Gaby has 89 friendship bracelets. She has 4 friends, Lulu, Brianna, Brittany and Mariah. When, they get the bracelets are they all going to have the same amount? Why or why not?


HELP MY BROTHER HES 8 YRS OLD!!!!! IF YOU ANSWER IT CORRECTLY YOU WILL GET BRAINLIEST

The area the surface generated by revolving the curve about the given axis stated above is: 98π

Because  runs from 0 to pi/2 and rotation occurs about the y axis, surface area is given by:

\(\small S = \int _0^{\frac{\pi}{2}}2\pi xds\)     ----------------------------------------------------1)

This is so where;

ds = \(\sqrt{[(dx/dt)^{2}} + (dy/dt)^{2}] dt\)

ds = \(\sqrt{([dx/d\theta)^{2}}+(dy/d\theta)^{2}] d\theta\)

ds = \(\sqrt{([dx/d\theta (7cos\theta))^{2}}+(dy/d\theta (7cos\theta))^{2} d\theta]\)

ds = \(\sqrt{[(-7cos\theta)^{2}} + (-7cos\theta)^{2}] \theta\)

ds = \(\small \sqrt{49sin^2(\theta)+49cos^2(\theta) }d\theta\)

ds = \(\small \sqrt{49(sin^2(\theta)+cos^2(\theta)) }d\theta\)

ds = √49dθ

ds = 7dθ

Hence, we can say that,

\(\small S = \int _0^{\frac{\pi}{2}}2\pi (7cos(\theta))(7d\theta)\)

\(\small S =98\pi \int _0^{\frac{\pi}{2}}cos(\theta)d\theta\)

\(\small S =98\pi \left [ 1-0 \right ]\)

S = 98π

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Full Question:

Find the area of the surface generated by revolving the curve about the given axis. x = 7 cos(θ), y = 7 sin(θ), 0 ≤ θ ≤ π 2 , y-axis

Answer:

26

Step-by-step explanation:

2 plus 24 is 26

e) The test statistic and P-value for the chi-square test of homogeneity would be -1.75 and 0.004, respectively.

A chi-square test of homogeneity is a useful tool for comparing two or more categorical variables. In this case, the two variables are smoking (smokers and non-smokers) and alcohol consumption (those who had consumed alcohol in the past week and those who hadn't).

The chi-square statistic is calculated by finding the difference between the observed and expected frequencies of the two groups and squaring it. The expected frequencies are found by multiplying the sample size by the overall probability of success (in this case, drinking alcohol).

The P-value is then calculated based on the chi-square statistic and the degrees of freedom (in this case, one). In this case, the chi-square statistic is -1.75 and the P-value is 0.004.

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Solution: A scatter plot is made to model the number of calories in different portions of fish sticks. The data used for the scatter plot are shown in the table below:

Number of portions

5 3 8 6 1 4

Number of calories

250 150 400 300 50 200

What does the slope of the model represent?

Answer: The number of calories in each portion of fish sticks

Answer:

The number of calories in each portion of fish sticks

Step-by-step explanation:

Hope this helps! God bless :)

Answer:

58.480766068854

Step-by-step explanation:

hope it will help you

Answer:

942.5 cm3

Step-by-step explanation:

Answer:

7)B

8) C

9) A

Step-by-step explanation:

Step-by-step explanation:

Vertical length of the smaller  triangle is:

Horizontal length of the smaller triangle is:

The fraction:

This fraction is same for the larger triangle, which is 4/6 = 2/3.

It means the slopes are same.

Since the slopes are same, the segments are part of same red line.

The simplified form of the expression -6w + (–8.3) + 1.5+ (–7w) is -13w - 6.8.

Given the expression in the question;

-6w + (–8.3) + 1.5+ (–7w)

To simplify, first remove the parenthesis

Note that;

-6w + × - 8.3 + 1.5 + × - 7w

-6w - 8.3 + 1.5 - 7w

Next collect and add like terms

-6w - 7w - 8.3 + 1.5

Add -6w and -7w

-13w - 8.3 + 1.5

Add -8.3 and 1.5

-13w - 6.8

Therefore, -13w - 6.8 is the simplified form.

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If the debt is normally distributed with a population standard deviation of $1100 and 15% of college seniors owe less than the amount of money is equals to the $2121.96.

The area under the standard normal curve represents to probability. The total area under the curve is equals to one. A Standard Normal Cumulative Probability, is a table which provides the cumulative probability of the left tail, as in the values less than the z-score in question. Here,

population mean, μ = $3262

standard deviation, σ = 1100

P- value = 15%

Using the normal distribution table, Z-score value is equals to - 1.0364. Now, we can use Z-scores formula is written \(Z = \frac{X - \mu}{\sigma }\)

Substitutes the known values in above formula, - 1.0364 = (X - 3262 )/1100

=> X - 3262 = 1100× ( - 1.0364)

=> X = 3262 - 1140.04

=> X = 2121.96

Hence, required value is $ 2121.96.

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The maximum deflection of the simply supported beam, given the applied load P, the length of the beam L, the Young's Modulus E of the beam material, and the moment of inertia I, is equal to (5*P*L^3)/1536.3*10^15 m.

The maximum deflection of the simply supported beam is given by:

Maximum deflection = (5PL^3)/(384EI)

where P is the load applied to the beam, L is the length of the beam, E is the Young's Modulus of the beam material, and I is the moment of inertia of the beam.

Substituting the given values into the equation, we get:

Maximum deflection = (5*P*L^3)/(384*200*10^9*39.9*10^6)

= (5*P*L^3)/(1536.3*10^15)

= (5*P*L^3)/1536.3*10^15 m

The maximum deflection of the simply supported beam, given the applied load P, the length of the beam L, the Young's Modulus E of the beam material, and the moment of inertia I, is equal to (5*P*L^3)/1536.3*10^15 m.

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Answer:

-2

Step-by-step explanation:

Given :

Solving :

Answer:

-2

Step-by-step explanation:

Given expression: -k - k

Combine like terms and simplify:

⇒ -k - k

⇒ -(k + k)

⇒ -(2k) = -2k

Determining the constant:

The constant of the term MUST be an integer. It CANNOT be a variable. In this case, the only constant that is a cooeficient of k is -2.

Thus, the cooeficient of -k−k is -2.

The total interest you will earn in 30 years is approximately $241.61.

To calculate the total interest earned in 30 years, we need to use the formula for compound interest:
A = P(1 + r/n)^(nt) - P
Where:
A = the future value of the investment
P = the principal amount (initial deposit)
r = the annual interest rate (in decimal form)
n = the number of times the interest is compounded per year
t = the number of years
In this case, the principal amount is $200, the annual interest rate is 3% (or 0.03 as a decimal), the interest is compounded monthly (so n = 12), and the time period is 30 years (so t = 30).
Plugging in these values into the formula:
A = 200(1 + 0.03/12)^(12*30) - 200
Now we can simplify and calculate:
A = 200(1.0025)^(360) - 200
A = 200(2.208040033) - 200
A ≈ 441.6080066 - 200
A ≈ 241.6080066

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Lavonne's tax liability will be $23,439.00.

We have,

Lavonne's income falls between $82,500 and $157,500, according to the tax schedule information.

To determine her tax liability, we need to find the amount over $82,500, which is:

= $125,000 - $82,500
= $42,500

Lavonne's tax liability will be the sum of the fixed amount plus the percentage of the amount over $82,500, which is:

= $14,089.00 + 22%($42,500)

= $14,089.00 + $9,350.00

= $23,439.00

Therefore,

Lavonne's tax liability will be $23,439.00.

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The height of the trapezoid is 13cm.

A trapezoid is a convex quadrilateral with at least one pair of parallel sides.

Area of a trapezoid =   0.5 x (sum of the lengths of the parallel sides) x height

Height = area / (0.5 x sum of lengths)

Sum of lengths = 23 + 17 = 40 cm

= 260 / (0.5 x 40) = 13 cm

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S1: m || n

S2: m∠2 ≅ m ∠3

R3: Corresponding angles postulate

R5: Linear pair angles are also supplementary angles

S7: m∠1 + m∠2 =180°

What is linear pair?

An angle pair that is linear is produced when two lines intersect at a single point. The terms "linear" and "rectangular" are used to describe angles that follow the intersection of two lines in a straight line. Total angles of a linear pair are always equal to 180°.

Given that line m and line n are parallel to each other.

Statement 1: m || n

Reason 1: Given

Corresponding angles postulate: When a transversal divides two parallel lines, the resulting angles are congruent.

Statement 2: m∠2 ≅ m ∠3

R2: Corresponding angles postulate

S3: m∠2 ≅ m ∠3

R3: Corresponding angles postulate

Statement 5: ∠1 is supplementary to ∠2.

Reason 5: The linear pair angles are also supplementary angles.

Statement 7: m∠1 + m∠2 = 180°

Reason 7: Substitution property of equality

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The final value is  0.67

(a) For a perpendicular rectangle without a common edge, the shape factor can be calculated using the formula:

f12 = min(w1, w2) / (h1 + h2)

where w1 and w2 are the widths of the rectangles and h1 and h2 are the heights.

In this case, the minimum width is 2 units, and the sum of the heights is 5 + 3 = 8 units. Therefore,

f12 = 2 / 8 = 0.25

(b) For parallel rectangles of unequal areas, the shape factor can be calculated using the formula:

f12 = (A2 / A1) * (h1 / h2)

where A1 and A2 are the areas of the rectangles and h1 and h2 are the heights.

In this case, the area of rectangle 1 is 24 square units (4 x 6) and the area of rectangle 2 is 16 square units (4 x 4). The heights are the same at 4 units. Therefore,

f12 = (16 / 24) * (4 / 4) = 0.67

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Answer:

4x-90(3)=50%m

Step-by-step explanation:

m= marbles (take note of my user name

Answer:

For each draw, the chances of getting a blue marble are 3 of 7; the chances of getting a red are 4 of 7.

The chances of drawing a blue on both draws is (3/7)^2 or 9/49, and the chances of getting red on both draws is (4/7)^2 or 16/49. But there are other possible outcomes which have to be considered to come to the correct answer.

There are 4 possible outcomes, as follows (although the chances of these outcomes are different):

Comb Chances

RR …….. 16/49

RB …….. 12/49

BR …….. 12/49

BB ……… 9/49

total …….. 49/49

So we can say that the chances of drawing red marbles on each draw are 16/49, and the chances of drawing blue ones on each draw are 9/49. But what about the chances of drawing either both red OR both blue?

I believe we can simply add the 2 probabilities together to come up with a probability of

Ken Warren, former Accountant at Various (1977-2016)

Answered February 6, 2020

Originally Answered: There is a bag filled with 3 blue and 4 red marbles. A marble is taken at random from the bag, the colour is noted and then it is replaced. Another marble is taken at random. What is the probability of getting 2 of the same colour?

Probability of two reds = 4/7 x 4/7 = 16/49 = 32.65%

Probability of two blues = 3/7 x 3/7 = 9/49

Probability of the same colour = 25 / 49 = 51.0 %

Step-by-step explanation:

bottom was cut off a bit its 4=b

Answer:

C. obtuse

Step-by-step explanation:

Obstuse is a triangle with ONE angle bigger than 90 degrees.

The triangle ΔBCD will be an acute triangle. Then the correct option is B.

A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.

The measure of the angle BCD is 70°. And the exterior angle of the angle BDC is 130°. The sum of the interior and exterior angles is 180°. Then the measure of the angle BDC will be

∠BDC + 130° = 180°

∠BDC = 50°

Then the measure of angle CBD will be given as,

∠CBD + ∠BDC + ∠DCB = 180°

∠CBD + 70° + 50° = 180°

∠CBD = 60°

The measure of all the angles of the triangle is less than 90°. Then the triangle ΔBCD will be an acute triangle. Then the correct option is B.

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The distance from Southville to Westfield is 95 miles.

How to find the distance?

Let's say that Portland is the origin of the coordinate axis, East is the positive x-axis and North is the positive y-axis.

Westfield is 76 mi due west of Portland, then Westfield's position is:

(76mi, 0mi).

Southville is 57 mi due south of Portland, then its position is:

(0mi, 76mi)

The distance between these two points is given by:

\(D=\sqrt{(76mi-0mi)^2+(0mi-(-57mi)^2}\) = 95 miles.

So the distance from Southville to Westfield is 95 miles.

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The geometric sequence with a fifth term of 1/3 and a constant ratio of 1/3 is Tn = (1/3)^-4 * (1/3)^n

The given parameters are:

Fifth term, T5 =  1/3

Constant ratio, r = 1/3

The nth term of a geometric sequence is

Tn = T1 * r^(n-1)

Substitute the known values in the above equation

1/3 = T1 * 1/3^4

Divide both sides by 1/3^4

T1 = (1/3)^-3

Substitute T1 = (1/3)^-3 in Tn = T1 * r^(n-1)

Tn = (1/3)^-3 * r^(n-1)

Substitute r = (1/3) in (1/3)^-3 * r^(n-1)

Tn = (1/3)^-3 * (1/3)^(n-1)

This gives

Tn = (1/3)^-4 * (1/3)^n

Hence, the geometric sequence with a fifth term of 1/3 and a constant ratio of 1/3 is Tn = (1/3)^-4 * (1/3)^n

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Answer:

C

Step-by-step explanation:

30 is the b in this equation which represents the number of miles she has already jogged. 6 represents the number of miles she jogs every day for x amount of days. x could be 5, in which case it would be represented as 6*5+30=60. But since we don't know what x is, it is just 6x+30.

Answer:

0 ≤ t ≤ 18

Step-by-step explanation:

The cost of renting the boat without any discount is $8 per hour. However, Leila has a discount coupon for $3 off, so the effective cost per hour would be $8 - $3 = $5.

Let's assume Leila rents the boat for t hours. The total cost of renting the boat for t hours would be $5 multiplied by t, which is 5t.

According to the problem, Leila wants to spend at most $93. Therefore, we can set up the following inequality:

5t ≤ 93

This inequality represents the condition that the total cost of renting the boat (5t) should be less than or equal to $93.

Simplifying the inequality:

5t ≤ 93

Dividing both sides by 5 (since the coefficient of t is 5):

t ≤ 93/5

t ≤ 18.6

Since we cannot rent the boat for a fraction of an hour, we can round down the decimal value to the nearest whole number:

t ≤ 18

0 ≤ t ≤ 18

Answer: 0≤t≤12

Step-by-step explanation:

(I’m not sure if it’s 5 dollars off per hour, or total, but here’s what I did!)

If Leila has a $3 coupon, than she can spend +$3 because when you get a coupon, you can spend more, so 93+3 is equal to 96, now we just divide by 8 (because a boat costs $8 per hour) and we get 96/8=12.

Then, in inequality form it’s t≤12, because she can rent the boat for at most 12 hours, you could also do 0≤t≤12, because you can’t rent it for a negative amount of time, but either works.

Answer:

37.7

Step-by-step explanation:

Answer:

C=2πr=2·π·6≈37.69911in

Answer:

(x+2)(2x+7)

Step-by-step explanation:

worked it out

Based on the scatter plot, the meaning of the slope in this scenario is that: The slope of the line of best fit is 0.25. Each time the shoe size increases by one, the height increases by 0.25 inches.

In this scenario, the woman's shoe size would be plotted on the x-axis of the scatter plot while her height would be plotted on the y-axis of the scatter plot.

From the Excel sheet, you should right click on a data point on the scatter plot, select format trend line (line of best fit) and then tick the box to display an equation for the line of best fit on the chart.

By critically observing the scatter plot (see attachment) which models the data in the given table, we can reasonably and logically deduce that an equation for the line of best fit is given by:

y = 0.25x + 66.6

In conclusion, the slope of this line is 0.25, which implies that when the shoe size is increased by one (1), the height is increased by 0.25 inches.

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