I NEED HELP ASAP I’ll give Brainliest ,THANK YOU
Which statement about y = x ^ 2 + 7x - 30 is true?

Answer:

10 outcomes

Step-by-step explanation:

if 2 coins were selected with replacement=10×10=100

number of outcomes if 2 coins were selected without replacement=10×9=90

Finally, 100-90= 10 outcomes!

To find the upper quartile, we first need to arrange the data in ascending order:

17, 17, 18, 18, 19, 19, 21, 21, 21, 22, 23, 23, 24, 25

The upper quartile (Q3) is the median of the upper half of the data set. To find it, we need to identify the median of the upper half, which includes the values:

22, 23, 23, 24, 25

The median of this data set can be found by taking the average of the two middle values:

(23 + 24) / 2 = 23.5

Therefore, the upper quartile of the data set is 23.5°C.

Answer:

To find the upper quartile, we first need to find the median (Q2) of the data set:

Arrange the data set in ascending order:

17, 17, 18, 18, 19, 19, 21, 21, 21, 22, 23, 23, 24, 25

The median is the middle value, which is 21 in this case.

Next, we need to find the median of the upper half of the data set (values greater than 21):

22, 23, 23, 24, 25

The median of this subset is 23.

Therefore, the upper quartile is 23.

Step-by-step explanation:

Answer:

RV = 49 units

Step-by-step explanation:

in parallelogram RSTU , the diagonals bisect each other, then

TV = RV , that is

3y - 17 = y + 27 ( subtract y from both sides )

2y - 17 = 27 ( add 17 to both sides )

2y = 44 ( divide both sides by 2 )

y = 22

Then

RV = y + 27 = 22 + 27 = 49 units

Answer:

1/3x^11

Step-by-step explanation:

1/3x^11 is the answer

Answer:

x = 2; y = 10

Step-by-step explanation:

y = 5x

2x + 3y = 34

You have a system of equations. Since the first equation is already solved for y, we can easily use the substitution method. Substitute 5x for y in the second equation.

2x + 3y = 34

2x + 3(5x) = 34

2x + 15x = 34

17x = 34

x = 2

Now substitute 2 for x in the first equation.

y = 5x

y = 5(2)

y = 10

Solution: x = 2; y = 10

Answer:

\(Volume = 643.0\ in^3\)

Step-by-step explanation:

Given

Dimension: 4.75in, 4.75in and 28.5in

[The complete dimension is missing from the question]

Required

Calculate the volume

The volume is calculated as thus:

\(Volume = 4.75in * 4.75in * 28.5in\)

\(Volume = 643.03125in^3\)

\(Volume = 643.0\ in^3\) --- approximated

Step-by-step explanation:

Notice that in n(n + 1)(n + 2)(n + 3):

Exactly 2 of them are multiples of 2,

At least 1 of them is a multiple of 3, and

At least 1 of them is a multiple of 4.

Since one of the multiples of 2 is already counted in the multiple of 4 we can ignore it.

Hence we have 2 * 3 * 4 = 24.

The greater positive integer that must be a factor is 24.

Answer:

16.2

Step-by-step explanation:

15^2+6^2 = 261

square root of that is 16.15549442

Answer:

90cm

Step-by-step explanation:

15^2 + 6^2 = c^2

c^2 = 8100

c = 90

HOPE THIS HELPS!!!

The values are:b = -2i - j + 6k, 2a = 2i + 10j - 8k, 3b = -6i - 3j + 18k, |a| = sqrt(42), |a - b| = sqrt(145).



To find the values of b, 2a, 3b, |a|, and |a - b|, substitute the given values of a and b into the equations.

