-5x^2+51=6 or -5x^2+51=6. SOLVE ASAP

This type of study is prospective cohort study.

Controls consist of individuals from the source population who do not have the outcome of interest. Case-base sampling (also known as "case-cohort" sampling): Controls are selected from the population at risk at the beginning of the follow-up period in the cohort study within which the case-control study was nested.

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Answer:

1.55

Step-by-step explanation:

Answer:

a=33 ( vertically opposite angles)

a+90=b( sum of opposite interior angle is equal exterior angle)

33+90 = b

b=123

Answer:

3,975.16 United States Dollar

Step-by-step explanation:

The two inequalities that define the shaded region in the diagram are:

y ≥ 4 and y < x

For the solid vertical line, the slope (m) is 0. The inequality sign we would use would be "≥"  because the shaded region is to the left and the boundary line is solid.

The y-intercept is at 4, therefore, substitute m = 0 and b = 4 into y ≥ mx + b:

y ≥ 0(x) + 4

y ≥ 4

For the dashed line:

m = change in y / change in x = 1/1 = 1

b = 0

the inequality sign to use is: "<"

Substitute m = 1 and b = 0 into y < mx + b:

y < 1(x) + 0

y < x

Thus, the two inequalities are:

y ≥ 4 and y < x

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Answer:

The height of the flagpole is approximately 33.16 ft.

Step-by-step explanation:

Use ratio and proportion

Let h be the height of the flagpole

\(\frac{h}{43ft} =\frac{64 in}{83in}\\ h = \frac{43ft(64in)}{83in} \\h = 33.16ft\)

Answer:

6

Step-by-step explanation:

total spent is equal to 68 and helmet costs 32 so 6 replacement wheels cost

68-32= 36

to find cost of each replacement wheels were devide cost of 6 wheels by 6

36/6= 6

Answer:

$6

Step-by-step explanation:

6x + 32 → 68

6x → 68 - 32

6x → 36

x → 6

So each spare wheel cost is $6.

As a result of answering the given question, we may state that As a expressions result, the pool was used by 311 children.

An expression in mathematics is a combination of numbers, variables, and mathematical operations (such as addition, subtraction, multiplication, division, exponentiation, and so on) that expresses a quantity or a value. Expressions might be simple, such as "3 + 4", or complex, such as "(3x2 - 2) / (x + 1)". They can also include functions like "sin(x)" or "log(y)". Expressions can be evaluated by substituting values for the variables and performing the mathematical operations in the order specified. For example, if x = 2, the formula "3x + 5" evaluates to 3(2) + 5 = 11. Expressions are frequently used in mathematics to express real-world situations, create equations, and simplify complex mathematical problems.

To indicate the number of children and adults who used the pool, we'll use two variables. Let:

Let x denote the number of children and y the number of adults.

We can deduce from the problem:

x + y = 402 (the total number of individuals who used the pool) (the total number of people who used the pool)

1.5x + 2y = 648.5 (the total revenue from entrance) (the total revenue from admission)

We can solve for x and y using these two equations.

\(x + y = 402\sx = 402 - y\\1.5x + 2y = 648.5 1.5(402 - y) + 2y = 648.5 603 - 1.5y + 2y = 648.5\)

The pool was visited by 91 adults. The first equation can be used to calculate the number of children:

\(x + y = 402\sx + 91 = 402\sx = 311\)

As a result, the pool was used by 311 children.

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Answer:

The answer is 0.02

Step-by-step explanation:

1/50=0.02

The resulting triangle is 9/5 the original triangle.

The focuses in the direction planes are A(0, 2), B(2, 1), C(- 2, - 2). In the event that the scale factor is 2, each direction point of the first triangle is duplicated by the scale factor 2. Subsequently, the expanded triangle will be A'B'C' and the direction focuses got are A'(0, 4), B'(4, 2), C'(- 4, - 4).

Let we have a triangle ABC,If this triangle undergoes a dilation with a scale factor of 9/5,

Then changed triangle is  A'B'C'

So, relation between them is A'B'C' = 9/5(ABC)

Thus, the resulting triangle is 9/5 multiple of triangle ABC.

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Answer:

No.

Step-by-step explanation:

The definition of a function is that every output (x) has only one input (y).

Here -3 gives two different outputs which contradicts the definition of a function.

The type of disruptive language among the given options is "slang". Therefore the correct option is C.

Disruptive language is a communication technique used to derail or interrupt a conversation, a talk, or a meeting with the goal of influencing, winning, or discrediting others.

This can be accomplished through the use of various language strategies, including interruptions, profanity, personal attacks, and more.

Therefore, the type of disruptive language among the given options is "slang".

Slang is defined as a type of language that consists of words and phrases that are thought to be more informal than those found in standard dictionaries. Slang can be region-specific or linked to a particular profession or social group, and it is frequently linked with youth culture.

The type of disruptive language among the given options is "slang". Therefore the correct option is C.

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Answer:

Sophia's monthly spent on food is $300 while she wants to spend $245.

As her real monthly spent is greater than what she wants, she is not meeting the 10% criteria. In fact, she exceed her budget for month

Step-by-step explanation:

Net income of Sophia = $2,450

% of money she wants to spend on food = 10% of Net income of Sophia

thus,

Amount of money she wants to spend on food in $

           =  10% of $2,450

           = 10/100 * $2,450 = $245

Hence, Sophia wants to spend $245 in a month on food.

