hi, please help me, thanks:)​

Answer:

\(A = A_c-A_t=4\pi -8=4.5664cm^2\)

Step-by-step explanation:

The area of the shaded region can be calculated as the area of the semicircle less the area of the right triangle.

The area of the right triangle can be calculated as:

\(A_t=\frac{b*h}{2} =\frac{LM*MN}{2}\)

Where LM and MN have the same length because the internal angles are L=45°, M=90°, and N=45°. So the area is:

\(A_t=\frac{4*4}{2}=8\)

The diameter of the circle can be calculated using the Pythagorean theorem as:

\(D=\sqrt{(LM)^2+(MN)^2} =\sqrt{4^2+4^4}=4\sqrt{2}\)

So, the radius is \(r=2\sqrt{2}\)

Finally, the area of the semicircle is:

\(A_c=\frac{\pi*r^2 }{2}=\frac{\pi*(2\sqrt{2})^2 }{2}=4\pi\)

So, the area of the shaded region is:

\(A = A_c-A_t=4\pi -8=4.5664cm^2\)

Answer:

Option A : y = 40x - 85 is the correct answer.

Step-by-step explanation:

Given that:

Cost of purchasing supplies = $85

Cost charged for cleaning a pool = $40

Let,

x be the number of pools cleaned.

y be the profit

Profit = Cost of pools cleaned - purchase price of supplies

y = 40x - 85

Hence,

Option A : y = 40x - 85 is the correct answer.

The man got an 18.92% discount on the jacket during the sale if he pays $150, saving $35 on the normal price.

What was the percentage discount on the jacket purchased by the man?

The discount can be calculated as follows:

Discount = Normal price - Sale price

Discount = $35

Normal price = Sale price + Discount

Normal price = $150 + $35

Normal price = $185

So, the percentage discount is:

Percentage discount = (Discount / Normal price) x 100

Percentage discount = ($35 / $185) x 100

Percentage discount = 18.92%

Therefore, the man got a discount of 18.92% on the jacket.

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There must exist a vertex u in T such that the distance between u and v is at most (n-1)/2.

To prove the existence of a vertex u in tree T such that the distance between u and v is at most (n-1)/2, we can employ a contradiction argument. Assume that such a vertex u does not exist.

Since the number of vertices in T is odd, there must be at least one path from v to another vertex w such that the distance between v and w is greater than (n-1)/2.

Denote this path as P. Let x be the vertex on path P that is closest to v.

By assumption, the distance from x to v is greater than (n-1)/2. However, the remaining vertices on path P, excluding x, must have distances at least (n+1)/2 from v.

Therefore, the total number of vertices in T would be at least n + (n+1)/2 > n, which is a contradiction.

Hence, there must exist a vertex u in T such that the distance between u and v is at most (n-1)/2.

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Answer:

-108  

Step-by-step explanation:

ok, so if x=2 and y= -4 and your equation given in the question is -3(x-y)\(^2\)  

so we simply input our values of x and y given

-3(2-(-4))\(^2\)

word of advice to make your calculations and answers more precise always deal with numbers in bracket

I used a bracket for 4 because its carrying a minus/ negative sign and two negative multiplied gives a positive .

so, this will give you;

-3(2+4)\(^2\)= -3(6)\(^2\)

the square will only affect the number in the bracket

(6)\(^2\) = 6x6 =36

-3(36)= -3 x 36= -108

Answer:

ten to the third power

Step-by-step explanation:

Answer:

Ten cubed; Ten to the power of three, Ten to the third power

Step-by-step explanation:

The missing number in Sequence 2 is 780.

To find the missing number in Sequence 2, let's analyze the pattern:

In Sequence 1, the numbers increase by 1 each time: 126, 127, 128, 129, ...

In Sequence 2, the numbers seem to follow a pattern where each number is obtained by multiplying the corresponding number in Sequence 1 by a certain factor:

2 x 126 = 252

3 x 127 = 381

4 x 128 = 512

5 x 129 = 645

...

Looking at this pattern, we can see that the missing number in Sequence 2 should be:

6 x 130 = 780

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Answer:

1.002, -0.02

Step-by-step explanation:

Probabilities range between 0 and 1.

The number of whole cup of milk that Charlene would use for all 8 packages would be = 8 cups of whole milk.

A square is a type of quadrilateral that has four sides with four angle 90° at each edge.

