What is it then??? IDK WHAT I DID WRONG

Answer:

200 students vote in the election

Step-by-step explanation:

We know

120 votes = 60%

1% = 2 votes

To find how many students vote in the election, we take

2 x 100 = 200 votes

So, 200 students vote in the election

Answer:

x ≈ 27.5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Trigonometry

Step-by-step explanation:

Step 1: Define

Identify variables

Angle θ = 70°

Opposite Leg = x

Adjacent Leg = 10

Step 2: Solve for x

Answer:

She should get $23.6 in change

Step-by-step explanation:

You add the two items she bought which makes up $89.94, then you subtract the discount of $13.50, which leaves you with 76.44 to pay. If you pay with a 100 dollar bill, you subtract 76.44 from 100 in order to find out how much change you recieve.

Answer:

Step-by-step explanation:

100-((39.95+49.99)-13.50)=

100-(89.94-13.50)=

100-76.44=

23.56

You have to add the amount she is paying for the total then subtract that by the discount. Then subtract how much she gave them by the cost to get the change!

\([Hello,BrainlyUser]\)

Answer:

2n

Step-by-step explanation:

You pack sandwiches for a mountain hike with your friends.

Each [ meaning 1]  sandwich takes 2 slices of bread.

If each hiker eats one sandwich, and there are 'n' hikers

Thus, to find the number of breads used for 'n' hikers, we multiplied 2 by n

Hence, the expression will be 2n

[CloudBreeze]

1.  [1  2  3]   [x1]   [2]

 [0  1 -1]   [x2] = [8]

 [1  2  1]   [x3]   [4]

2. x3 equals to -11/3.

To solve for x3 using Cramer's rule, we need to find the determinant of the coefficient matrix and then form three additional matrices by replacing the third column of the coefficient matrix with the constants vector. The determinant of the coefficient matrix is:

| 1  2  3 |

| 0  1 -1 |

| 1  2  1 | = 1(1-4)-2(3-1)+3(2-2) = -3

Next, we form three matrices by replacing the third column of the coefficient matrix with the constants vector:

 [1  2  2]   [2]

 [0  1  8] = [8]

 [1  2  4]   [4]

 [1  2  3]   [2]

 [0  1 -1] = [8]

 [1  2  1]   [4]

 [1  2  3]   [2]

 [0  1 -1]   [8]

 [1  2  4]   [4]

The determinants of these matrices are:

| 1  2  2 |    | 1  2  3 |    | 1  2  3 |

| 0  1  8 | = -4| 0  1 -1 | = -3| 0  1 -1 | = 11

| 1  2  4 |    | 1  2  1 |    | 1  2  4 |

Therefore, x3 can be calculated as:

x3 = Det(B)/Det(A) = 11/-3 = -11/3

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Answer:

the final cost is $31.74

Answer:

16,17,18,19

Step-by-step explanation:

one guy guessed. probably using a calculator

another guy took the 4th root of 100,000 and rounded down a number

(a third way started like this

n*(n+1)*(n+2)(n+3)=100000

Answer:

Bree is correct

Step-by-step explanation:

Given

Area of rectangle;

\(A (x) = -6x^2 + 105x - 294\)

Joe's Result:

\(Length = -6x + 21\\Width = x - 4\)

Bree' Result

\(Length = -3x + 42\\Width = 2x - 7\)

Required

Determine whose result is correct and why.

To determine the correct result, we simply find the roots of the quadratic function

\(A (x) = -6x^2 + 105x - 294\)

Such that A(x) = 0

\(-6x^2 + 105x - 294 = 0\)

Start Factorization;

Expand

\(A (x) = -6x^2 + 105x - 294\)

Group the above expression in 2s

\(A(x) = (-6x^2 + 84x) + (21x - 294)\)

Factorize

\(A(x) =2x(-3x + 42) -7 (-3x + 42)\)

\(A(x) = (2x - 7)(-3x + 42)\)

Recall that; Area of a rectangle is calculated by;

\(A(x) = Length * Width\)

By comparison;

\(Length = 2x - 7\\Width = -3x + 42\)

At this point, we can conclude that Bree's computation is correct;

Reason

The product of (-3x + 42) and (2x – 7) will result in the given area of the rectangle

Answer:

3619.6cm^3

Step-by-step explanation:

Given data

Daimeter= 24cm

Radius= 12cm

The formula for finding the volume of the hemisphere is given below

V = 2/3*π*r³

Substitute

V= 2/3*3.142*12^3

V=  2/3*3.142*1728

V= 10858.752/3

V=3619.6cm^3

Hence the volume is 3619.6cm^3

List could be the one Akeem created is option D . 0.21  22%  1/4  0.35  3/8  38%.

