What numbers multiply to 10 and add up to -10

Answer:

I am assuming the 8:15 was a typo and was actually supposed to be a 8:14. Anyways, they are equivalent because they all make 4:7 when simplified.

Step-by-step explanation:

4:7 = itself at this point, as they don't have numbers that can simplify each other on both sides, unless you are looking for a decimal answer.

8:14 = 4:7 <- You can divide the 8 and 14 by two. 8 divided by 2 is four, and 14 divided by 2 is 7.

16:28 = 4:7 <- You can divide the 16 and the 28 by four. 16 divided by 4 is 4, and 28 divided by 4 is 7.

20:35 = 4:7 <- You can divide both sides by 5. 20 divided by 5 is 4, and 35 divided by 5 is 7.

Answer:

2.85714285714

Step-by-step explanation:

6x2 –14x ≥ –4

36 -14x ≥ -4

-14x ≥ -36-4

-14x ≥ -40

x ≥ -40/14

x \(\leq\) 2.85714285714

A

Step-by-step explanation:

did math

Answer:

m<5 = 133°

m<8 = 47°

Step-by-step explanation:

if <2 = 47°, and <5 is supplementary to <2, that means that together they both have to equal 180°. So, to get the measure of <5, you need to do 180 - 47 to get <5 = 133°.

Now, <5 (133°) is supplementary to <8, so they both have to equal 180° together. So, you must do 180 - 133 to get <8 = 47°. Or, another way to get <8 is to notice that <2 and <8 are alternate interior angles, which means they equal the same amount. So if <2 = 47°, then so does <8.

Three "real-world" variables for which you expect a marginal association between X and Y but conditional independence controlling for Z are:

- X = Hours spent studying
- Y = Grades in school
- Z = Intelligence

In this scenario, there is a marginal association between the hours spent studying (X) and the grades in school (Y), as it is expected that the more time a student spends studying, the better their grades will be.

However, when controlling for intelligence (Z), the association between X and Y becomes conditional independence, as intelligence can also affect grades in school.

In other words, the relationship between X and Y is no longer significant when controlling for Z.

For more such questions on Variables.

https://brainly.com/question/17344045#

#SPJ11

Answer:

A) x(x-1)(x+1)

Step-by-step explanation:

In the second term on the LHS, the denominator \(x^2-1=(x-1)(x+1)\), and \(x-1\) is contained in the first term. Therefore, the least common denominator would be \(x(x-1)(x+1)\).

Answer:

A half-filled container will weight 160 oz

Step-by-step explanation:

Weight of container with fruit punch = 275 oz

weight of container excluding fruit punch = 45 oz

Weight of fruit punch = Weight of container with fruit punch - weight of container excluding fruit punch   =  275 oz -  45 oz  =  230 oz

Thus, when container is full, it contains 230 oz.

When container will be half full, it will contain half of 230 oz

half of 230 oz = 1/2 * 230 oz = 115 oz

Thus,

a half-filled container will weight = weight of container + half of the capacity of container(115 oz) = (45 + 115) oz = 160 oz.

Thus,  a half-filled container will weight 160 oz.

The formula for determining the z score is expressed as

z = (data value - mean)/standard deviation

a) data value = 110

mean = 87

standard deviation = 11

z = (110 - 87)/11

z = 2.09

b) data value = 110

mean = 80

standard deviation = 11

z = (80 - 87)/11

z = - 0.64

The derivative of f(x) = arccos(x^2) is: f'(x) = -2x / √(1-x^4)

The derivative of f(x) = arccos(x^2), we'll use the chain rule. The chain rule states that the derivative of a composite function is the derivative of the outer function times the derivative of the inner function. In this case, the outer function is arccos(u) and the inner function is u = x^2.

First, let's find the derivative of the outer function, arccos(u). The derivative of arccos(u) is -1/√(1-u^2). Next, we'll find the derivative of the inner function, x^2. The derivative of x^2 is 2x.

