Any help pls. Question is : Find the equation of line B, which is perpendicular toy-2x=-8(x-8)and passes through the point (6,-6). Find the midpoint of the line segment AB in the following figure

Answer:

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Given lines:

Plot both of the lines using the graphing calculator by adding the equations, then find the graphical solution as the intersection of the lines.

See attached.

The solution is (-1, 0).

Answer:

6 inches

Step-by-step explanation:

there are 12 inches in a foot

4 ft * 12 = 48 inches

48 - 42 = 6

Cut off 6 inches

Answer:

b. Conclude that the mean attendance differs since the p-value = 0.0134 < 0.05.

Step-by-step explanation:

Before testing, we need to understand the central limit theorem and subtraction of normal variables.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Subtraction between normal variables:

When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.

Samples of 31 weeks. The mean attendance on Tuesday evening is calculated as 5,060, with a population standard deviation of 540.

This means that:

[tex]\mu_{T} = 5060, s_T = \frac{540}{\sqrt{31}} = 97[/tex]

The mean attendance on Wednesday evening is calculated as 5,390, with standard deviation of 480.

This means that:

[tex]\mu_{W} = 5390, s_W = \frac{480}{\sqrt{31}} = 86.21[/tex]

A 7,000-seat theater is interested in determining whether there is a difference in attendance between shows on Tuesday evening and those on Wednesday evening.

At the null hypothesis we test if there is no difference, that is:

[tex]H_0: \mu_T - \mu_W = 0[/tex]

At the alternate hypothesis, we test if there is difference, that is:

[tex]H_a: \mu_T - \mu_W \neq 0[/tex]

The test statistic is:

[tex]z = \frac{X - \mu}{s}[/tex]

In which X is the sample mean, [tex]\mu[/tex] is the value tested at the null hypothesis and s is the standard error.

0 is tested at the null hypothesis:

This means that [tex]\mu = 0[/tex]

From the two samples collected:

[tex]X = \mu_T - \mu_W = 5060 - 5390 = -330[/tex]

[tex]s = \sqrt{s_T^2+s_W^2} = \sqrt{97^2+86.21^2} = 129.77[/tex]

Value of the test statistic:

[tex]z = \frac{X - \mu}{s}[/tex]

[tex]z = \frac{-330 - 0}{129.77}[/tex]

[tex]z = -2.54[/tex]

Pvalue of test and decision:

The pvalue of the test is finding the probability of the sample mean difference differing by 0 by at least 330, that is, P(|z| > 2.54), which is 2 multiplied by the pvalue of z = -2.54.

Looking at the z-table, z = -2.54 has a pvalue of 0.0067.

2*0.0067 = 0.0134

The pvalue of the test is 0.0134 < 0.05, which means that there is evidence that the mean attendance differs. The correct answer is given by option b.

Answer:

4|x|y²√(3yz)

She forgot the absolute value sign on x, and she left out the exponent on y.

Step-by-step explanation:

Step 1 is correct.

x may be positive, zero, or negative.

√x is always non-negative. To assure that √x² is non-negative, √x² = |x|.

√16 = 4

√3 = √3

√x² = |x|

√y² × √y² = √y^4 = y²

Since y² is always non-negative, there is no need for absolute value sign.

√y^4 = y²

Answer should be

4|x|y²√(3yz)

An Example of a caravan is eight covered wagons traveling together on the trail. Meaning, option A is correct.

A caravan, travel trailer, camper, tourer, or camper trailer is a trailer towed behind a road vehicle to provide a more comfortable and secure sleeping space than a tent.

It allows people to have their own home on a trip or vacation without relying on a motel or hotel, and it allows them to stay in places where none are available. However, in some countries, campers are restricted to designated sites where fees must be paid.

Caravans range from basic models that are little more than a tent on wheels to those that have several rooms with all of the furniture, furnishings, and equipment of a home. The solid-wall trailers can be made of metal or fibreglass.

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Answer:

Length is 13 and width is 3

Step-by-step explanation:

First find an equation that represents this situation.

39 = w * (5w-2)

This works because 39 (the total area) is w (the width) times 5w - 2 (the length). So solve for w.

39 = w * (5w-2)

First, distribute the w over the terms in parentheses

39 = 5w^2 - 2w

Then, subtract (5w^2 - 2w) from both sides.

39 - 5w^2 - 2w = 0

Factor the left side of the equation:

(−5w−13)(w−3)=0

Then set each factor equal to zero.

−5w−13 = 0

Add 13 to both sides, then divide both sides by -5 to isolate w. This leaves you with w = -13/5

Then the other factor:

w−3 = 0

Add 3 to both sides. You're left with w = 3.

So w is either -13/5, or 3. And since the width can't be negative, it is 3.

Now to find the height, plug 3 into the equation we had from earlier:

39 = w * (5w-2)

Substitute w into the equation:

39 = (3) * (5(3)-2)

39 = 3 * (15 - 2)

39 = 3 * (13)

Because 3 * 13 is equal, 13 is the length.

Answer: 72 square units

Step-by-step explanation: It is 72 square units because if you count the sides p and q you get 9 and the same with sides q and r you get 8 and if you multiply them together you get 72.