__________________________

it is given that last week she spent $75 on food

thus, weekly spent on food = $75

as there are 4 weeks in a months

money spent by her in 4 weeks = $75* 4 = $300

Thus, her monthly spent on food is $300 while she wants to spend $245.

As her real monthly spent is greater than what she wants, she is not meeting the 10% criteria. In fact, she exceed her budget for month

Answer:

15

Step-by-step explanation:

AB+BC=AC

2X+3+(4X-11)

6X-8=28

6x= 36

x=6

then ab= 2(6)+3

=15

bc= 4(6)-11

=13

ac=ab+bc

=15+13

=28

Answer:

The mathematical property demonstrated by the statement 3 + (-6) = -6 + 3 is the commutative property of addition.

This states that: A + B = B + A

The commutative property of addition is the property that is demonstrated by the formula "3 + (-6) = -6 + 3".

This characteristic states that the sum is unaffected by the sequence in which two numbers are added. In other words, a + b = b + a for any two numbers a and b.

In this instance, the left side has 3 + (-6) which equals -3. We have -6 + 3 on the right side, which also equals -3. This indicates that the result is unaffected by the sequence in which the numbers are added.

We can thus write:

3 + (-6) = -6 + 3

-3 = -3

This demonstrates the truth of the assertion and serves as an illustration of the commutative property of addition.

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Answer:

3 on the other side and 7 and 7 on the sides

Step-by-step explanation:

The statement is false.

The width of a confidence interval depends on several factors, including the sample size, the variability of the data, and the desired level of confidence.

Doubling the population size will increase the total number of possible observations and may increase the sample size, which can lead to a narrower confidence interval.

However, if the variability of the data remains the same or increases, the confidence interval may become wider. Additionally, if the desired level of confidence is increased, the confidence interval will also become wider.

Therefore, the impact of doubling the population size on the width of a confidence interval cannot be determined without considering these other factors.

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The point-slope form is;

Here, we want to write the slope intercept formula for the given line and point

We have the general point-slope form as;

Answer:

no idea

Step-by-step explanation:

Jk the answers square

Answer: The slope is -2x. The slope intercept form is Y = -2x - 4

Step-by-step explanation:

Get y by itself just like you are solving for it, all you need to do is subtract 2x

y = -2x - 4

The regression analysis can be used to fit a parabola to a set of data and plot the parabola and data to visualize the relationship between x and y. By using regression analysis, we can find the best-fitting parabola and gain insights into the underlying trends in the data.

Regression analysis can be used to fit a parabola to a set of data by finding the coefficients of the quadratic equation y = ax^2 + bx + c that best fit the data. This can be done using least squares regression, where the sum of the squared differences between the predicted values of y and the actual values of y is minimized.

To plot the parabola and the data, we can use a graphing calculator or a spreadsheet program like Excel. First, we input the data points into the spreadsheet and then use the regression analysis tool to find the coefficients a, b, and c that best fit the data. Once we have the coefficients, we can plot the parabola using the equation y = ax^2 + bx + c.

After plotting the parabola, we can overlay the data points to see how well the parabola fits the data. If the parabola fits the data well, the data points should be clustered around the curve of the parabola. If the parabola does not fit the data well, there may be outliers or other factors that are affecting the relationship between x and y.

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Answer:

C.-20(X+2)

Step-by-step explanation:

I think you wrote -20% by mistake instead of -20x

The area of the triangle is mathematically given as

A=20.8cm

This is further explained below.

The region that is surrounded by the perimeter of the triangle, also known as the three sides of the triangle, is referred to as the area of the triangle.

The space that is encompassed by all three of a triangle's sides is referred to as the triangle's area.

It is computed with the assistance of a variety of formulae that differ according to the kind of triangle, and the results are represented in square units such as centimeters squared, inches squared, and so on.

Generally, the equation for Area the is mathematically given as

A = 1/2 * base * height

Therefore

A= 1/2 * 8 * 5.2

A=20.8cm

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2652 blue macaws are there if 2,730 red macaws are living in Brazil.

A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0.

Given that the ratio between blue macaws and red macaws that live in Brazil is 272 : 208

We need to find the number of  blue macaws are there if 2,730 red macaws are living in Brazil.

Let x be the number of  blue macaws for 2,730 red macaws are living in Brazil.

Let us form a proportional equation

272/208=x/2730

Apply cross multiplication

272×2730=208x

742560=208x

Divide both sides by 208

2652=x

Hence, 2652 blue macaws are there if 2,730 red macaws are living in Brazil.

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If the sample size is small and the sample variance is large then

small treatment effect still be statistically significant.

As we know that,

Statustical significance refers to claim that a result from data generated by testing or experimentation is likely to be attributable to specific cause.

Sample size is the total number of individuals or items that comprise a sample.

And, the variance is a descriptive statistic, which falls under the category of a measure of spread.

The circumstance in which a very small treatment effect can be found to be significant is best described by option A: If the sample size big and the sample variance is small.

A large sample size will increase the probability that the results of a statistical test will yield significant results. This is why most statistical tests are accompanied by a measure of effect size. A statistically significant result associated with a very large sample size, will likely have a small effect size, an undesirable result for a researcher, as it implies one of the only reasons significant results were obtained was due to the large sample, not necessary the magnitude of the experimental effect.

Likewise, if variance is small, this will also increase the probability that the results of a statistical test will yield significant results. Variance is simply another word in statistics for the error. A decrease in error will lead to an increased probability of obtaining significant results, hence the idea that a small amount of variance will lead to an increased probability of significant results.

Hence, if the sample size is small and the sample variance is large then

small treatment effect still be statistically significant.

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