PLEASE HELP
5.
If t= -3, then 3t^2 +5t +6 equals
A. -36
B. -6
c. 6
D. 18

Answer:

x=21

Step-by-step explanation:

Answer:

  see attached

Step-by-step explanation:

You want a graph of the equation y = -5x +2.

The y-intercept is the point where the line crosses the y-axis. It is the value of y when x=0. In the equation, the y-intercept is the constant: +2.

The slope of the line is the coefficient of x. It is the ratio of "rise" to "run." The equation tells you the slope is -5. This means the line drops 5 units for each unit to the right.

Another point on the line will be (0, 2) +(1, -5) = (1, -3).

The line can be drawn through these points: (0, 2) and (1, -3).

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A significance level of 0.10, we have enough evidence to conclude that the new copy machines have a significantly faster mean repair time compared to the older model.

To test if the new copy machines are faster to repair, we can set up the following null and alternative hypotheses:

Null Hypothesis (H₀): The mean repair time for the new copy machines is the same as the mean repair time for the older model.

Alternative Hypothesis (H₁): The mean repair time for the new copy machines is less than the mean repair time for the older model.

Let's perform a one-sample t-test to test these hypotheses. The test statistic is calculated as:

t = (sample mean - population mean) / (sample standard deviation / √(sample size))

Given:

Population mean (μ) = 93 minutes

Sample mean (\(\bar x\)) = 86.8 minutes

Sample standard deviation (s) = 14.6 minutes

Sample size (n) = 18

Significance level (α) = 0.10

Calculating the test statistic:

t = (86.8 - 93) / (14.6 / sqrt(18))

t = -6.2 / (14.6 / 4.24264)

t ≈ -2.677

The degrees of freedom for this test is n - 1 = 18 - 1 = 17.

Now, we need to determine the critical value for the t-distribution with 17 degrees of freedom and a one-tailed test at a significance level of 0.10. Consulting a t-table or using statistical software, the critical value is approximately -1.333.

Since the test statistic (t = -2.677) is less than the critical value (-1.333), we reject the null hypothesis.

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Answer:

2

Step-by-step explanation:

I just need for the points

Answer:

25/8

Step-by-step explanation:

Given That:

R = 8x+4y

X= 8

R = 30.

So, 8 x 8 +4y = 30

Simplify, Rearrange and solve.

64 + 4y = 30

4y = 30/64 = 15/32

y = 15/32 divided by 4

y = 15 / 32 x 1/4

y = 15/(32 x 4) = 15/128

hope this helps

Answer:

D. The money that Kai started with before he mowed any lawns.

Step-by-step explanation:

We Know

The equation is y = mx + b

The x represents the number of lawns that Kai mows.

What does the y-intercept represent in this equation?

The y-intercept is when the x = 0, meaning the y-intercept is the amount of money he has when mowing 0 lawn. So, the answer is D.

Answer:

The Answer is D

Step-by-step explanation:

The Hypothesis testing enables us to determine whether the sample evidence is inconsistent  with what is hypothesized under the null hypothesis.

According to the statement

we have to find that the the given sample is applicable for the null hypothesis or not.

So, For this purpose, we know that the

Inconsistent hypothesis is a the estimate needs to correspond with a small p value for all values in the hypothesized set of values.

So, under this hypothesis we find that the given data or sample is inconsistent under the null hypothesis. it means that the the data give the correct value of the p rather than wrong value of p under null hypothesis.

That's why, Hypothesis testing enables us to determine whether the sample evidence is inconsistent  with what is hypothesized under the null hypothesis.

So, The Hypothesis testing enables us to determine whether the sample evidence is inconsistent  with what is hypothesized under the null hypothesis.

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Answer:(3,1)

Step-by-step explanation:

Because you cant have (1,3) and (3,1).

Answer:

(2,3)

or (2,2) if the function does not need to be continuous.

Step-by-step explanation:

For a set of points to be considered a function, it must be true that for every X value, you have only a single Y value solution.

In other words, looking through your points listed, you would remove any point where an X value appears twice with different Y values.

\((X,Y)\\(-1,0)\\(1,3)\\(2,2) < -\\(2,3) < -\\(3,1)\\\\\)

Notice the two points with arrows, both have 2 as their X value, but different Y values. Removing either one of them would make this a function. Although, by removing (2,3) the function has the potential to also be continuous, because having two of the same Y value for different X values would cause a piece-wise function which is generally non-continuous.

