BRAINLIEST!!! easy question

\(0,2a^{2}b^3 . (-5a^3b)^2 = 0,2a^{2}b^3 . 25a^6b^2 = 5a^8 b^5\)

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The significance of the slope in regression can be determined by conducting a hypothesis test

The slope of the regression line in a regression analysis shows how  dependent variable changes as the independent variable increases by a unit. A hypothesis test on a slope coefficient, commonly referred to as the beta coefficient or the regression coefficient, can be used to ascertain the significance of the slope. The slope coefficient is compared to a null hypothesis value of zero in the hypothesis test.

The null hypothesis is rejected and it is determined that there is a significant association between the independent and dependent variables if the p-value for the slope coefficient is less than the significance threshold. Therefore, slope is not equal to zero and there is an association amongst changes in the independent variable and those in the dependent variable.

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Step-by-step explanation:

1. square root of 32.

\( \sqrt{32 \\ } \\ = \sqrt{2} \times \sqrt{16} \\ = \sqrt{2} \times ( \sqrt{4} \times \sqrt{4} ) \\ = \sqrt{2} \times \sqrt{4} \\ = \sqrt[2]{4} \\ = 2\)

2. Square root of 6

\( \sqrt{6} \\ = \sqrt{2} \times \sqrt{3} \\ = \sqrt[2]{3 \\ } \\ = 1.5\)

3. Square root of 2

\( \sqrt{2} \\ = \sqrt{1} \times \sqrt{1} \\ = \sqrt[1]{1} \\ = 1\)

Answer:

7 beads

Step-by-step explanation:

First you need to divide the amount of beads she has by the amount of bracelets she wants to make. 60/8=7.5. Because you cannot have half beads, you need to round down.

Answer:

7 beads will be on each bracelet.

Step-by-step explanation:

60/8 is 7.5

7.5 simplified is 7

MARK BRAINLIEST PLEASE ;-;

The option B is a correct option which is y = 26x and y = -0.030(x-500)2 15,900 represent the quadratic and linear function.

According to the statement

we have given that Vertex

(h,k) = (500, 15900)

And One of the points on the graph

(x,y) = (0,8400)

FIRST PART: we have to find the quadratic function

We can find the quadratic function by parabola's equation formula

y = a (x - h)² + k  -(1)

Input the numbers to the formula, to find the value of a

y = a (x - h)² + k

8400 = a(0 - 500)² + 15900

8400 = a (500)² + 15900

8400 = 250000a + 15900

-250000a = 15900 - 8400

-250000a = 7500

a = 7500/-250000

a = 0.03

Now,

Submit a to the formula (1)

y = a (x - h)² + k

y = 0.03 (x - 500)² + 15900

this is the quadratic equation.

SECOND PART: Find the linear function

the total cost = cost each helmet × the number of helmet

y = 26x

So,

The option B is a correct option which is y = 26x and y = -0.030(x-500)2 15,900 represent the quadratic and linear function.

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Question: A company plans to sell bicycle helmets for $26 each. The company's business manager estimates that the cost, y, of making x helmets is a quadratic function with a y-intercept of 8,400 and a vertex of (500, 15900)

x= number of helmets

y = amount in dollars

Which system models this situation?

a) y = 26x and y = 8,400(x-500)2+15,900

b) y = 26x and y = -0.030(x-500)2+15,900

c) y = x/26 and y = -0.030(x-500)2+15,900

d) y = x/26 and y =8,400(x-500)2+15,900

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Answer:

B. y = 26x and y = -0.030(x-500)2+15,900

Step-by-step explanation:

Answer:

A reflection over a given line leaves the distance between each point and the line invariant.

Some basic rules are:

for a point (x, y)

- a reflection over x = 0, leaves our point as (-x, y)

- a reflection over y = 0, leaves our point as (x, -y)

Now, in the image, we can see that in one triangle the base faces down, and in the other the base faces up. Then we must start with a reflection over the line y= 0.