Answer:

50 items were sold for $75

35 items were sold for $90

Step-by-step explanation:

75 x 50 = 3750

90 x 35 = 3150

3750 +3150 = 6,900

Answer:

B

Step-by-step explanation:

you can use the process of elimination. For all of the answers the minimum and the maximum are incorrect except for option B.

Answer:

7/30

Step-by-step explanation:

We first have 7 blue and 3 red out of 10, so P(1st ball is red) = 3/10

Now, we have pulled a red ball out of the bag, leaving us with 7 blue and 2 red out of 9 total balls.Then P(2nd ball is blue) = 7/9.  Put this together, P(1st red AND 2nd blue) = 3/10⋅7/9 =7/30

The equation in the slope-intercept form is y = x + 3.8

What is a slope?

In mathematics, a line's slope, also known as its gradient, is a numerical representation of the line's steepness and direction.

Given:

A line that contains the points (–6.4, –2.6) and (5.2, 9).

If a line passes through two points (x₁ ,y₁) and (x₂, y₂) ,

then the equation of line is

y - y₁ = (y₂- y₁) / (x₂ - x₁) x (x - x₁)

So, the equation,

y + 2.6 = {(9 + 2.6)/(5.2 + 6.4)} (x + 6.4)

y + 2.6 = x + 6.4

y = x + 6.4 - 2.6

y = x + 3.8

Therefore, the equation y = x + 3.8 is in the slope-intercept form.

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Answer:The value of the z-score tells you how many standard deviations you are away from the mean. ... A positive z-score indicates the raw score is higher than the mean average. For example, if a z-score is equal to +1, it is 1 standard deviation above the mean. A negative z-score reveals the raw score is below the mean average.

Step-by-step explanation:

Answer:

True

Step-by-step explanation:

A function of form y = a^n is an exponential function as long as a>0.

Answer:

11x + 10y

Step-by-step explanation:

Answer:

you need help to progress cozy im guessing?

Step-by-step explanation:

Answer: Hope This Helps! :D

Step-by-step explanation:

I need help how to progress cozy

Answer:

a=5

Step-by-step explanation:

9514 1404 393

Answer:

   196π cm^3 ≈ 615.8 cm^3

Step-by-step explanation:

Put the numbers in the volume formula and do the arithmetic.

  V = 1/3πr^2·h

  V = 1/3π(7 cm)^2(12 cm) = 196π cm^3 ≈ 615.8 cm^3

Answer:

Nope-

Step-by-step explanation:

24x + 18 = 138

6 (4x + 2) = 132

Answer:

3/8 = 9/24

7/6 = 28/24

Step-by-step explanation:

Answer: E and F.

E:

4 * 4 * 4 = 64, and 64 = 64.

F:

-1 * -1 * -1 = 1, and 1 = 1

Answer:

D.10

Step-by-step explanation:

its check promise

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Answer:

sh.345

Step-by-step explanation:

The difference between the price selling with profit and price selling at a loss is 420-320 = 100

Profit is thrice the loss says we can take the difference in prices and divide it into 4 parts, x and 3x, representing the loss and thrice the loss, or profit margin.

x + 3x = 100

4x = 100

x = 25

loss would be 25,

profit would be 75

--------------------

sold at a profit: 420 -75 = sh.345

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Does this exercise seem similar to what you're doing in class?

-2

Step-by-step explanation:

12x＝x+26

-13x＝26

x＝-2

Answer:

B ( 6,-6) ..

I think I'm correct

Answer:

meh dont know how to do this tbh

Step-by-step explanation:

Answer:

AHHHHHHHHH

Step-by-step explanation:

Answer:

In total Dan dranked 11/8 of his bottle or as a mixed number 1 and 3/8 of his bottle.

Step-by-step explanation:

Answer:

$1600

Step-by-step explanation:

Interest = Principal x Rate x Time

I = 4000 x .08 x 5

I = 1600

Answer:

2 km

Step-by-step explanation:

Reference angle = 45°

Opposite = u

Hypotenuse = 2√2 km

To find u, apply SOH:

Sin 45° = Opp/Hyp

Sin 45° = u/2√2

√2/2 = u/2√2 (sin 45 = √2/2)

Cross multiply

2*u = √2*2√2

2u = 4

Divide both sides by 2

u = 4/2

u = 2 km

On solving the question, we can say that y using the given information we can prove that similar angle m ∠ABC = m ∠EDC.

Polygons' corresponding sides and corresponding angles are compared as part of the geometric tests for congruence and similarity. With care taken to maintain the order of adjacency, each side and each angle in one polygon is paired with a side or angle in the other polygon in these tests.

Given:

m ∠1 = m ∠2

m ∠2 = m ∠4

We have to prove that m ∠ABC = m ∠EDC

∠EDC = ∠3 + ∠4

m ∠ABC = m ∠1 + m ∠2

m ∠EDC = m ∠3 + m ∠4

m ∠1 + m ∠2 = m ∠3 + m ∠4      

m ∠ABC = m ∠EDC

Hence, by using the given information we can prove that  

m ∠ABC = m ∠EDC.

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