Answer:

360 in

Step-by-step explanation:

To figure out how many inches the dressmaker has in 10, 3 ft rolls, we can multiply by the conversion ratio:

\(\dfrac{12 \text{ in}}{1\text{ ft}} \\ \\ \text{} \ \ \implies (10 \cdot 3 \text{ ft}) \cdot \dfrac{12 \text{ in}}{1\text{ ft}} \\ \\ \text{} \ \ \implies 30 \text{ ft} \cdot \dfrac{12 \text{ in}}{1\text{ ft}} \\ \\ \text{} \ \ \implies 30\cdot 12 \text{ in} \\ \\ \text{} \ \ \implies \boxed{360 \text{ in}}\)

So, the dressmaker has 360 in of ribbon.

When parking next to a curb, you may not park more than 12 inches away from the curb.

Curb parking refers to the practice of parking a car alongside the road, adjacent to the curb. It is a common method of parking in urban areas where designated parking spaces may be limited. When parking parallel to the road, vehicles are positioned with either the front or back bumper facing the direction of the road.

To ensure safe and efficient use of road space, there are regulations in place regarding curb parking. One important regulation is the requirement to park within a certain distance from the curb. In general, vehicles are not allowed to park more than 12 inches away from the curb.

The purpose of this regulation is to maintain an organized and orderly parking arrangement, allowing for the smooth flow of traffic and the safe passage of pedestrians. By parking close to the curb, vehicles minimize obstruction to other vehicles and ensure that the road remains clear for traffic.

It is essential for drivers to adhere to these parking regulations to avoid fines or penalties and to contribute to the overall safety and functionality of the road.

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a) Given that the probability that the counter is red is 60% and the probability that the removed counter is blue is 30%, it means that there are other colored counters in the bag since the probabilities of the two colors do not equal to 100%.

b) Based on the above, we can say that there is a probability of 10% that the removed counter is green, based on the assumption that there are only three colored counters in the bag.

Probability is the possibility that an expected outcome results when there are many possible outcomes.

Probability values lie between 0 and 1, depending on the level of certainty.

The probability that the removed counter is red = 60%

The likelihood that the removed counter is blue = 30%

Sum of the above probabilities = 90% (60% + 30%)

Probability of have another colored counter (for example, green) = 10% (100% - 90%)

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Answer:

anything to the power of 0 is always going to be 1 so the problem isnt as hard as it seems. so 1 million to the power of 0 will still be 1. so instead of the problem being 10,324 to the power of 0 by 8,576 to the power of 0 its really 1 x 1.

Step-by-step explanation:

Answer:

1

Step-by-step explanation:

If you have a number with the exponent 0, then you should know that the exponent 0 always means 1. So, 10,324^0 is 1 and 8,576^0 is also 1.

Now, you have 1 times 1.  

1 times 1 = 1

So, the answer is 1.

Answer:

8??????

Step-by-step explanation:

Answer:

18 scarves

Step-by-step explanation:

12 ÷ 2/3 = 12 · 3/2 = 18

The perimeter of the rhombus is 52 units.

A rhombus is a quadrilateral with equal sides in Euclidean plane geometry. A quadrilateral with equal-length sides is also referred to as a "equilateral triangle". A parallelogram has a different shape called a rhombus. A rhombus has equal and parallel opposing sides and angles. A rhombus has equal-length sides and a right angle that divides its diagonal in half.

Let's denote the diagonals of the rhombus as d₁ and d₂, and let's denote its side length as s. The area of the rhombus is given by the formula:

A = (d₁ x d₂) / 2

Since the area is given as 120 square units and one diagonal is 10 units, we can substitute these values into the formula and solve for the other diagonal:

120 = (10 x d₂) / 2

240 = 10 x d₂

d₂ = 24 units

Now we can use the Pythagorean theorem to find the length of the sides of the rhombus:

s = √[(d₁/2)² + (d₂/2)²]

s = √[(10/2)² + (24/2)²]

s = √[25 + 144]

s = 13 units

Since a rhombus has four congruent sides, the perimeter of the rhombus is:

P = 4s = 4 x 13 = 52 units

Therefore, the perimeter of the rhombus is 52 units.

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Given:

The inequality is:

Find-:

Solve the inequality

Explanation-:

Use log property is:

So the value is:

So, the answer is :

The binomial probability distribution is used to describe the probability of a specific number of successes in a series of independent events. It is used for discrete random variables.

The probability of a particular number of successes in a given number of trials can be calculated using the formula P(x) = (n choose x) * p^x * (1-p)^(n-x). Here, “n choose x” refers to the binomial coefficient, which is the number of ways of selecting x successes out of n trials.

The binomial probability distribution is a discrete distribution since each trial has two possible outcomes, success or failure. It is defined by two parameters: the probability of success, p, and the number of trials, n.

Other options are:

Therefore, the binomial probability distribution is used with a discrete random variable.

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Answer:(12,-7)

Step-by-step explanation:

Answer:

Step-by-step explanation:

Find the value of s on one side of the equation to isolate it.