And now our triangle will be in the fourth quadrant, and triangle B is in the 3rd quadrant, then we need to do a reflection over the line x = 0.

(is the same as doing first a reflection over the line x= 0 and then other over the line y = 0)

Now, triangle A is in quadrant 1 and triangle B is in quadrant 3, so we can do a reflection over a line that divides those quadrants, that line is y = -x.

Then the correct options are:

A reflection over the line y = -x

A reflection over the line x = 0 followed by a reflection over the line y = 0

The momentum magnitude observed in frame s' is √(15m^2c^4).

In special relativity, the relationship between energy (E) and momentum (p) is given by the equation:

E^2 = (pc)^2 + (mc^2)^2

where m is the rest mass of the particle, c is the speed of light, and p is the momentum of the particle.

In frame of reference s, the energy of the electron is given as 4mc^2. Plugging this into the equation, we have:

(4mc^2)^2 = (pc)^2 + (mc^2)^2

Simplifying this equation, we get:

16m^2c^4 = p^2c^2 + m^2c^4

Canceling out the common terms, we have:

15m^2c^4 = p^2c^2

Taking the square root of both sides, we get:

pc = √(15m^2c^4)

The momentum magnitude observed in frame s', denoted as p', is related to the momentum in frame s (p) by the relativistic velocity addition formula:

p' = γ(p - βE/c)

where γ is the Lorentz factor and β is the velocity of frame s' relative to frame s. Since the electron is moving along the x-axis, the velocity β is zero, and the Lorentz factor γ is equal to 1.

Therefore, the momentum magnitude observed in frame s' is the same as the momentum magnitude in frame s:

p' = p

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Answer:

Probability of blue or red = 3/10

Step-by-step explanation:

4 are black 10 are blue, 3 are red, 6 are green , 6 are blue and red and 1 .

Total = 30

Probability of having a blue = 6/30

Probability of having a blue= 1/5

Probability of a red = 3/30

Probability of a red= 1/10

Probability of a blue or a red=

Probability of blue + probability of red

= 6/30 + 3/30

= 9/30

= 3/10

The researcher is interested in testing the relationship between the amount of exercise and the symptoms of depression.

They gathered a sample of n = 102 participants and obtained a Pearson's correlation of r = -0.55.

The question now is whether this correlation is significant when using a two-tailed test with a = 0.01. Answer: c. No, this correlation is not significant.Inferential statistics is used to determine whether a relationship exists between two variables.

One of the most commonly used measures of the relationship between two variables is the correlation coefficient. In the case of the correlation coefficient, r ranges from -1 to +1, with -1 indicating a perfect negative correlation, +1 indicating a perfect positive correlation, and 0 indicating no correlation at all.

A correlation coefficient of -0.55 means that there is a negative correlation between the two variables.

In other words, as one variable increases, the other variable decreases, and vice versa.

The two-tailed test is used to test whether there is a significant relationship between the two variables, i.e., whether the correlation coefficient is significantly different from 0.01. The test involves comparing the obtained correlation coefficient to a critical value obtained from a table or computer program.

If the obtained correlation coefficient is greater than the critical value, then the relationship is significant.

If the obtained correlation coefficient is less than the critical value, then the relationship is not significant.

In this case, the correlation coefficient of -0.55 is less than the critical value for a two-tailed test with a = 0.01. Therefore, the relationship is not significant.

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The volume of the can is approximately 87.96 cubic inches.

- To find the volume of the can, we need to use the formula for the volume of a cylinder: V = πr²h, where r is the radius and h is the height of the cylinder.
- In this case, the radius is 2 inches and the height is 7 inches, so we can plug in those values and simplify:
V = π(2²)(7)
V = 4π(7)
V = 28π
- However, we need to round to the nearest hundredth, so we need to approximate π as 3.14 and use a calculator to multiply:
V ≈ 87.96 cubic inches

To find the volume of the can, we need to use the formula for the volume of a cylinder: V = πr²h, where r is the radius and h is the height of the cylinder. In this case, the can has a height of 7 inches and a radius of 2 inches, so we can plug in those values and simplify.

