i need to reask this:
I need help with this since my school switched teachers and we didnt take it and the new teacher is refusing to teach us it

Susan bought 6 boxes of chocolate cookies, and 2/5(6) = 2.4 or 2 boxes of butter cookies.

Let's call the number of boxes of chocolate cookies that Susan bought "C". Then, she bought 2/5 as many boxes of butter cookies, which is 2/5C.

Let's call the cost of each box of chocolate cookies "x". Then, the cost of each box of butter cookies is x-2, since each box of butter cookies costs $2 less.

We know that the total cost of the chocolate cookies was $84 more than the total cost of the butter cookies. This can be expressed as:

Cx = 2C/5(x-2) + 84

Simplifying this equation, we get:

3/5Cx = 84 + 2/5C(2)

Multiplying both sides by 5/3, we get:

Cx = 140 + 4C/3

We also know that the total cost of all the cookies was $156, which can be expressed as:

Cx(x) + (2/5C)(x-2) = 156

Substituting Cx from the previous equation, we get:

(140 + 4/3C)(C) + (2/5C)(C-2) = 156

Simplifying and solving for C, we get:

C = 6

So Susan bought 6 boxes of chocolate cookies, and 2/5(6) = 2.4 or 2 boxes of butter cookies.

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By using unitary methods, the amount of rope is needed for both sites is 350 meters.

Unitary method is a mathematical problem-solving technique that involves finding the value of one unit and using it to calculate the value of other units.

Let's start by looking at Site A, which is a rectangular area with a length of 60 meters and a width of 40 meters. To surround this area with rope, we need to measure the perimeter, which is the distance around the site.

=> Perimeter = 2 (length + width)

=>  2(60 + 40)

=> 2 x 100

=> 200 meters

Therefore, we need 200 meters of rope to surround Site A.

Now let's move on to Site B, which is also rectangular but has a length of 45 meters. To find the width of Site B, we can use the fact that it is similar in shape to Site A. Similar shapes have the same angles and proportional sides, so we can use a unitary method to find the missing dimension.

The length ratio of Site B to Site A is

=> 45/60 = 3/4

Since the shapes are similar, the width of Site B must also be 3/4 of the width of Site A.

Width of Site B = 3/4 x 40 = 30 meters

Now we can use the same formula as before to find the perimeter of Site B:

Perimeter = 2 (length + width)

=> 2(45 + 30)

=> 2 x 75

=> 150 meters

Therefore, we need 150 meters of rope to surround Site B.

To find the total amount of rope needed for both sites, we simply add the two perimeters:

Total rope needed = 200 + 150 = 350 meters

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Answer:

  15

Step-by-step explanation:

You want the sum of the numbers in the diagram that belong to exactly 3 circles.

We find it easier to eliminate numbers that do not belong to 3 circles. In the attachment, the red lines strike through numbers belonging to 1 circle, the blue lines strike numbers belonging to 2 circles, and the green line strikes the number belonging to 4 circles. (The numbers inside the smallest circle are also in the larger circle surrounding it.)

The numbers that are in 3 circles only are 1, 3, 11. Their sum is 15.

We draw the conclusion that perhaps the actual probability of the die falling on the 4th position is between 0.398 and 0.562, with a 90% confidence level. The die appears to be fair since this contains 0.5.

It is predicated on the probability that something might happen. The concept of probability relies mainly on the justification for probability. A coin is tossed, for instance, and the hypothetical likelihood of receiving a head is 1 in 2.

P(A) = f / N determines probability, which quantifies the possibility of an event happening. Probability and odds are related, but probability is necessary for odds to exist. Prior to calculating the likelihood that an event will occur, probability is required.

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Answer:

40

Step-by-step explanation:

To determine the number of rolls, take the number of packs and multiply by the number of rolls per pack.

10 *4 = 40

40 rolls total.

Answer:

40 rolls

Step-by-step explanation:

10 packs * 4 rolls per pack

What does this problem ask for:

 --> which statement is sufficient to prove that:

     ∠ADB ≅ ∠ABD

Let's separate this image into two triangles: ΔADC and ΔABC

   --> prove that these triangles are congruent

       --> thus proving that: ∠ADB ≅ ∠ABD

Let's consider what evidence we have:

             --> thus: ∠ADC = ∠ABC

The minimum information that we have:

  --> prove that one pair of sides on both triangles are congruent

      --> based on the SSA Triangle Formula

             --> Two triangles that have two sides and one angle that are

                   equal, are therefore congruent

Based on the choices given:

 --> if DA = BA or DA is congruent to BA

  --> then ΔADC = ΔABC

Thus:

--> ∠ADC = ∠ABC

Answer: DA is congruent to BA

Answer:

The third option

Step-by-step explanation:

The third option, {1, 4, 7, 10, ...} is an arithmetic sequence because you add 3 to get from 1 to 4, and then you add 3 to get to 7, and then you add another 3 to get to 10.

Leo Gandolfi would save $54.34 by paying off the loan when the next payment is due.

What is percentage ?

Percentage can be defined as product of ratio of given value, total value and hundred.

To find out how much Leo Gandolfi saves by paying off the loan early, we need to first calculate how much interest he would pay if he were to continue making payments for the full 6-month term of the loan.

The total interest on the loan for the full 6 months can be calculated as:

Total interest = Total payments - Loan amount

We know the loan amount is $1,800, and the monthly payment is $310.50, so the total payments for the full 6 months would be:

Total payments = Monthly payment x Number of payments

Total payments = $310.50 x 6 = $1,863

Therefore, the total interest paid over the 6-month term of the loan would be:

Total interest = $1,863 - $1,800 = $63

Now, we need to calculate how much interest Leo Gandolfi would pay if he were to pay off the loan after making 4 payments.

The remaining balance on the loan after 4 payments is $612.34, so if Leo were to make one more payment, the remaining balance would be:

Remaining balance = $612.34 - $310.50 = $301.84

To calculate the interest paid on this remaining balance, we need to calculate the interest for one month:

Monthly interest rate = Annual interest rate / 12

Monthly interest rate = 12% / 12 = 1%

Monthly interest = Monthly interest rate x Remaining balance

Monthly interest = 1% x $301.84 = $3.02

Therefore, if Leo were to make one more payment, he would pay $310.50, which includes both the principal and the interest. So, the amount of interest he would pay if he were to pay off the loan after 4 payments is:

Interest paid = Total payment - Remaining balance

Interest paid = $310.50 - $301.84 = $8.66

So, by paying off the loan early, Leo Gandolfi would save:

Savings = Total interest - Interest paid

Savings = $63 - $8.66 = $54.34

Therefore, Leo Gandolfi would save $54.34 by paying off the loan when the next payment is due.

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Answe[tex]3\sqrt{2)[/tex]

Step-by-step explanation:

For the given data, the cutoff point using the upper fence is 791.25 minutes.

To find the cutoff point using the upper fence, we need to first calculate the lower and upper fences.

The lower fence is given by the formula:

Lower fence = Q1 - 1.5 x IQR

where Q1 is the first quartile and IQR is the interquartile range.

The upper fence is given by the formula:

Upper fence = Q3 + 1.5 x IQR

where Q3 is the third quartile and IQR is the interquartile range.

To find these values, we first need to order the data:

307 311 322 321 354 363 377 406 410 425

435 461 464 474 499 505 513 534 548

The first quartile (Q1) is the median of the lower half of the data:

Q1 = (354 + 363) / 2 = 358.5

The third quartile (Q3) is the median of the upper half of the data:

Q3 = (513 + 534) / 2 = 523.5

The interquartile range (IQR) is the difference between the third and first quartiles:

IQR = Q3 - Q1 = 523.5 - 358.5 = 165

Now we can calculate the lower and upper fences:

Lower fence = Q1 - 1.5 x IQR = 358.5 - 1.5 x 165 = 91

Upper fence = Q3 + 1.5 x IQR = 523.5 + 1.5 x 165 = 791.25

Therefore, the cutoff point using the upper fence is 791.25 minutes. Any customer who uses more than 791.25 minutes in a month should be contacted by the phone company as part of the fraud prevention program.

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Answer: rs>4

Step-by-step explanation: The product of r and s just means rs. Then, when it says more than, you know its going to be a greater than sign: >. So your inequality would be rs>4

Step-by-step explanation:

first open the bracket

200+320=520

then multiple the answer with 250

thus: 250×520=130,000

130,000

Step-by-step explanation:

first calculate the bracket 200 + 320 =520

than multiply it by 250. 250 x 520 = 130,000

Answer:

1.) -12

2.) 28

3.) 40

Step-by-step explanation:

The elevation of an object is the height or depth of the object relative to the sea level. If the object is above sea level, its elevation will be positive. However, if the object is below sea level, its elevation will be negative. Therefore, we can conclude that the elevation of the fish is -12 m because it is below sea level.

The number of students attended the play are 400 in number.

Two or more expressions with an Equal sign is called as Equation.

At a local play, student tickets cost $5 each and adult tickets cost $10 each. If ticket sales were $3,000

5x+10y=3000

The total number of tickets are 500

x+y=500

y=500-x

Now plug this in above equation

5x+10(500-x)=3000

5x+5000-10x=3000

5000-5x=3000

Add 5x on both sides

5000-3000=5x

2000=5x

Divide both sides by 5

400=x

Hence, the number of students attended the play are 400 in number.

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The possible lengths for the third side could be: any length between 1 inch and 12 inches (but not equal to either 8 inches or 5 inches) any length greater than 12 inches

What is triangle ?

Triangle can be defined in which it consists of three sides , three angles and sum of three angles is always 180 degrees.

Given ,

Lance is drawing a triangle. He draws one side that is 8 inches long and another side Se that is 5 inches long.

The third side of the triangle can be any length that satisfies the triangle inequality theorem. According to this theorem, the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

So, in Lance's triangle, if the first side is 8 inches long and the second side is 5 inches long, then the third side must be less than 8 + 5 = 13 inches.

So, the possible options for the third side are:

6 inches

7 inches

9 inches

10 inches

11 inches

12 inches

13 inches or longer.

Therefore, The possible lengths for the third side could be: any length between 1 inch and 12 inches (but not equal to either 8 inches or 5 inches) any length greater than 12 inches

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The value of a is obtained as follows:

a = 5.

The slope-intercept definition of a linear function is given as follows:

y = mx + b.

In which:

When two lines are perpendicular, the multiplication of their slopes is of -1.

Then the equation to obtain the value of a is given as follows:

0.5(1 - a) x 0.5 = -1.

0.25(1 - a) = -1

1 - a = -4

a = 1 + 4

a = 5.

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I agree with Kofi that the circumference of a circle equals pi times the diameter. This is because the formula for the circumference of a circle is given by:

C = 2πr

Where C is the circumference, π is pi, and r is the radius of the circle. To find the diameter, we can double the radius, so we can write:

C = 2π(r) = π(2r) = πd

Where d is the diameter of the circle.

So, the formula for the circumference of a circle is indeed pi times the diameter, not just pi times the radius.

The posterior probability of having cogscitis, given a positive test result from Test 2, is 0.0094 or about 0.94%. This indicates that even though you had a positive Test 2 result, the likelihood that you actually have CNS inflammation is still extremely low less than 1%.

With your positive test result from Test 2, we must apply Bayes' theorem to get Doctor B's posterior probability that you have cogscitis, which is:

P(A|B) = P(B|A) * P(A) / P(B)

The following probabilities are known:

P(A) = 0.001 (the population prevalence and previous likelihood of getting cogscitis)

P(B|A) = 0.95 (the possibility of receiving a positive Test 2 result while having cogscitis)

P(B|not A) = 0.10 (the possibility of receiving a positive test result from Test 2 even if you do not have  cogscitis)

The law of total probability, which asserts the following, can be used to determine the marginal probability of a positive test result (P(B)):

P(B) = P(B|A) * P(A) + P(B|not A) * P(not A)

where:

P(not A) = 1 - P(A) = 0.999 (the multiplier of the previous probability of contracting cogscitis)

Substituting the values, we get:

P(B) = 0.95 * 0.001 + 0.10 * 0.999 = 0.1008

The posterior probability of developing cogscitis can now be determined, given a positive test result from Test 2:

P(A|B) = P(B|A) * P(A) / P(B)

= 0.95 * 0.001 / 0.1008

= 0.0094

Therefore, the posterior probability of having cogscitis, given a positive test result from Test 2, is 0.0094 or about 0.94%. This indicates that even though you had a positive Test 2 result, the likelihood that you actually have CNS inflammation is still extremely low less than 1%.

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The next two days when Alicia would be allowed to eat junk foods are Thursday and Tuesday.

The first day after Saturday when Alicia would have junk food can be determined by counting the fifth day after Saturday.

Sunday - first day

Monday - second day

Tuesday - third day

Wednesday - fourth day

Thursday - fifth day

The next day after Thursday when Alicia would have junk food is the fifth day after Thursday.

Friday - first day

Saturday - second day

Sunday - third day

Monday - fourth day

Tuesday - fifth day

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Answer:  His average is 85 now.

Step-by-step explanation:

Average is the sum of all his math tests divided by the number of the math tests he took, so we get:

[tex]\frac{sum }{11}=80[/tex]

sum = 11 x 80

sum = 880

880 - 30, we get 850, which becomes the new sum of the 10 math test scores, because he eliminated one test score.

[tex]\frac{850}{10} =85[/tex]

His average is 85 now.

If administrators at International University are curious how students' GAs after their first year compare to their high school GPs. The correct answer is: C. We cannot assume independence between the high school GPAs in the sample.

The GPAs of the students in the sample at the end of their first year at the university are likely to be correlated with their high school GPAs, as students with higher high school GPAs are likely to perform better in university as well.

Thus, the high school GPAs of the students in the sample are not independent of each other, and using the formula for the standard deviation of the sample would not be appropriate in this situation.

Therefore the correct option is C.

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The correct question is:

Administrators at International University are curious how students' GPAs after their fist year compare to their high school GPAs. They plan on taking an SRS of 80 of the 900 freshmen to look up their high school GPAs. They plan to look at the difference between the mean high school and the mean university GPA for students in the sample at the end of their first year. Why is it not appropriate to use the formula for the standard deviation of

The samples are not independent of each other.

We cannot assume independence between the university GPAs in the sample.

We cannot assume independence between the high school GPAs in the sample.

The samples are independent of each other.

Answer: A

Step-by-step explanation:

The sample is sampling the high school GPA and college GPA of the same students meaning the samples are not independent.

Answer:

600 calories

Step-by-step explanation:

The problem asks us to use the given trend line to find how many calories are burned after 40 minutes. The trend line is the slope of the graph that is given, so all that we have to do is find 40 minutes on the x axis, and then find the point on the slope in the given graph that has an x value of 40, and this point ends up being (40, 600). This means that in 40 minutes, 600 calories are burned.

PLEASE GIVE BRAINLIEST!

have a good day ;)

Answer:

2500,500,100, 20, 4, 0.8

Step-by-step explanation:

dividing by 5 every term.

2500/ 5 = 500

500/ 5 = 100

100/ 5 = 20

20/5 = 4

4/5 = 0.8

The value of the unknown side length, BC, in given diagram is 28.3 ft

From the question, we are to determine the value of the unknown side length in the given diagram

By similar triangles theorem, we can write that

AX/XY = AB/BC

From the given information,

AX = 12ft

XY = 17 ft

AB = AX + XB

= 12 ft + 8 ft

= 20 ft

BC = ?

Then, we can write that

12/17 = 20/BC

Cross multiply

12 × BC = 17 × 20

12 × BC = 340

BC = 340/12

BC = 28.3

Hence, the value of BC is 28.3 ft

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The expression that represents all the possible widths of the rectangle is given as follows:

0 < x < 5.

The area of a rectangle of length l and width w is given by the multiplication of these dimensions, as follows:

A = lw.

For this problem, the length is 5 meters more than five times the width, hence:

l = 5 + 5w.

Hence the area is given as follows:

A = w(5 + 5w)

A = 5w² + 5w.

The area is less than 100m², hence the inequality is given as follows:

5w² + 5w < 100

5w² + 5w - 100 < 0.

w² + w - 20 < 0.

(w + 5)(w - 4) < 0.

Hence the solutions are:

The width cannot be negative, hence the interval is:

0 < x < 5.

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Answer:

0.058 hectometers

Step-by-step explanation:

There are 0.058 hectometers in 580 millimeters.

To convert millimeters to hectometers, you need to divide the number of millimeters by 100,000. So, 580 millimeters divided by 100,000 equals 0.0058 hectometers, or 0.058 hectometers when rounded to two decimal places.

We have drawn the graph for the given inequality.

What is inequality?

Inequality is a mathematical statement that compares two values or expressions and shows their relative size. It is represented by the symbols >, <, ≥, or ≤, which respectively mean "greater than", "less than", "greater than or equal to", and "less than or equal to". Inequalities can also include variables and can be used to describe a range of possible values for that variables.

For the given inequality y > -x - 5

we can draw the graph as shown below:

Hence, we have drawn the graph for the given inequality.

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When the dimension of height is doubled, the volume of the cone also gets doubled.

Volume is a mathematical term used to describe how much three-dimensional space an item or closed surface occupies. Volume is measured in cubic units like m3, cm3, in3, etc. The area that any three-dimensional solid occupies is known as its volume. These solids can take the form of a cube, cuboid, cone, cylinder, or sphere.

Various forms have various volumes. We have studied the several solids and forms that are specified in three dimensions, such as cubes, cuboids, cylinders, cones, etc., in 3D geometry. We will discover how to find the volume for each of these shapes.

Volume of a cone is given by,

V = πr²h/3

Where,

V = Volume,

r = radius of the base,

h = height of the cone.

Let, height at first be x, then volume would be,

V1 = πr²x/3

As the height is doubled, so height = 2x, then volume would be,

V2= πr²(2x)/3

We observe that:

V2 = 2(πr²x/3)

V2 = 2V1

Therefore, when the height is doubled, the volume of the cone also gets doubled.

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