1.1=s+2.3/3

First, switch sides.

\(\sf{\dfrac{s+2.3}{3}=1.1}\)

Multiply by 3 from both sides.

\(\sf{\dfrac{3\left(s+2.3\right)}{3}=1.1* \:3}\)

Solve.

1.1*3=3.3

s+2.3=3.3

Then, subtract by 2.3 from both sides.

s+2.3-2.3=3.3-2.3

Solve.

Subtract.

3.3-2.3=1.0=1

s=1

Therefore, the final answer is s=1.

I hope this helps, let me know if you have any questions.

Answer:

y= *greater than or equal to sign* 2500x+17500

The answer is: A

Step-by-step explanation:

Hope this help   :)

Answer:

It's C

Step-by-step explanation:

I put in A for my exam but it said it was incorrect and it said the answer was C :')

Answer:

4

Step-by-step explanation:

Answer:

B 3.5

Step-by-step explanation:

Hope it Helps!

The answer of 2 + 2 = 4.

Addition is one of the basic mathematical operations where two or more numbers is added to get a bigger number.

The process of doing addition is also called as finding the sum.

The given addition problem is 2 + 2.

We have to add the two numbers.

We know that addition is the method of counting the numbers.

2 + 2 means that 2 is added to 2.

When 2 is added to 2, we get 4.

Hence the answer to 2 + 2 is equal to 4.

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An introduction to economics course is offered in 3 sections each with different instructor. The average grades given by the instructors were compared to determine if there is a significant difference. We can use analysis of variance (ANOVA) The significance level for the hypothesis test is 0.01.

We compare the means of multiple groups. ANOVA determines if there is a significant difference among the means by analyzing the variation within and between the groups.

Let's denote the average grades for the three sections as X₁, X₂, and X₃. Our null hypothesis (H₀) is that there is no significant difference among the means, while the alternative hypothesis (H₁) is that there is a significant difference. Mathematically, we can state the hypotheses as follows:

H₀: X₁ = X₂ = X₃

H₁: At least one of the means is different

To perform the hypothesis test, we calculate the F-statistic, which is the ratio of between-group variation to within-group variation. If the calculated F-value is greater than the critical F-value, we reject the null hypothesis in favor of the alternative hypothesis.

Using statistical software or a calculator, we can calculate the F-value and compare it to the critical F-value with degrees of freedom based on the number of groups and sample sizes.

If the calculated F-value is greater than the critical F-value, we can conclude that there is a significant difference in the average grades given by the instructors.

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Solution:

The number of enrollment in southern maine campus is

The total amount to be shared by 7 campuses is

Concept:

To calculate the amount of money to be received by southern main campus, we will use the formula below

The total number of students will be calculated below as

Hence,

By substituting the values, we will have

Hence,

The amount southern maine receives based on enrollment will be = $ 119,344,870.20

The median of the given list of numbers is 87.

To find the median of a list of numbers, we arrange them in ascending order and identify the middle value.

If there is an odd number of values, the median is the middle number. If there is an even number of values, the median is the average of the two middle numbers.

First, let's arrange the numbers in ascending order:

65.9, 68, 70, 74, 75, 78, 84, 86, 87, 90, 93, 93, 95, 96, 97, 380, 486, 680

There are 17 numbers in the list, which is an odd number. The middle number is the 9th number in the list, which is 87.

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The time taken for the cargo to hit the ground will be 0.6 seconds and it travels in the horizontal direction for around 14.69 feet.

The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign. The point-slope form, standard form, and slope-intercept form are the three main types of linear equations. The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.

Here,

The calculations are attached in images.

To calculate t we will use that is y because at the moment of cargo will have a height 0, so we get,

= −4.9t² +1.75

-1.75=-4.9t²

t²=-1.75/-4.9

t²=√0.3571

=0.6 seconds

Now we will calculate x, then y = 0

because since the cargo will be on the ground it will no have height, so

0= -0.0081x²+1.75

-1.75 =-0.0081x²

x²=-1.75/-0.0081

x= √216.04 = 14.69 feet

It will take the cargo 0.6 seconds to hit the ground, and it will travel 14.69 feet in a horizontal direction.

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Answer:

to answer this question i need to know what and what x together to get the area

Step-by-step explanation

The blue line represents rise and red line run.

The slope of the line is 3/7.

Given,

The graph.

The rise and the run are terms used to describe changes in height between two points. Rise divided by Run is what determines the slope: slope =rise/  run . By examining the rise and run, you can infer the slope of a line from its graph.

We have to find the line representing rise and the line representing run of the line. And also slope of the line.

Here,

Blue line in 3 grids represents rise.

Red line in 7 grids represents run.

Now,

Slope of the line = rise / run

Slope of the line = 3/7.

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