V = π(2²)(7)
V = 4π(7)
V = 28π

However, we need to round to the nearest hundredth, so we need to approximate π as 3.14 and use a calculator to multiply. This gives us:

V ≈ 87.96 cubic inches

Therefore, the volume of the can is approximately 87.96 cubic inches.

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The price $0.78 is less than $0.80.

A number system is defined as a system of writing to express numbers.

Given that $0.80 is the price of the apple which Mateo buys.

We need to check the option whose value is less than $0.80.

To do this we need to compare $0.80 with the given decimal numbers.

$0.78 is less than $0.80.

0.78<0.80

$0.85  is greater than $0.80.

0.85>0.8

$0.90 is greater than $0.80.

0.90>0.80

$1.25 is greater than $0.80.

1.25>0.80

Hence, the price which is less than $0.80 is $0.78.

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Answer:

The answer in slope intercept form is y = 5/2× -5

\(\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}\)

Actually Welcome to the concept of Geometric Mean (leg) theorem.

So according to the rule, we know that, here altitude = h and left side is 6 and right side is 14 , so we get as,

==> altitude/left = right/altitude

==> h/6 = 14/h

==> h^2 = 14*6

==> h^2 = 84

2.) so now we apply the Pythagoras theorem in triangle ∆DCB

so we get as,

==> (14)^2 + h^2 = a^2

==> 196 + 84 = a^2

==> 280 = a^2

==> a = √280

==> after simplified => a = √70*4

==> a = 2√70 units

hence the correct answer is a => 2√70 units.

B. x = 5

tip : if in a rush just plug in the number and see if its true

8x - 4 = 36

x = 5

The correct option for the difference is in an observational study, the researchers do not control treatment, and in an experiment, they do.

An experiment is a technique that is carried out to support or reject a hypothesis, or to test the efficacy or probability of something.

The basic difference between an observational study and an experiment:

Hence, the correct option for the difference is in an observational study, the researchers do not control treatment, and in an experiment, they do.

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Answer:

It's either 1:3 or 1:3

Step-by-step explanation:

A scale factor is times, calculate and, a reinduced PEMDAS

The student's score in standard units is 1.5. This means that the student's score is 1.5 standard deviations above the mean.

To find out the student's score in standard units, we can use the formula Z = (X - μ) / σ, where Z is the number of standard deviations from the mean, X is the student's score, μ is the mean, and σ is the standard deviation.

First, let's find the mean and standard deviation of the class's scores. The average score is 80 points, and the standard deviation is 8 points. Therefore,

μ = 80

and

σ = 8.

Next, let's find the student's score in standard units. The student got a 92 on the exam. Therefore,

X = 92.Z

= (X - μ) / σ

= (92 - 80) / 8

= 1.5

Therefore, the student's score in standard units is 1.5. This means that the student's score is 1.5 standard deviations above the mean.

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Answer:

s=  -5

Step-by-step explanation:

have a good day

Answer:

Step-by-step explanation:

subtract 28 on both sides that will cancel the 28

-35 = 7s, divide both sides by 7, this cancels the 7

- 5 = s

s=-5

Answer:

a. x = 9 + 4y

b. x = (7y-2)/6

c. x = (17 + k)/4

d. x = (9-c)/k

Step-by-step explanation:

In each of the equations, we want to make x the formula subject

a) 3x-12y = 27

3x = 27 + 12y

3x = 3(9 + 4y)

x = 9 + 4y

b) 6x-7y = -2

6x = 7y-2

x = (7y-2)/6

c) 4x - k = 17

4x = 17 + k

x = (17 + k)/4

d) kx + c = 9

kx = 9-c

x = (9-c)/k

Answer:

It's the top answer or A.

Step-by-step explanation:

Because if you have 6 avocados for 7.50 just divide without including the decimal point. 750 divided by 6 is 125

include the decimal point in between 1 and 2

boom 1.25

There would be approximately $174.97 more in the account with interest compounded semi-annually compared to the account with simple interest.

