(6d+5)−(2−3d) = what is the answer

Answer:

x = 15.8

Hope this helps...Have a good day!!

The probability  that the average scholarshi[s in the samle greater than 20,000 is (69.729, 74.271).

Let X: Marks of students and be the population average marks.

X ~ N(72, 16)

The formula for the CI for is,

CI = mean + tₐ/₂ , ₙ₋₁ s/n

= 72 ± 2.539 × 4/20

= 72 ± (2.539 × 0.8944)

= 72 ± 2.27

= 72 - 2.27 , 72 + 2.27

= (69.729, 74.241)

Therefore, the required 98% CI for the average marks of the students is (69.729, 74.271).

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Answer:

just add extra things to make it at least 20 charecters like below

Example:

(spaces) [your text] (spaces)                          

Answer:

Not sure if this is what you meant by graph and table but heres what i got

Step-by-step explanation:

The probability that it will rain (event r), which formula would we use is

P(AB) = P(A) P(BA)/ P(B).

Bayes' theorem is a way to find probabilities when we know other probabilities.

Formula:

P(AB) = P(A) P(BA)/ P(B)

Tells how often A occurs when B occurs. If we know how often B occurs when A occurs, then P(BA)

and how likely it is that A is independent, write P(A)

and how likely it is that B is independent, write P(B)

Now,

The meteorological woman said, “The probability of rain on Saturday is 40% and the probability of rain on Sunday is 40%, so the probability of rain this weekend is 100%.”

I decided to simplify the problem by saying P(non-Saturday) = 0.5 and P(non-Sunday) = 1.0.

This obviously means P(non this weekend) = 1.0. Rain this weekend I started with p(rain on Saturday) x p(rain on Sunday) but I gave 0.5 and tried p(it didn't rain this weekend) = p(it didn't rain on Saturday) x. P (it did not rain on Sunday) is 0.

So P(rain this weekend) = 1 - P(no rain this weekend) = 1.0

Using this method, P(rain this weekend) = 0.75 or 75% of the original statement.

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Answer:

i cannot understand

Step-by-step explanation:

cos 29 = 1. 9 / x

Cross - mulitply, we have:

x = 1. 9 / cos 29

x = 2.17 feet = 2. 2 feet ( nearest tenth )

Answer:

48 ounces

Step-by-step explanation:

16 x 3 is 48,so there is your answer.Hope it helps!

Inference from a voluntary response sample can't be trusted.

Inference from a voluntary response sample can't be trusted.

Voluntary response samples are those in which individuals choose whether or not to participate in the survey or poll. In such samples, respondents self-select themselves based on their own preferences or motivations. This type of sampling method can introduce significant bias and make it difficult to generalize the results to the entire population.

In the given scenario, the poll is based on voluntary responses from visitors to the website. Therefore, the sample is not representative of the entire population, as it only includes individuals who chose to participate.

This means that the poll results may not accurately reflect the opinions or characteristics of the larger population. Hence, any inference or calculation based on this sample cannot be trusted.

The other options listed in the question ("the sample is too large," "yesterday's responses are meaningless today," and "the sample is too small") are not accurate reasons to refuse calculating a confidence interval in this context.

The size of the sample alone does not determine the need for a confidence interval, and whether yesterday's responses are meaningful today would depend on the specific question or context. Additionally, the sample size of 26,494 is generally considered large enough to calculate a confidence interval, although the validity of the inference would still be questionable due to the voluntary response sampling method.

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The probability for -2.51 ≤ Z ≤ -1.53 is 0.0570.

The probability for Z ≥ -2.12 is 0.9830.

To find the probability for the given scenarios, we can use the Z-table or standard normal distribution table, which provides the cumulative probabilities for a standard normal random variable Z.

1) For -2.51 ≤ Z ≤ -1.53:

Find the cumulative probability for Z = -1.53 and Z = -2.51 using the Z-table. Then subtract the cumulative probability of Z = -2.51 from the cumulative probability of Z = -1.53.

P(-1.53) = 0.0630
P(-2.51) = 0.0060

P(-2.51 ≤ Z ≤ -1.53) = P(-1.53) - P(-2.51) = 0.0630 - 0.0060 = 0.0570

2) For Z ≥ -2.12:

Find the cumulative probability for Z = -2.12 using the Z-table. Since we want the probability that Z is greater than or equal to -2.12, we need to subtract the cumulative probability from 1.

P(-2.12) = 0.0170

P(Z ≥ -2.12) = 1 - P(-2.12) = 1 - 0.0170 = 0.9830

So, the probability for -2.51 ≤ Z ≤ -1.53 is 0.0570, and the probability for Z ≥ -2.12 is 0.9830.

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Answer: x<1

Step-by-step explanation:

add 12 to both sides, divide by 2 on both sides.

Answer:

first blank= 2

second blank= 3

Step-by-step explanation:

Let's break down the given information and solve the problem step by step:

Let's assume:

The cost of the burger is 'b' dollars.

The cost of the souvenir is 's' dollars.

The cost of the pass is 'p' dollars.

According to the given information:

The burger was 1/6 as much as the souvenir. This can be expressed as: b = (1/6) * s.

The souvenir cost 3/4 the cost of the pass. This can be expressed as: s = (3/4) * p.

Erica had $4.00 left over after buying these items. This can be expressed as: b + s + p + 4 = 30.25.

Now, let's solve these equations to find the cost of each item.

Substituting the value of 's' from equation 2 into equation 1:

b = (1/6) * ((3/4) * p)

b = (3/24) * p

b = (1/8) * p

Substituting the values of 'b' and 's' into equation 3:

(1/8) * p + ((3/4) * p) + p + 4 = 30.25

Multiply through by 8 to eliminate the fraction:

p + 6p + 8p + 32 = 242

15p + 32 = 242

15p = 210

p = 210 / 15

p = 14

Substituting the value of 'p' into equation 2 to find 's':

s = (3/4) * 14

s = 10.50

Substituting the value of 'p' into equation 1 to find 'b':

b = (1/8) * 14

b = 1.75

Therefore, the cost of the burger is $1.75, the cost of the souvenir is $10.50, and the cost of the pass is $14.0

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Answer: -163, -180, -197

Step-by-step explanation:

Compute u * v if u and v are unit vectors and the angle between them is Pie. U * v =  is u.v = -1

that u and v are unit vectors and the angle between them is π.To find u*v, we use the dot product of vectors. Dot product of two vectors a and b is given bya.

b = |a| |b| cosθ

Where |a| is the magnitude of vector a, |b| is the magnitude of vector b, and θ is the angle between the two vectors.Let's find u*v using this formula.

u.v = |u| |v| cos π(u.v) = 1 × 1 × (-1))= -1

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To find out the number of groups of 1/5 in 3, we need to divide 3 by 1/5.

We can also write this as a fraction: 3 / (1/5)

To divide fractions, we flip the divisor and then multiply. This gives us:3 / (1/5) = 3 x 5/1 = 15So there are 15 groups of 1/5 in 3.To show this on a number line, we can first mark 0 and 3 on the number line.

Then we can draw 15 equally spaced tick marks between 0 and 3. Each tick mark represents 1/5, so 15 tick marks represent 15 groups of 1/5.

We can also label the tick marks with fractions to show that each tick mark represents 1/5.

The number line should look something like this:0 ------- 1/5 ------- 2/5 ------- 3/5 ------- 4/5 ------- 1 ------- 6/5 ------- 7/5 ------- 8/5 ------- 9/5 ------- 2 ------- 11/5 ------- 12/5 ------- 13/5 ------- 14/5 ------- 3

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Answer:

It will be 40

Step-by-step explanation:

Hope this helped have an amazing day!

The given statement is,

→ if u have 10 and add 20 and add 10.

In mathematical expression,

→ (10 + 20) + 10

→ 30 + 10

→ 40 is the answer.

Answer:

39

Step-by-step explanation:

esitmate 394.6 to be 390 and 9 to be 10

Answer:

39.5

Step-by-step explanation:

i got this because 394.6 is rounded to 395. 9 rounded to 10. divide them and get 39.5

Answer:

the distributive properties

Step-by-step explanation:

Answer:

a) AB = XY

BC = YZ

CA = XZ

b) <A = <X

<B = <Y

<C = <Z

c) <X= 50°

Since <A= 50° and <A = <X

d) Measure of <C will be

<C + <A = 180°

<C + 50° = 180°

<C = 180° - 50°

<C = 130°

Hope it helps:)

Answer:

B. 3x+9

hope this helped

Answer:

10

I did the calculations

Gross margin is calculated by subtracting the cost of goods sold from the total revenue.

To understand this calculation more comprehensively, let's break it down:

1. Total Revenue: Total revenue represents the total amount of money generated from the sales of goods or services.

It includes the selling price of the products or services and any additional income related to sales, such as shipping charges or discounts.

2. Cost of Goods Sold (COGS): Cost of Goods Sold refers to the direct costs incurred in producing or acquiring the goods that were sold.

It includes expenses such as the cost of raw materials, manufacturing costs, labor costs directly associated with production, and any other expenses directly tied to the production of goods.

By subtracting the COGS from the total revenue, we arrive at the gross margin, which represents the amount of money remaining after accounting for the direct costs associated with the production or acquisition of the goods sold.

Gross margin reflects the profitability of the core business operations before considering other indirect expenses such as overhead costs, marketing expenses, or administrative costs.

The formula for calculating gross margin can be represented as follows:

Gross Margin = Total Revenue - Cost of Goods Sold

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Answer: A) $2.40 B) 3 C) $0.80

A, B, and C are in order of the blanks.

Answer:

The student found the unit cost for 2 pounds of noodles, not 3 pounds. To find the unit cost for 3 pounds, divide the total cost, $2.40

by the number of pounds, 3 lbs

So, the cost per pound is $0.80

Step-by-step explanation:

2.40 divided by 3 is $0.80

I hope this helped, please mark Brainliest, thank you!

Therefore, the sign of m/n (-mn²) is positive.