Given:a = i + 5j - 4k

b = -2i - j + 6k

1. b:

Substituting the values of b:b = -2i - j + 6k

2. 2a:

Multiply each component of a by 2:2a = 2(i + 5j - 4k)

  = 2i + 10j - 8k

3. 3b:

Multiply each component of b by 3:3b = 3(-2i - j + 6k)

  = -6i - 3j + 18k

4. |a|:

Calculate the magnitude of a using the formula:|a| = sqrt((i)^2 + (5j)^2 + (-4k)^2)

   = sqrt(1 + 25 + 16)

   = sqrt(42)

5. |a - b|:

Calculate the magnitude of the vector (a - b):|a - b| = |(i + 5j - 4k) - (-2i - j + 6k)|

        = |3i + 6j - 10k|

        = sqrt((3)^2 + (6)^2 + (-10)^2)

        = sqrt(9 + 36 + 100)

        = sqrt(145)

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If he works for 50 hours, then he would win $1,875 for 50 hours of work. The difference quotient is equal to \(2^x\).

Function is a type of relation, or rule, that maps one input to specific single output.

We have been given a function as; f (x) = 49x² – 200

Where f(x) is the amount of money that he wins for decorating x rooms.

g(x) = \((1/7)^x\)

Here, the number of rooms that he decorates in x hours.

So the revenue as a function of time can be given by evaluating f(x) in g(x).

A) we get;

f( g(x)) = 49\((1/7)^x\)² – 200 = x² - 200

r(x) =  x² - 200

If he works for 50 hours, we need to replace x by 50 in the revenue equation:

r(50) = 50^2 - 200 = 1,875

thus he would win $1,875 for 50 hours of work.

The difference quotient is equal to \(2^x\).

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Answer:

Part A: r(x)=x^2-200, the designer will make $2300

Part B:If the designer works 50 hours, they will earn $2300

Part C: The difference of quotient is r(x)= 2^x

Step-by-step explanation:

The above answer is wrong, the answer is for a similar equation!!

I would suggest using QuickMath to break down equations step by step, hope this helps. :)

Answer:

I believe that 4 is 62 and 5 is 70

Step-by-step explanation:

The predicted values of A, B, C, and D are: A = 595B = -0.5C = 600D = $6350, therefore, the correct option is IC.

Given,

Mean of X = 600

Standard deviation of X = 10

Mean of Y = $5000

Standard deviation of Y = 1000

Correlation r= 0.9

Future value of X = 595

Z score of X = (X- Mean of X) / Standard deviation of X= (595-600) / 10 = -0.5

Using the formula, Predicted y = average of y+ r* (Z score of X)* standard deviation of y

Predicted y = $5000 + 0.9 * (-0.5) * 1000 = $4750

The predicted value of Y for X = 595 is $4750.

Now, to find the values of A, B, C, and D; we need to calculate the Z score of X = 615 and find the corresponding predicted value of Y.

Z score of X = (X- Mean of X) / Standard deviation of X= (615-600) / 10 = 1.5

Predicted y = average of y+ r* (Z score of X)* standard deviation of y

Predicted y = $5000 + 0.9 * (1.5) * 1000 = $6350

The predicted value of Y for X = 615 is $6350.

Hence, the values of A, B, C, and D are: A = 595B = -0.5C = 600D = $6350

Therefore, the correct option is IC.

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The bases of a pentagonal prism are two identical pentagons. It features five rectangle-shaped faces. The prism has ten vertices and fifteen edges.

A pentagonal prism is a prism with five rectangular sides and two top and bottom pentagonal bases. With 7 faces, 10 vertices, and 15 edges, it is a particular form of heptahedron. A pentagonal prism can have five sides due to its pentagonal bases. The pentagonal prism is also called Five-sided polygon prism in other name.

The pentagonal prism is a prism with five rectangular sides and two pentagonal base

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Answer:

The bases of a pentagonal prism are two identical pentagons. It features five rectangle-shaped faces. The prism has ten vertices and fifteen edges.

Step-by-step explanation:

hope this helped!

You didn't include the equations.