The number of chocolate square mixture Charlene would use for the party = 8 packages.

The number of packages that require a cup of milk = 1

Therefore the number of whole cups of milk that would be used for the whole 8 packages would be = 8×1 = 8 cups of whole milk.

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Answer:

90°

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Answer:

0.545455

Step-by-step explanation:

turned it into a decimal

Answer:

y = 2.3x is a linear function.

Step-by-step explanation:

A linear function is a function with all of its terms to the first degree, in other words, none of its terms has an exponent. This means that when the function is plotted out, the resulting graph will be a line. The function, ( y = 2.3x) satisfies both of these requirements, hence it is linear.

Answer:

5/7

Step-by-step explanation:

ratio of boys to girls---> 2:5

ratio sum: 2+5=7

girls ratio =5/7

OR

total of people in 7th grade choir=28

hence, no of girls in 7th grade choir=5/7 × 28

=20

proportion of girls in choir= 20/28 = 5/7

The sum of the measures of the interior angles of a nonagon is 1260 degrees

The measure of each interior angle of a regular octagon is 135 degrees

A nonagon is a polygon with nine sides, and the formula to calculate the sum of the measures of the interior angles of a polygon with n sides is:

Sum of interior angles = (n-2) x 180 degrees

Therefore, the sum of the measures of the interior angles of a nonagon is:

Sum of interior angles = (9-2) x 180 degrees = 1260 degrees

An octagon is a polygon with eight sides, and the formula to calculate the measure of each interior angle of a regular polygon with n sides is:

Measure of each interior angle = (n-2) x 180 degrees / n

Therefore, the measure of each interior angle of a regular octagon is:

Measure of each interior angle = (8-2) x 180 degrees / 8 = 135 degrees

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It is a valid conclusion

Step-by-step explanation:

The girl which is correct between kate and her friend Margo is Margo.

The correct answer option is option B

If each friend gets the same number of pens;

Number of pens each friend get = Number of pens Kate has / Number of Kate's friends

= 63 / 9

= 7

Check:

Number of pens each friend get × Number of Kate's friends = Number of pens Kate has

7 × 9 = 63

Therefore, Kate's friend, Margo is correct.

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A material in the shape of a rectangular prism (cuboid) is given.

The volume and the surface area are given to be 180in³ and 258in², respectively. The cost of the material per square inch is given to be $0.05.

It is required to find the cost of the material.

To do this, since the cost per square inch is given, multiply the surface area by the cost per square inch:

The cost of the material is $12.9.

Step-by-step explanation:

26*2 1/2

26*3/2

13*3

39 is answer

make mae brain liest

Answer:

D) 14

Step-by-step explanation:

Absolute value |x| is defined as the distance x from 0.

Basically, whatever is in the absolute value sign cannot be negative

Answer:

What are you referring to?

Step-by-step explanation:

The compound inequality and the graph it represents is given by -5x +9<- 6 or-3x + 1 ≥7 - Third graph. -6x>-18 and 1 ≤ 2x + 5 - Second graph. - 16 ≤ 6x + 2 < 14 - first graph.

When two inequalities are coupled with either "and" or "or," the result is a compound inequality. The steps for solving each of the compound inequalities are the same as for a normal inequality, but when combining the results, it makes a difference whether "and" or "or" is used to join the two inequalities together.

The given compound inequality is:

-5x +9<- 6 or-3x + 1 ≥7

-5x < -6 - 9 or -3x ≥ 7 - 1

x < -15/-5 or x ≥ 6 / -3

x < 3 or x ≥ -3

The third graph represents this inequality.

-6x>-18 and 1 ≤ 2x + 5

x > 3 and 1 - 5 ≤ 2x

x > 3 and -2 ≤ x

The second graph represents this inequality.

- 16 ≤ 6x + 2 < 14

-16 - 2 ≤ 6x < 14 - 2

- 18 ≤ 6x < 12

-3 ≤ x < 2

The first graph represents this inequality.

Hence, the compound inequality and the graph it represents is given by -5x +9<- 6 or-3x + 1 ≥7 - Third graph. -6x>-18 and 1 ≤ 2x + 5 - Second graph. - 16 ≤ 6x + 2 < 14 - first graph.