To compare the amount in an account with interest compounded semi-annually versus an account with simple interest, we can use the formulas for compound interest and simple interest.

For the account with interest compounded semi-annually:

Principal amount (P) = $3,600

Annual interest rate (r) = 5.2% = 0.052

Time (t) = 5 years

Number of compounding periods per year (n) = 2 (semi-annually)

The formula for compound interest is:

\(A = P(1 + r/n)^(n*t)\)

Using this formula, we can calculate the future value (A) of the account with compound interest:

A = $3,600 * (1 + 0.052/2)^(2*5)

A ≈ $4,554.97

For the account with simple interest, we use the formula:

A = P(1 + r*t)

Calculating the future value (A) of the account with simple interest:

A = $3,600 * (1 + 0.052*5)

A ≈ $4,380

The difference in the amounts between the two accounts is:

$4,554.97 - $4,380 ≈ $174.97

Therefore, there would be approximately $174.97 more in the account with interest compounded semi-annually compared to the account with simple interest.

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Given: The fence costs $1.50 per footTo find: The shortest possible length for a side of the flower bed.

Step 1: The perimeter of the triangle flower bed Perimeter of the triangular flower bed = AB + AC + BC ftAB = a ftAC = aftBC = (a + 4) ftPerimeter = a + aft + (a + 4)ft = 2a + 5ft

Step 2: The cost of the fence The cost of the fence = $1.50/foot × (Perimeter)

The compound inequality can be written as:60 ≤ $1.50/foot × (2a + 5ft) ≤ 75

Divide the whole inequality by 1.5.40 ≤ 2a + 5ft ≤ 50

Subtracting 5 from all sides:35 ≤ 2a ≤ 45Dividing by 2, we get:17.5 ≤ a ≤ 22.5

Therefore, the shortest possible length for a side of the flower bed is 17.5 feet.

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Answer:

Step-by-step explanation:

V= video game's price

.05V= .75

Now divide;

.75÷.05= 15= V

So the videogame equals $15, and let's check to see if we have the correct answer.

15 × .05= .75

The videogame equals $15.

To look from the guest to their left to the guest to their right at a round table seating 6 people, you need to rotate by 60 degrees.

For a regular polygon with n sides, the sum of its interior angles is given by ((n - 2) × 180) degrees. In the case of a round table seating 6 people, the table can be considered as a hexagon, which has 6 sides. Using the formula, we can calculate the sum of the interior angles:

((6 - 2) × 180) / 6 = (4 × 180) / 6 = 720 / 6 = 120 degrees

Since the table forms a complete circle, the sum of the interior angles is divided equally among the guests. Therefore, each guest sits at an angle of 120 degrees. To look from the guest to their left to the guest to their right, you need to rotate by the angle between adjacent guests, which is half of the angle they sit at:

120 / 2 = 60 degrees

Thus, to look from the guest to their left to the guest to their right at a round table seating 6 people, you need to rotate by 60 degrees.

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Answer: 55 degrees

Step-by-step explanation:

Angle sum of a triangle = 180 degrees

40+85= 125

180-125= 55

Answer:

360 miles

Step-by-step explanation:

to find the distance, multiply speed and time

120*3= 360

Can I have brainliest plz

Answer:

what table?

Step-by-step explanation:

The value of x in sequence of number is 10.

Here, first term of sequence is x and each term there after is twice the previous term. Also Fifth term is 160.

What is geometric series?

Geometric series is an infinite series of the form:

\(a+ar+a r^{2} +ar^{3} +..........\)

where r is known as common ratio.

Now, first term is x and each term there after is twice the previous term.

So the series will be;

x , 2x , 4x , 8x, ..........

Clearly this series is geometric series with common ratio 2.

And the nth term of geometric series is \(ar^{n-1}\)

⇒ fifth term is 160

\(ar^{5-1} = 160\\ar^{4} = 160\\a 2^{4} =160\\a=\frac{160}{16} \\a=10\)

Here, first term is x.

The value of x in sequence of number is 10.

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