Given:

Akeem created a list by correctly putting a group of fraction in percentage and decimals order from least to greatest value.

Least to greatest value:

Option D :

0.21  22%  1/4  0.35  3/8  38%

= 22 %

= 22 / 100

= 0.22

1/4 = 0.25

3/8 = 0.375

38 = 38 / 100

= 0.38

0.21 < 0.22 < 0.25 < 0.35 < 0.375 < 0.38.(least to greatest)

Hence Option D is correct.

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Full question:

Is in the image uploaded.

The least possible area of the room in square metres is Nlw, where N is the smallest integer that satisfies the equation LW = Nlw.

Let the length, width, and height of the square room be L, W, and H, respectively. Let the length and width of each rectangular slab be l and w, respectively. Then, the number of slabs required to cover the area of the room is given by:

Number of Slabs = (LW)/(lw)

Since we want to find the least possible area of the room, we can minimize LW subject to the constraint that the number of slabs is an integer. To do so, we can use the method of Lagrange multipliers:

We want to minimize LW subject to the constraint f(L,W) = (LW)/(lw) - N = 0, where N is a positive integer.

The Lagrangian function is then:

L(L,W,λ) = LW + λ[(LW)/(lw) - N]

Taking partial derivatives with respect to L, W, and λ and setting them to zero yields:

∂L/∂L = W + λW/l = 0

∂L/∂W = L + λL/w = 0

∂L/∂λ = (LW)/(lw) - N = 0

Solving these equations simultaneously, we get:

L = sqrt(N)l

W = sqrt(N)w

Therefore, the least possible area of the room is:

LW = Nlw

where N is the smallest integer that satisfies this equation.

In other words, the area of the room is a multiple of the area of each slab, and the least possible area of the room is obtained when the room dimensions are integer multiples of the slab dimensions.

Therefore, the least possible area of the room in square metres is Nlw, where N is the smallest integer that satisfies the equation LW = Nlw.

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Answer:

it represents 10 stars in the galaxies

Step-by-step explanation:

10 to the power of 12 would be 1,000,000,000,000, 10 to the power of 11 would be 100,000,000,000, and those two number divided equals simply 10.

Answer:

∠ 1 = 75°

Step-by-step explanation:

∠ 1 and 75° are corresponding angles and are congruent , then

∠ 1 = 75°

Answer: C. How many mountain ranges are in the U.S.

Step-by-step explanation:

A statistical question first of all has to have a quantitative response i.e., answers should be in numbers.

The only two questions here that would yield a numeric answer are options C and D.

Furthermore, a statistical question has variability in it which means that the answer is based on multiple observations not just one. The observations in option C are mountain ranges and as the question requires finding out details about multiple mountain ranges, this is a statistical question.

This is opposed to option D which addresses issues surrounding just one mountain.

Answer:

b

Step-by-step explanation:

my teacher went over the same on with me

Answer:

l:4

w: 3

l:4

w:1

Step-by-step explanation:

Hope this helps

The probability of the event B(n) as a recursive equation in terms of B(n-1) is:

$$B(n) = (1 - p)B(n - 1) + p(1 - B(n - 1))$$b)

Recursive Algorithm to calculate B(n) for arbitrary n and p:```
Function getProbabilty(n, p)
   if n == 0 then
       return 1
   else if n == 1 then
       return (1 - p)
   else
       return (1 - p)*get Probability (n - 1, p) + p*(1 - getProbability(n - 1, p))
   end if
End Function
```
The worst-case scenario is O(2^n).c) Dynamic Programming Algorithm to calculate B(n) for arbitrary n and p:```
Function getProbabilityDP(n, p)
   B[0] = 1
   B[1] = 1 - p
   for i = 2 to n do
       B[i] = (1 - p)*B[i - 1] + p*(1 - B[i - 1])
   end for
   return B[n]
End Function
```
The worst-case scenario is O(n).d) Yes, the DP approach is better than the recursive approach. The recursive approach has a worst-case time complexity of O(2^n), which is exponential and inefficient for large values of n. The DP approach, on the other hand, has a worst-case time complexity of O(n), which is linear and much more efficient.