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The correct question is:

\(\qquad \qquad \textit{inverse proportional variation} \\\\ \textit{\underline{y} varies inversely with \underline{x}} ~\hspace{6em} \stackrel{\textit{constant of variation}}{y=\cfrac{\stackrel{\downarrow }{k}}{x}~\hfill } \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{\underline{y} is inversely proportional to the square root of \underline{x}}}{y = \cfrac{k}{\sqrt{x}}}~\hfill \stackrel{\textit{we also know that}}{ \begin{cases} y = 61\\ x = 9 \end{cases}}\)

\(61=\cfrac{k}{\sqrt{9}}\implies 61=\cfrac{k}{3}\implies 183=k~\hfill \boxed{y = \cfrac{183}{\sqrt{x}}} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{when x = 81, what is "y"?}}{ y = \cfrac{183}{\sqrt{81}}\implies y=\cfrac{183}{9}}\implies y = \cfrac{61}{3}\implies y = 20.\overline{3}\implies y = \stackrel{\textit{rounded up}}{20.33}\)

Answer:

n = 36

Step-by-step explanation:

18 = n - 18

add 18 to both sides

36 = n

n = 36

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Answer:

36

Step-by-step explanation:

18 + 18 = 36

36 - 18 = 18

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The most appropriate choice for expectation will be given by-

Plan B has a higher payout

What is expectation?

At first it is important to know about probability of an event.

Probability gives us the information about how likely an event is going to occur

Probability is calculated by Number of favourable outcomes divided by the total number of outcomes.

Probality of any event is greater than or equal to zero and less than or equal to 1.

Probability of sure event is 1 and probability of unsure event is 0.

Here,

For planout A

Expected value of plan A = \(-5000 \times 0.67 + 55000 \times 0.09 + 95000 \times 0.24\\\)

                                          = $24400

For planout B

Expected value of plan A = \(-30000 \times 0.15 + 35000 \times 0.44 + 65000 \times 0.41\\\)

                                          = $37550

Plan B has a higher payout

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The rear windshield wiper of a car rotated 120 degrees, as shown in the figure. The area cleared by the wiper blade is approximately 205.875 square inches.

The problem states that a car’s rear windshield wiper rotates 120 degrees, as shown in the figure. Our aim is to find the area cleared by the wiper.

The wiper's arm is represented by a line segment and has a length of 14 inches.

The wiper's blade is perpendicular to the arm and has a length of 25 inches.

Angular degree measure indicates how far around a central point an object has traveled, relative to a complete circle. A full circle is 360 degrees, and 120 degrees is a third of that.

As a result, the area cleared by the wiper blade is the sector of a circle with radius 25 inches and central angle 120 degrees.

The formula for calculating the area of a sector of a circle is: A = (θ/360)πr², where A is the area of the sector, θ is the central angle of the sector, π is the mathematical constant pi (3.14), and r is the radius of the circle.

In this situation, the sector's central angle θ is 120 degrees, the radius r is 25 inches, and π is a constant of 3.14.A = (120/360) x 3.14 x 25²= 0.33 x 3.14 x 625= 205.875 square inches, rounded to the nearest thousandth.

Therefore, the area cleared by the wiper blade is approximately 205.875 square inches.

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Answer:

62.5%

Step-by-step explanation:

75/120 x 100

= 62.5%

Answer:

\(Area = 25*(10 + w) + 13.5(10 + w)\)

Step-by-step explanation:

Given

Stores and Parking Lots

Required

Determine the area as a sum of area of stores and area of parking lots

First, calculate the area of the stores

The dimension of store A is: 25 by 10

The dimension of store B is: 25 by w

The dimension of stores A and B (as an entity) is: 25 by 10 + w

The area is then calculated as:

\(Area = 25 * (10 + w)\) -------- A1

Next, calculate the area of the parking lots

The dimension of parking lot A is: 13.5 by 10

The dimension of parking lot B is: 13.5 by w

The dimension of parking lots A and B (as an entity) is: 13.5 by 10 + w

The area is then calculated as:

\(Area = 13.5 * (10 + w)\) -------- A2

The area of the shopping center is then calculated as:

\(Area = A_1 + A_2\)

\(Area = 25*(10 + w) + 13.5(10 + w)\)

Using translation concepts, it is found that:

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

\((-5,-4) \rightarrow (-5 - 3, -4 + 2) = (-8, -2)\)

\((1,7) \rightarrow (1 - 3, 7 + 2) = (-2, 9)\)

Thus:

B' is: (-8, -2).

C' is: (-2, 9).

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