To determine how successfully a program, practice, intervention, or initiative accomplishes its objectives, it might be evaluated. Evaluation is a systematic technique to accomplish this. Evaluations allow programs and efforts to learn what is effective and what needs to be improved.

Given that m is negative and n is positive, we can evaluate the expression:

m/n (-mn²)

= -(m² * n)

Since m is negative and n is positive, the product of m² and n will be negative. Then, multiplying it by -1 will give us a positive value.

Therefore, the sign of m/n (-mn²) is positive.

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Answer: 14and12

Step-by-step explanation:

Answer:

I need an image to help you but heres something that i found to help you :)

Step-by-step explanation:

Vertical angles are angles opposite each other where two lines cross.

Answer:

Option (C) is correct.

Step-by-step explanation:

The given options of the possible equation for the graph are as follows:

\((A) y=2\left(\frac{3}{2}\right)^x \\\\(B) y=-2\left(\frac{3}{2}\right)^{-x} \\\\(C) y=2\left(\frac{2}{3}\right)^x \\\\(D) y=-2\left(\frac{2}{3}\right)^{-x} \\\\\)

The given graph is decreasing and at x=0, y=2.

So, first checking the value of the given options for x=0

\((A) y=2\left(\frac{3}{2}\right)^0=2\times 1= 2 \\\\(B) y=--2\left(\frac{3}{2}\right)^{-0}= -2\times 1= -2 \; (not\; possible) \\\\(C) y=2\left(\frac{2}{3}\right)^0= 2\times 1= 2 \\\\(D) y=2\left(\frac{2}{3}\right)^{-0} = -2\times 1= -2 \; (not\; possible)\)

As, for x=0, y=2, so options (C) and (D) are not possible, so rejected.

Now, checking the nature (increasing or decreasing) of the given equation by differentiating it.

For option (A),

\(\frac{dy}{dx}=2\left(\frac{3}{2}\right)^{x}\times \ln\left(\frac{3}{2}\right)\)

As \(\ln \left(\frac{3}{2}\right)=\ln(1.5)>0 \;and\; \left(\frac{3}{2}\right)^{x} >0\)

So, \(\frac{dy}{dx}>0\)

Therefore, the function in option (A) is increasing function.

Similarly, for option (C),

\(\frac{dy}{dx}=2\left(\frac{2}{3}\right)^{x}\times \ln\left(\frac{2}{3}\right)\)

As \(\ln \left(\frac{2}{3}\right)=\ln(0.67)<0 \;and\; \left(\frac{3}{2}\right)^{x} >0\)

So, \(\frac{dy}{dx}<0\)

Therefore, the function in option (C) is decreasing function.

As the given graph is decreasing, so, (C)  represents\(y=2\left(\frac{2}{3}\right)^x\) the given graph.

Hence, option (C) is correct.

The equation \((C) y = 2(\dfrac{2}{3})^{x\) could be the equation to represent the given graph is decreasing.

We have to determine, Which of the following equations could be the equation to represent the given graph.

According to the question,

The given options of the possible equation for the graph are as follows:

The given graph is decreasing and at x = 0, y = 2.

Then,

First checking the value of the given options for x = 0.

For x = 0, y = 2, so options (C) and (D) are not possible, so the options are rejected.

Therefore,

To check the nature (increasing or decreasing) of the given equation by differentiating it.

\(\dfrac{dy}{dx} = 2(\dfrac{2}{3})^x \times ln(\dfrac{3}{2})\\\\ln(\dfrac{3}{2}) = ln(1.5) >0 \ and\ (\dfrac{3}{2})^{x} >0\\\\So, \dfrac{dy}{dx}>0\\\\\)

Therefore, The function in option A  is increasing function.

For function c;

\(\dfrac{dy}{dx} = 2(\dfrac{2}{3})^x \times ln(\dfrac{2}{3})\\\\ln(\dfrac{3}{2}) = ln(0.67) <0 \ and\ (\dfrac{3}{2})^{x} >0\\\\So, \dfrac{dy}{dx}<0\\\\\)

Therefore, The function in option c is decreasing function.

The given graph is decreasing, so, the function c represents the given graph decreasing.

Hence, option (C) is correct.

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Answer:

n =11

Step-by-step explanation:

solve for x by simplifying both sides of the equation then isolating the variable

Answer:

  8x +13y = 33

Step-by-step explanation:

The median RA will be the line through point R and point A, which is the midpoint of QS.

  A = (Q +P)/2

  A = ((3, 7) +(2, -5))/2 = (3+2, 7-5)/2 = (2.5, 1)

The slope of line RA is given by the slope formula ...

  m = (y2 -y1)/(x2 -x1) = (1 -5)/(2.5 -(-4)) = -4/6.5 = -8/13

The y-intercept of line RA is given by ...

  b = y1 -m(x1)

  b = 5 -(-8/13)(-4) = 5 -32/13 = 33/13

Then the slope-intercept equation of line RA is ...

  y = -8/13x +33/13

The standard form equation can be written as ...

  13y = -8x +33

  8x +13y = 33 . . . . . standard form equation of median RA