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Based on the given information, we cannot prove that △EFG and △KLM are similar using the SSS or SAS similarity theorems. The correct answer is option D) No, they cannot be proven similar by SSS or SAS.

To determine if the triangles △EFG and △KLM can be proven similar using the SSS (Side-Side-Side) or SAS (Side-Angle-Side) similarity theorems, we need to compare their corresponding sides and angles.

SSS Similarity Theorem states that if the lengths of the corresponding sides of two triangles are proportional, then the triangles are similar.

SAS Similarity Theorem states that if two corresponding sides of two triangles are proportional, and the included angles are congruent, then the triangles are similar.

Let's examine the given information:

Side lengths of △EFG: EF = 18, EG = 24, FG = 15.

Side lengths of △KLM: KL = 6, KM = 8, LM = 5.

By comparing the side lengths, we can see that they are not proportional. For example, the ratio of EF/KL is 18/6 = 3, while the ratio of EG/KM is 24/8 = 3. Therefore, the corresponding sides of △EFG and △KLM are not proportional, which means we cannot establish similarity using the SSS theorem.

Now, let's consider the SAS theorem. For this, we also need to compare the included angles.

Angles of △EFG: ∠EFG, ∠EFG, ∠EGF.

Angles of △KLM: ∠KLM, ∠KML, ∠KLM.

The given information states that ∠EFG and ∠KLM are congruent. However, we don't have any information about the other angles. Without knowing the congruency of the remaining angles, we cannot establish similarity using the SAS theorem

Option D.

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Answer: Its C

Step-by-step explanation:

Answer:

Angle of A = 90 degree-62 degree =  28 degree.

Step-by-step explanation:

tan (62) = opposite / adjacent = 10 / a ---> a = 10/tan (62) = 10/ 1.88 = 5.319

cos (62) = a/c --->c = a/cos (62) = 5.319 / 0.47  = 5.3 / 0.47  = 11.3

or another way.

sin (62) = 10 /c  ---> c = 10/ sin (62) = 10 / 0.88 = 11.3

So Angle of A = 28 degree.

a = 5. 3

c =  11.3.

please give me brainliest. I hope it help.

Answer:

1. 10

2. 12.3

3. 34.5

and this will be the correct answer.

an equation showing a way to estimate to the neasrt inch the total rainfall for the two day 2.45 + 1.72 ≈ 4.2 inches

1. Add the two amounts of rainfall together: 2.45 + 1.72

2. Round the answer to the nearest inch: 4.2 inches

3. The equation to estimate the total rainfall for the two days is 2.45 + 1.72 ≈ 4.2 inches.

This equation provides a simple way to estimate the total rainfall for two days. By adding the two amounts of rainfall, we can then round the answer to the nearest inch to obtain the estimated total rainfall. This equation can be used to quickly and accurately estimate rainfall totals for any two-day period.

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Answer: 64

Step-by-step explanation:

(47 + 39) - 22

= 86 - 22

= 64

The specified value of n for trapezoidal rule, the midpoint rule, and simpson's rule is 10.36 , 10.72 and 10.52.

Trapezoidal Rule: In Calculus, “Trapezoidal Rule” is one of the important integration rules. The name trapezoidal is because when the area under the curve is evaluated, then the total area is divided into small trapezoids instead of rectangles. This rule is used for approximating the definite integrals where it uses the linear approximations of the functions.

The trapezoidal rule is mostly used in the numerical analysis process. To evaluate the definite integrals, we can also use Riemann Sums, where we use small rectangles to evaluate the area under the curve.

