the suit}
For example, if i = 7, then the event A7 consists of the following outcomes:
A7 = {(1,6), (2,5), (3,4), (4,3), (5,2), (6,1)}

Note that we have excluded the outcome (1,1) from this event, since we are assuming that an ace counts as 1 and not 11. If we wanted to include the possibility of an ace being worth 11, we would need to modify the definition of Ai to account for this. However, the problem statement specifies that we should treat the aces as having a value of 1, so we will stick with this convention.

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Answer: 3(x+4)<-12 and x+4<4

Step-by-step explanation:

3|x+4| - 5 < 7

The two inequalities which is used to find the solution to this absolute value inequality 3 |x + 4| - 5 < 7 are;

⇒ x - 4 < 4

And, x - 4 > - 4

A relation by which we can compare two or more mathematical expression is called an inequality.

Given that;

The inequality is,

⇒ 3 |x - 4| - 5 < 7

Now,

Since, The inequality is,

⇒ 3 |x - 4| - 5 < 7

Solve as;

⇒ 3 |x - 4| - 5 + 5 < 7 + 5

⇒ 3 |x - 4| < 12

⇒ |x - 4| < 4

This gives two solution as;

⇒ x - 4 < 4

And, x - 4 > - 4

Thus, The two solutions are;

⇒ x - 4 < 4

And, x - 4 > - 4

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We have this expression:

We need to do the following steps to solve the equation for t:

Then, t is the same as:

Then, the answer is (A - p)/pr.

Answer:

Do you still need help???

Answer:

-7x - 12

Step-by-step explanation:

To simplify the expression, we need to get rid of the parentheses and combine like terms. We can use distributive property to multiply each term inside the parentheses by the sign outside.

Therefore, the expression (-2x-10) - (-5x + 2) - 10x simplified is -7x - 12.

Answer:

Diagonals of a kite are perpendicular.

The z-score for x = 30.2 is approximately -0.49.

What is z-score measures?

The z-score, also known as the standard score, is a measure used in statistics to quantify the number of standard deviations that a given data point is from the mean of a dataset.

To calculate the z-score for x = 30.2, we use the formula:

z = (x - μ) / σ

where x is the observed value, μ is the population mean, and σ is the population standard deviation. In this case, we are given the sample mean and sample standard deviation, so we will use them as estimates for the population parameters.

Substituting the given values, we have:

z = (30.2 - 33.7) / 7.2

Simplifying, we get:

z = -0.49

Rounding to two decimal places, we have:

z ≈ -0.49

Therefore, the z-score for x = 30.2 is approximately -0.49.

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The probability that a black card is chosen first and a heart is chosen second is one-eighth (1/8).

Probability is defined as the likeliness of an event to occur. The probability of any event to occur ranges from 0 to 1, and the sum of all the probabilities of all the events happening is 1.

probability = desired outcome / total outcomes

Let P(E) = probability of selecting a black card first and a heart second

If two cards are chosen at random from a deck, one at a time, and replaced after each pick, then the P(E) is equal to the product of the probability selecting a black card and the probability of selecting a card that is heart.

For a deck of 52 cards, 26 are black, and 13 are hearts.

P(E) = P(black, heart)

P(E) = (26/52)(13/52)

P(E) = 1/8

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Answer:

20.9 m

Step-by-step explanation:

Use Pythagorean theorem,

Hypotenuse² = base² + altitude²

                     = 20² + 9²

                     = 400 + 36

                     = 436

hypotenuse = √436 = 20.88 = 20.9 m

The average value of the function is 1/2. Option D

The question is posted under "Average Rate of Change"

The average rate of change of a continuous function f on a closed interval, {a, b} is written as;

\(\frac{f(b) - f(a)}{b - a}\)

In this case, we have that;

\(\frac{sin^2(\pi ) - sin^2(0)}{\pi - 0}\) = 0-0/π = 0

From the information given, we have the average value written as;

The average value of an continuous function f,  on the interval, {a, b} is;

\(\frac{1}{b - a} \int\limits^b_af( {x}) \, dx\)

Then, we have to substitute the values, we get;

\(\frac{1}{\pi - 0} \int\limits^\pi _0 sin^2 {x} \, dx\)

then, we get;

1/π(π/2)

Multiply the  values, we have;

1/2

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Answer:

  x ≈ -8.402, 8.502

Step-by-step explanation:

The usual methods of solving quadratic equations apply to this one. Any of them can be used: graphing, factoring, completing the square, quadratic formula.

Often, when the coefficients are non-integers and have no obvious relationship to each other, the most convenient method of solution is the quadratic formula. It tells you the solution to ax²+bx+c=0 is ...

  \(x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\)

Your equation has the coefficients, a = -0.07, b = 0.007, c = 5, so the solutions are ...

  \(x=\dfrac{-0.007\pm\sqrt{0.007^2-4(-0.07)(5)}}{2(-0.07)}=\dfrac{-0.007\pm\sqrt{1.400049}}{-0.14}\\\\x=0.05\pm\sqrt{\dfrac{200007}{2800}}=0.05\pm\sqrt{71.4310\overline{714285}}\\\\\boxed{x\approx\{-8.40169,\,8.50169\}}\)

Answer:

\(t=8.50, -8.40\:\: \sf (2 \:d.p.)\)

Step-by-step explanation:

Quadratic equations are in the form \(ax^2+bx+c=0\),  where \(a\neq 0\).

There are three basic methods to solve quadratic equations algebraically:

Given quadratic equation:

\(h(t)=-0.07t^2+0.007t+5\)

Method 1 - Factoring

If the trinomial is able to be easily factored, set the equation equal to zero and factor.  Set each factor equal to zero and solve.

As the given example is not easily factored, factoring is not the best method to use on this occasion.

Method 2 - Completing the Square

If the quadratic expression is not able to be easily factored, try completing the square.

Divide all terms by \(a\) (-0.07):

\(\implies t^2-\dfrac{1}{10}t-\dfrac{500}{7}=0\)

Move the constant to the right side:

\(\implies t^2-\dfrac{1}{10}t=\dfrac{500}{7}\)

Add the square of half the coefficient of t to both sides:

\(\implies t^2-\dfrac{1}{10}t+\left(-\dfrac{1}{20}\right)^2=\dfrac{500}{7}+\left(-\dfrac{1}{20}\right)^2\)

\(\implies t^2-\dfrac{1}{10}t+\dfrac{1}{400}=\dfrac{200007}{2800}\)

Factor the perfect trinomial:

\(\implies \left(t-\dfrac{1}{20}\right)^2=\dfrac{200007}{2800}\)

Square root both sides:

\(\implies t-\dfrac{1}{20}=\pm\sqrt{\dfrac{200007}{2800}\)

Add 1/20 to both sides:

\(\implies t=\dfrac{1}{20}\pm\sqrt{\dfrac{200007}{2800}\)

As decimals to 2 decimal places:

\(\implies t=8.50, -8.40\:\:\sf(2 \:d.p.)\)

Method 3 - Quadratic Formula

\(x=\dfrac{-b \pm \sqrt{b^2-4ac} }{2a}\)

This can be used to find both real and imaginary or complex solutions.

Identity the variables:

\(a=-0.07, \quad b=0.007, \quad c=5\)

Substitute the values into the quadratic formula and solve for t:

\(\implies t=\dfrac{-0.007 \pm \sqrt{0.007^2-4(-0.07)(5)} }{2(-0.07)}\)

\(\implies t=\dfrac{-0.007 \pm \sqrt{1.400049}}{-0.14}\)

\(\implies t=\dfrac{0.007 \pm \sqrt{1.400049}}{0.14}\)

\(\implies t=8.50, -8.40\:\: \sf (2 \:d.p.)\)

Finally, a non-algebraic method of solving a quadratic equation is by graphing using a graphical calculator (see attached).  The solutions are the points at which the curve intercepts the x-axis.

150 cm

look at the beginning of the axis. it goes 140 to 160. then 160 to 170. it isnt in order. the missing mumber is 150

y=1/2+4

y=2+4

y=6

or

y=1/2+4

y=1/6

y=6

Those homeworks are so easy lmaøoo

Answer:

To graph the equation of a line written in slope-intercept (y=mx+b) form, start by plotting the y-intercept, which is the b value. The y-intercept is where the line will cross the y-axis, so count up or down on the y-axis the number of units indicated by the b value. From the y-intercept point, use the slope to find a second point. The numerator of the slope tells you how many units to move up or down from the intercept, and the denominator of the slope tells you how many units to move left or right in order to plot the second point. Connect the two points and draw arrows at either end to indicate that the line extends infinitely.

Step-by-step explanation:

Since the equation is in y=mx+B form, M is the value of we can use B as the Y_Intercept and M as the slope.

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Answer:

I think the answer is 255cm squared

Step-by-step explanation:

If you look at the shape it has 2 shapes. A rectangle and a triangle.

17-10 to get the height of the triangle = 7

22-12 to get the base of the triangle = 10

The area to find a triangle is 1/2 * b * h

= (7 *10) / 2

= 35

To find the rectangle =

22 * 10

= 220

To find the area of the whole thing =

35 (triangle) + 220 (rectangle) = 255cm squared

Answer:

255 cm^

Step-by-step explanation:

If you cut your shape into a triangle and rectangle...or a trapezoid and a rectangle, then add the areas together.

Area of a rectangle is just length × width.



Area of a triangle is:

A = 1/2bh

Area of a trapezoid is:

A = 1/2(b1 + b2)

see image to see two different ways to cut the whole shape into two pieces. Then we calculate the total by adding the areas of the parts.

see image.

Answer:

sin B = 24/25

cos B = 7/25

tan B = 24/7

Step-by-step explanation:

Use the trigonometric functions:

sin θ = Opposite/Hypotenuse

cos θ = Adjacent /Hypotenuse

tan θ = Opposite/Adjacent

sin B = 24/25

cos B = 7/25

tan B = 24/7

Subtracting the second equation from the first one we get:

Substituting x=2 in the first equation and solving for y we get:

Answer: x=2 and y=-3.

SOLUTION

The shape is a parallelogram

The consecutive angle of a parallelogram is supplementary that is added up to 180 degree

Hence we have

Therefore the right option is D

A nonlinear regression model is represented by the equation y = 1/(a0 + B1x) + u, thus option C is the correct answer.

The nonlinear regression model is an extension of the linear regression model. It's used to fit more complex models to data and determine the relationship between variables that cannot be explained by a straight line. A nonlinear regression model is a statistical method that analyzes data that is not linear. There are many forms of nonlinear regression models, each with its assumptions and properties. These models are frequently used in finance, economics, biology, engineering, and other fields to predict outcomes that can not be predicted using linear regression models. Nonlinear regression models are advantageous over linear models because they are more accurate, as they can model data that does not conform to a straight line.

A nonlinear regression model can be expressed in a general way as y = f (x, β) + ε, where y is the dependent variable, x is the independent variable, β is the set of unknown parameters, f( ) is the nonlinear function, and ε is the error term. The model requires the estimation of the unknown parameters in β. This type of model can be used to model several types of non-linear phenomena such as exponential growth and decay, power laws, and asymptotic trends.

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There will be approximately 22,427 bacteria left after 19 hours.

To solve this problem, we need to use the concept of exponential decay. Exponential decay occurs when a quantity decreases at a constant rate over time. In this case, the bacteria population is decreasing at a constant rate over time.

To find out how many bacteria will be left after 19 hours, we can use the formula for exponential decay:

N = N0 * e^(-kt)

where N is the final number of bacteria, N0 is the initial number of bacteria, k is the decay constant, and t is the time elapsed.

We know that the initial number of bacteria is 380,000 and the final number of bacteria is 600. We also know that the time elapsed is 42 hours. Using these values, we can find the decay constant k:

600 = 380,000 * e^(-k*42)

Dividing both sides by 380,000:

0.001578947 = e^(-k*42)

Taking the natural logarithm of both sides:

ln(0.001578947) = -k*42

Solving for k:

k = -ln(0.001578947) / 42

k = 0.0279

Now that we know the decay constant k, we can use the formula to find out how many bacteria will be left after 19 hours:

N = N0 * e^(-kt)

N = 380,000 * e^(-0.0279*19)

N = 22,427

Therefore, there will be approximately 22,427 bacteria left after 19 hours. We round this number to the nearest whole number, which is 22,000.

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The problem of selecting 27 people out of 82 volunteers involves combinations.

To determine whether the problem involves permutations or combinations, we need to consider two main factors: the order of selection and whether repetition is allowed.

In permutations, the order of selection matters, which means that different arrangements of the same elements are considered distinct outcomes.

In the given problem, the researcher needs to select 27 people out of a larger group of 82 volunteers. The problem does not mention anything about the order in which the people are selected.

To calculate the number of ways to select 27 people from a group of 82, we can use the concept of combinations. The formula for combinations is given by:

C(n, r) = n! / (r! * (n - r)!)

In this formula, n represents the total number of items (volunteers in this case), and r represents the number of items to be selected (27 people in this case). The exclamation mark (!) denotes the factorial operation.

Applying the formula to the given problem, we have:

C(82, 27) = 82! / (27! * (82 - 27)!)

Since the problem does not require solving it, we can leave the calculation as it is. However, if you want to find the numerical value, you can use a calculator or software that supports factorial calculations.

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Answer:

3

Step-by-step explanation:

i just took the test and put 2 and that was wrong

Answer:

2248+2224.91= 4472.91

Step-by-step explanation:

A = $2,248.00

I = A - P = $248.00

Equation:

A = P(1 + rt)

Calculation:

First, converting R percent to r a decimal

r = R/100 = 3.1%/100 = 0.031 per year.

Solving our equation:

A = 2000(1 + (0.031 × 4)) = 2248

A = $2,248.00

The total amount accrued, principal plus interest, from simple interest on a principal of $2,000.00 at a rate of 3.1% per year for 4 years is $2,248.00.

A = $2,224.91

A = P + I where

P (principal) = $2,000.00

I (interest) = $224.91

Calculation Steps:

First, convert R as a percent to r as a decimal

r = R/100

r = 2.7/100

r = 0.027 rate per year,

Then solve the equation for A

A = P(1 + r/n)nt

A = 2,000.00(1 + 0.027/1)(1)(4)

A = 2,000.00(1 + 0.027)(4)

A = $2,224.91

Summary:

The total amount accrued, principal plus interest, with compound interest on a principal of $2,000.00 at a rate of 2.7% per year compounded 1 times per year over 4 years is $2,224.91.