Answer:

b.

give me a brainlist

Step-by-step explanation:

Find the area of the room by multiplying the length by the width:

Area of room = 20 x 12 = 240 square feet.

Find the area of the tile: 2x 2 = 4 square feet.

To find the number of tiles divide the area of the room by the area of a tile:

240/4 = 60

They will need 60 tiles.

Answer:

120

Step-by-step explanation:

20*12=240

240/2=120

Answer:

2(4)-3+5

Step-by-step explanation:

8-3+5

13-3

10

Answer:

i would say a

Step-by-step explanation:

Answer:

components: {16,11}, distance: 194.16 yards

Step-by-step explanation:

to find the length of a point to another point that has different y and x points you use the pythagorean theorem (a^2 + b^2 = c^2)

16 and 11 are the distances from her house

16^2 + 11^2 = c^2

c^2 = 377

c = 19.416...

but we dont stop here

we have to convert this to yards by multiplying it by ten

19.416 * 10 = 194.16 yards

Answer:

B

Step-by-step explanation:

Just did the test

Given ages represent the consecutive integers  and sum of  Scarlett's age and five times Nasim age is 185 , then Scarlett age is equal to 30 years.

As given in the question,

Age represents the consecutive integers and Scarlett age is less than Nasim's age.

Let 'x' represent the age of Scarlett

And ' x + 1' represents the age of Nasim

As per the given condition of their ages we have,

x + 5 ( x + 1 ) = 185

⇒ x + 5x + 5 = 185

⇒ 6x + 5 = 185

⇒ 6x = 185 - 5

⇒ 6x = 180

⇒ x = 180 / 6

⇒ x = 30 years

Therefore, for the given ages represent the consecutive integers  and sum of  Scarlett's age and five times Nasim age is 185 , then Scarlett age is equal to 30 years.

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The statements that describe a triangular prism are:

A triangular prism is a three-dimensional object that is made up of one base that has the shape of a triangle and three lateral sides that have the shape of a rectangle. A triangular prism has 5 faces, 9 edges and 6 vertices.

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Step-by-step explanation:

There are 2 muffins in each box

Answer:

i may be wroung but it should be 90

Step-by-step explanation:

Answer:

x=35

Step-by-step explanation:

The sum of angles in a triangle is equal to 180. In the triangle given, we have to add all the angles to find x.

So,

\(3x+x+40=180\)

to find x, we must isolate it:

combine common terms:

\(4x+40=180\)

subtract the 40 to both sides:

\(4x+40-40=180-40\)

divide by three to isolate the variable:

\(4x/4=140/4\)

and the resulting would be our x:

\(x=35\)

to check if our answers make sense, substitute.

\(3(35)+35+40=180\)

solve:

\(180=180\)

that's it! hope it helps :)

Answer:

C

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k ) are the coordinates of the vertex and a is a multiplier

y = (x + 7)² - 9 ← is in vertex form

with h = - 7 and k = - 9

vertex = (- 7, - 9 )

Its, 4 + 6 + 10 + 1 = 21

Answer:

b = 24

d = 10

f = 32

g = 34

h = 46

Step-by-step explanation:

From the given table we find that students who are in band = 48

So 24 + b = 48

b = 48 - 24

b = 24

Total students who do not play sports = h

And h = students in band + students not in band

h = b + 22

h = 24 + 22 = 46

h = 46

Total students who play sports and who do not play sports = 80

g + h = 80

g + 46 = 80

g = 80 - 46 = 34

g = 34

Total students who are not in band and not in band = 80

48 + f = 80

f = 80 - 48

f = 32

Students who are not in Band but either play sports or do not play sports = f

d + 22 = f

d + 22 = 32

d = 32 - 22 = 10

d = 10

Answer:

width = 9 inches , length = 12 inches

Step-by-step explanation:

let width be w then length = w + 3

area (A) of a rectangle is calculated as

A = length × width

  = (w + 3) × w = w(w + 3) = w² + 3w

given A = 108 , then

w² + 3w = 108 ( subtract 108 from both sides )

w² + 3w - 108 = 0 ← in standard form

(w + 12)(w - 9) = 0 ← in factored form

equate each factor to zero and solve for w

w + 12 = 0 ⇒ w = - 12

w - 9 = 0 ⇒ w = 9

however, w > 0 , so w = 9 and w + 3 = 9 + 3 = 12

then width = 9 inches and length = 12 inches

The particular solution that satisfies the differential equation and the initial condition f(0) = a is: f(x) = -sin(x) + C1x + a.