Midpoint rule : In mathematics, the midpoint rule, also known as the midpoint Riemann sum or midpoint method, is a method of estimating the integral of a function or the area under a curve by dividing the area into rectangles of equal width. The midpoint rule formula is. The midpoint method formula works by summing the areas of each of the rectangles to produce an estimate for the area under a curve.

Simpson's Rule: Simpson's rule is used to find the value of a definite integral (that is of the form b∫ₐ f(x) dx) by approximating the area under the graph of the function f(x). While using the Riemann sum, we calculate the area under a curve (a definite integral) by dividing the area under the curve into rectangles whereas while using Simpson's rule, we evaluate the area under a curve is by dividing the total area into parabolas. Simpson's rule is also known as Simpson's 1/3 rule (which is pronounced as Simpson's one-third rule).

Now,

a=1,b=4,Δx =(b-a)/n =3/6 =1/2

f(x)=4√(ln(x))

trapezoidal rule:

∫4√(ln(x)) dx =(Δx /2)[f(1)+2*[f(1.5)+f(2)+f(2.5)+f(3)+f(3.5)]+f(4)]

∫4√(ln(x)) dx =((1/2) /2)[4√(ln(1))  +2*[4√(ln(1.5)) +4√(ln(2)) +4√(ln(2.5)) +4√(ln(3)) +4√(ln(3.5))] +4√(ln(4))]

∫4√(ln(x)) dx =10.365336

midpoint rule :

∫4√(ln(x)) dx =(Δx)[f(1.25)+f(1.75)+f(2.25)+f(2.75)+f(3.25)+f(3.75)]]

∫4√(ln(x)) dx =(1/2)[4√(ln(1.25))  +4√(ln(1.75)) +4√(ln(2.25)) +4√(ln(2.75)) +4√(ln(3.25)) +4√(ln(3.75)) ]

∫4√(ln(x)) dx =10.724182

simpsons rule:

∫4√(ln(x)) dx =(Δx /3)[f(1)+4*f(1.5)+ 2*f(2)+ 4*f(2.5)+  2*f(3)+  4*f(3.5)]+f(4)]

∫4√(ln(x)) dx =((1/2) /3)[4√(ln(1))  +4*4√(ln(1.5)) +  2*4√(ln(2))  +4*4√(ln(2.5))  +2*4√(ln(3)) + 4*4√(ln(3.5)) +4√(ln(4))]

∫4√(ln(x)) dx =10.527905

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Answer:

the next three numbers should be 8, 4, 0

Step-by-step explanation:

it reduces by 4 each time

24 - 4 = 20

20 - 4 = 16

16 - 4 = 12

12 - 4 = 8

8 - 4 = 4

4 - 4 = 0

First term =a=24

common difference=d=20-24=-4

Formula

a_5

a_6

a_7

Triangle RST is rotated 180° about the origin, and then translated up 3 units.  Then , ΔRST ≅ ΔBAC

We know that  To rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y).

Thus, The coordinates of triangle RST becomes

R (1,1) → R'(-1,-1)

S (3,4) → S'(-3,-4)

T(-5,0) → T'(5,0)

Also ΔRST after rotation is translated up 3 units. , so we apply the rule (x,y)→(x,y+3)

R'(-1,-1)→R"(-1,-1+3)=R"(-1,2)→ B

S'(-3,-4) → S"(-3,-4+3) = R"(-3,-1) → A

C'(-5,0) → C"(-5,0+3) → C"(-5,3) → C

As rotation and translation both are rigid transformation that maps only congruent figures.

Therefore, ΔRST ≅ Δ BAC

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Step-by-step explanation:

let's just write it down in mathematical notation :

length = 2×width - 1

the perimeter is the way all around an object.

so, for a rectangle that is

2×length + 2×width

for our rectangle here

2×length + 2×width = 70

now we use the original identity of length via width and get

2×(2×width - 1) + 2×width = 70

4×width - 2 + 2×width = 70

6×width - 2 = 70

6×width = 72

width = 12

FYI

length = 2×width - 1 = 2×12 - 1 = 24 - 1 = 23

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