Now we'll apply the chain rule. We have:

f'(x) = (derivative of outer function) * (derivative of inner function)

f'(x) = (-1/√(1-u^2)) * (2x)

Since u = x^2, we'll substitute that back into our equation:

f'(x) = (-1/√(1-x^4)) * (2x)

So, the derivative of f(x) = arccos(x^2) is:

f'(x) = -2x / √(1-x^4)

To learn more about Derivative :

https://brainly.com/question/23819325

#SPJ11

Answer:

Step-by-step explanation:

Sorry I can't explain how it is done. It is very difficult to explain on paper.

The total number of points earned for completing x surveys is 10x.

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

Points earned for each survey = 10

Now,

The total number of points earned for x survey.

= 10x

Thus,

The total number of points earned for completing x surveys is 10x.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ9

The exponential function represented on the graph is f(x) = (1/3)\(.^x\). The correct option is B.

The mathematical expression f(x)=exp or e^x denotes the exponential function. The word, unless specifically stated differently, normally refers to the positive-valued function of a real variable, though it can be extended to complex numbers or adapted to other mathematical objects like matrices or Lie algebras.

A graph is the representation of the data on the vertical and horizontal coordinates so we can see the trend of the data.

The given graph is representing the exponential function f(x) = (1/3)\(.^x\) The graph is attached with the answer below. The graph is showing the inverse fraction of ( 1/3).

Therefore, the exponential function represented on the graph is f(x) = (1/3)\(.^x\). The correct option is B.

To know more about exponential functions follow

https://brainly.com/question/2456547

#SPJ2

Therefore, the probability that the light will not be green when you arrive is approximately 0.5333 or 53.33%.

Total time for one complete cycle = green time + yellow time + red time

= 28 seconds + 5 seconds + 27 seconds

= 60 seconds

The probability that the light will not be green when you arrive can be calculated by dividing the time for which the light is not green (yellow + red) by the total time for one complete cycle.

Probability = (yellow time + red time) / total time for one complete cycle

= (5 seconds + 27 seconds) / 60 seconds

= 32 seconds / 60 seconds

≈ 0.5333 (rounded to four decimal places)

Therefore, the probability that the light will not be green when you arrive is approximately 0.5333 or 53.33%.

Learn more about probability here:

https://brainly.com/question/31828911

#SPJ11

The estimated current total cost for the installed and insulated tank is $12,065.73.

The first step is to calculate the surface area of the tank. The surface area of a cylinder is calculated as follows:

surface_area = 2 * pi * r * h + 2 * pi * r^2

where:

r is the radius of the cylinder

h is the height of the cylinder

In this case, the radius of the cylinder is 1 meter (half of the diameter) and the height of the cylinder is 1 meter. So the surface area of the tank is:

surface_area = 2 * pi * 1 * 1 + 2 * pi * 1^2 = 6.283185307179586

The insulation will add a thickness of 0.05 meters to the surface area of the tank, so the total surface area of the insulated tank is:

surface_area = 6.283185307179586 + 2 * pi * 1 * 0.05 = 6.806032934459293

The cost of the insulation is $40 per square meter and the cost of labor is $95 per square meter, so the total cost of the insulation and labor is:

cost = 6.806032934459293 * (40 + 95) = $1,165.73

The original cost of the tank was $10,900, so the total cost of the insulated tank is:

cost = 10900 + 1165.73 = $12,065.73

Therefore, the estimated current total cost for the installed and insulated tank is $12,065.73.

Learn more about cylinder current total cost https://brainly.com/question/25109150

#SPJ11

Let's factor out first. 2(-5x+4)+4x-5 = -10x+8+4x-5. If we combine like terms, -10x+8+4x-5 is -6x+3. Now our equation looks like this:

-6x+3 = -3.

If we move over the 3 on the left to the right side, we have -6x = -6. Divide both sides by -6, and we get our answer.

x = 1

Hope this helped!

Answer: 3

Step-by-step explanation: just do 15+13+10 which is 38 And then subtract 35 from 38 which gives you your answer 3

Answer:

\({ \tt{7.1 \times {10}^{ - 3} }} \\ { \bf{negative \: means \: { \green{increase \: in \: decimal \: places}}}} \\ = { \tt{0.71 \times {10}^{ - 2} }} \\ = { \tt{0.071 \times {10}^{ - 1} }} \\ = { \tt{0.0071 \times {10}^{0} }} \\ { \boxed{ but \: {10}^{0} = 1}} \\ \therefore{ \tt{ = 0.0071 \times 1 = 0.0071}}\)

Answer:

Step-by-step explanation:

The following statements are true:

mabd + mdbc = 180 degrees

mabd = mevc

According to the definition of linear pairs, the two angles add up to 180 degrees. Therefore, mabd + mdbc = 180 degrees.

According to the definition of vertical angles, they have the same measure. Therefore, mabd = mevc.

Since abd and evc are vertical angles, and mabd = mevc, then mabd = mebc. Therefore, we can substitute mabd in the equation mebc = y+135/2 to get 5(2x + 1) = y+135/2.

We can solve for y to get y = 10x + 260.

Now we can substitute this value of y into the equation mebc = y+135/2 to get mebc = 10x + 347.5.

Therefore, none of the statements in the question that mention mebc are necessarily true or false, since we don't have enough information about the value of x to determine its measure.

Learn more about vertical angles

brainly.com/question/24460838

#SPJ11

Answer:

the answer is a octagon that has rotation of 45degrees

Based on the results of the regression analysis, the estimate of electricity costs in a month with 1,800 machine hours would be $17,695.32

The regression coefficients are also important in determining the relationship between the variables. In this case, the intercept is 6,967.32 and the coefficient for machine hours is 5.76.

This means that the estimated cost of electricity per month is $6,967.32 when there are zero machine hours. For each additional machine hour, the estimated cost of electricity increases by $5.76.

To estimate the cost of electricity in a month with 1,800 machine hours, we can use the regression equation:

Electricity cost = intercept + (coefficient x machine hours)

Plugging in the values, we get:

Electricity cost = 6,967.32 + (5.76 x 1,800)

Electricity cost = $17,695.32 (rounded to the nearest whole dollar).

To know more about regression here

https://brainly.com/question/14184702

#SPJ4

1. 5*20= 100

2.3.18309886184

3.6.36619772368

4.20

5.The choice of a circular table or a rectangular table depends on a variety of factors such as the intended use, available space, and personal preferences. However, there are some advantages to using a circular table over a rectangular one:

More inclusive: A circular table allows for more inclusive conversations since everyone can see and hear each other. There is no "head" of the table, which can make some people feel excluded.

Easier to navigate: A circular table allows for easier navigation around the table. There are no corners to bump into, and people can move around the table more freely.

Better for small spaces: A circular table can be more efficient for small spaces since it takes up less floor space than a rectangular table with the same seating capacity.

Aesthetically pleasing: A circular table can be aesthetically pleasing and can add a touch of elegance to a room. It can also create a more intimate and cozy atmosphere.

However, a rectangular table can also have advantages. It can be more practical for certain activities such as working on projects or serving food. It may also be easier to fit into a particular space or room layout. Ultimately, the choice of table shape depends on the specific needs and preferences of the user.

Answer: 43.778

Step-by-step explanation: i am guessing thats the answer

You have the following points:

(7,r)

(1,-1)

and you have to find the value of r, that makes that the line which crosses the previous points has a slope of m = 1/2.

To find the value of r, you use the following formula for the slope m:

m = (y2 - y1)/(x2 - x1)

where (x1,y1) and (x2,y2) are two point of the line.

The points are:

(x1,y1) => (1,-1)

(x2,y2) => (7,r)

replace the previous values in the formula for the slope m, and solve for r:

m = (r - (-1))/(7 - 1)

m = (r + 1)/(6) multiply both sides by 6

6m = r + 1 subtract both sides by 1

6m - 1 = r replace the value of m = 1/2

6(1/2) - 1 = r

3 - 1 = r

2 = r

Hence, the value of r has to be r = 2 for getting a slope of m = 1/2 of a line which crosses the given points

Cobb's arguments about p-value is about the uncertainty of data that p-value represents. It doesn't signify truth and must be comprehended in the setting of other variables.

A p-value of 0.05 specifies that the possibility of observing the result by chance is 5%, but the other aspect of that is that it also shows that there is a 95% probability of obtaining a result that is not due to chance.

Cobb argues that other variables such as multiple testing, confounding variables, or sampling variability can affect the p-value's precision. The p-value is considered invalid in the presence of any

or sampling variability, as it may mislead the results. A p-value is also vulnerable to multiple testing, which is when numerous evaluations are done on the same data. When performing multiple testing, a more conservative p-value is required to regulate for the risk of an accidental Type I error.

Cobb's argument emphasizes that while the p-value is essential for hypothesis testing, it should not be the sole determinant of data's validity. Researchers must consider other sources of variability when interpreting p-values to determine if they support or refute a hypothesis.

Hence, p-value alone should not be considered conclusive, and one must consider other sources of data to make decisions.

Learn more about p-value here:

https://brainly.com/question/30078820

#SPJ11

C) 2x+y=10 is the line has an X intercept of 5 and Y intercept of 10

To find the eqaution of line whose X intercept and Y intercept is given we will use line intercept form of line

The equation of line with A units of X intercept and  B units of

Y intersect is given by:

  \(\frac{x}{A} + \frac{y}{B} =1\)   ----(i)

 given that A= 5 (X intercept) and B= 10 (Y intercept)

 so equation (i) reduces to

  \(\frac{x}{5}+\frac{y}{10} =1\)

so 2x + y = 1*10

so the equation of the line is 2x+y=10

To know more about equation of line click on below link:

https://brainly.com/question/21511618#

#SPJ4

Complete question:

Which equation has an X intercept of 5 and a Y intercept of 10?

A) 3x+2y=10

B) 5x+7y=2

C) 2x+y=10

D) 11x+7y=9

The estimated value of the explanatory variable is not statistically significant at the 5%-level if a. the t-statistic is greater than 2.5.

The t-test is a hypothesis testing technique used to decide whether the estimated coefficient of a linear regression model is statistically significant or not. The t-value is used to measure the size of the difference between the estimated coefficient and the hypothesized value. When the t-value exceeds a critical value, such as 2.5, the estimated value of the explanatory variable is not significant at the 5%-level. It implies that the null hypothesis, which assumes that the explanatory variable's coefficient is zero, cannot be rejected.

The p-value is a measure of the probability of obtaining a more extreme value of the test statistic than the observed value if the null hypothesis is true. A small p-value implies that the null hypothesis should be rejected. When the p-value is less than 0.05, it means that the estimated value of the explanatory variable is significant at the 5%-level.

The confidence interval is a range of values that is expected to include the true value of the population parameter with a specified level of confidence. A 95% confidence interval means that the true value of the population parameter lies within the range 95% of the time. The 95% confidence interval does not contain zero implies that the estimated value of the explanatory variable is statistically significant at the 5%-level since it suggests that the population parameter is different from zero at the 5%-level. Conversely, if the 95% confidence interval contains zero, the estimated value of the explanatory variable is not statistically significant at the 5%-level since it means that the population parameter is not different from zero at the 5%-level. Therefore, it is essential to examine the t-statistic, p-value, and confidence interval while conducting hypothesis testing to make an informed decision.

To leran more about hypothesis testing, refer:-

https://brainly.com/question/17099835

#SPJ11

Answer:

B I think

Step-by-step explanation:

We have defined the criteria for SAS congruency of triangles.

What is SAS?

The SAS theorem states that "Triangles are congruent if two sides and the included angle of one triangle are equal to two sides and the included angle of another triangle."

According to the SAS criteria for triangle similarity, two sides of one triangle are similar to two sides of another triangle if their included angles are congruent.

Hence, we have defined the criteria for SAS congruency of triangles.

To learn more about the SAS congruency of triangles, visit:

brainly.com/question/13408604

#SPJ4