To find the particular solution that satisfies the differential equation f''(x) = sin(x) and an initial condition, we need to integrate the equation twice and apply the initial condition.

1. First Integration:

Integrating the differential equation f''(x) = sin(x) with respect to x once gives us:

f'(x) = -cos(x) + C1

where C1 is the constant of integration.

2. Second Integration:

Integrating f'(x) = -cos(x) + C1 with respect to x again gives us:

f(x) = -sin(x) + C1x + C2

where C2 is another constant of integration.

3. Applying the Initial Condition:

To apply the initial condition, we need to use the given information about the problem. Let's say the initial condition is given as f(0) = a, where 'a' is a specific value.

Substituting x = 0 and f(x) = a into the equation, we get:

a = -sin(0) + C1(0) + C2

a = 0 + 0 + C2

C2 = a

Therefore, the particular solution that satisfies the differential equation and the initial condition f(0) = a is:

f(x) = -sin(x) + C1x + a

In this particular case, the initial condition f(0) = a determines the value of the constant C2, which becomes C2 = a. The resulting particular solution incorporates the constant C1 from the first integration and the constant a from the initial condition.

Note that without a specific initial condition or boundary condition, the constants C1 and C2 remain arbitrary and can be adjusted to fit different situations or additional information if provided.

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Answer:

The answer is D.

Step-by-step explanation:

Answer:

5 would be the answer.

Step-by-step explanation:

13 divided by 3(weeks) = 4.3

4.3 x 5 = 21.

= 5.

(e) The complex number 5+2i in exponential form is (\sqrt{29}e^{i\text{tan}^{-1}\left(\frac{2}{5}\right)}\).
(f) The new period is \(0.31\sqrt{\frac{m}{1.6k}}\) when the spring constant is increased by 60%.

(e) To convert a complex number to exponential form, we need to determine its magnitude and argument. For the complex number 5+2i, the magnitude is given by the formula \(A = \sqrt{{\text{Re}}^2 + {\text{Im}}^2}\) where Re and Im represent the real and imaginary parts, respectively. In this case, the magnitude is \(\sqrt{5^2 + 2^2} = \sqrt{29}\).

The argument, \(\theta\), can be found using the formula \(\theta = \text{tan}^{-1}\left(\frac{{\text{Im}}}{{\text{Re}}}\right)\). For 5+2i, the argument is \(\text{tan}^{-1}\left(\frac{2}{5}\right)\).

Thus, the complex number 5+2i in exponential form is \(Ae^{i\theta} = \sqrt{29}e^{i\text{tan}^{-1}\left(\frac{2}{5}\right)}\).



(f) The period of a spring-mass system is determined by the mass and the spring constant. If the spring constant is increased by 60%, we can calculate the new period using the formula \(T' = T\sqrt{\frac{m}{k'}}\).

Given the original period \(T = 0.31\) seconds and an increase in the spring constant by 60%, we have \(k' = 1.6k\) where \(k\) is the original spring constant.

Substituting the values into the formula, the new period is \(T' = 0.31\sqrt{\frac{m}{1.6k}}\).

Increasing the spring constant causes the spring to become stiffer, resulting in a shorter period. The new period, \(T'\), will be less than the original period \(T\) due to the increased stiffness of the spring.

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Answer:

x=(1+sqrt(61))/6=1.468

Step-by-step explanation: