someone pls help me asapppp

7(x-2) - 2(x-3)

= 7x - 14 - 2x + 6   // Distribute the coefficients

= 5x - 8  // Combine like terms and simplify

Therefore, 7(x-2) - 2(x-3) simplifies to 5x - 8.

Answer:

7(x-2) - 2(x-3) simplifies to 5x - 8.

Step-by-step explanation:

To expand and simplify 7(x-2) - 2(x-3), we can use the distributive property and simplify the resulting expression.

7(x-2) - 2(x-3) = 7x - 14 - 2x + 6

Combining like terms, we get:

= (7x - 2x) + (-14 + 6)

= 5x - 8

Therefore, 7(x-2) - 2(x-3) simplifies to 5x - 8.

The verification of given segments in a triangle are parallel is as follow,

In triangle ABE, AC/ CE = BD/DE  are in proportion ⇒ CD || AB.

In triangle RVS, VT/TR = VU/US  are in proportion ⇒ UT || SR.

In the triangle ABE,

CD is the line segment divides AE and BE into equal parts.

AC = 1.5

CE = 1.5

BD = 1.5

DE = 1.5

AC/ CE = BD/DE

Line divides the two adjacent sides of a triangle are in proportion.

This implies ,

CD is parallel to AB.

In triangle RVS,

VT /TR = 90 /72

⇒VT /TR = 1.25

VU/US = 67.5/54

⇒VU/US = 1.25

This implies ,

VT/TR = VU/US are in proportion.

Hence , triangle proportionality theorem UT is parallel to RS.

Therefore, using triangle proportionality theorem in both the triangle that is,,

In triangle ABE , CD is parallel to  AB and in triangle RVS , UT || RS.

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Answer:

No

Step-by-step explanation:

No, y = 2x^3 + 5 is not a linear function. A linear function is a function that can be written in the form y = mx + b, where m and b are constants and x is the independent variable.

In the function y = 2x^3 + 5, we have a cubic term (x^3), which means that the function is not linear. The graph of a cubic function will have a curved shape, unlike a linear function, which will always be a straight line.

The surface area of the prism for the given dimensions is equal to option B. 180 square centimeters.

Surface area of the prism

= Area of two right triangles + Area of rectangle 1 + Area of rectangle 2 + Area of the rectangle3

In a Triangle ,

Base = 12cm

height = 5cm

Area of the triangle = ( 1/2 ) × base × height

                                 = (1/2)× 12 × 5

                                 = 30 cm²

Length of rectangle 1 = 12cm

Width of rectangle 1 = 4cm

Area of rectangle 1 = 12 × 4

                                = 48 cm²

Length of rectangle2= 13cm

Width of rectangle 2 = 4cm

Area of rectangle 2= 13 × 4

                                = 52 cm²

Length of rectangle 3 = 5cm

Width of rectangle 3 = 4cm

Area of rectangle 3 = 5 × 4

                                = 20 cm²

Surface area of the prism

= Area of two right triangles + Area of rectangle 1 + Area of rectangle 2 + Area of the rectangle3

Substitute the values of the area we have,

⇒ Surface area of the prism  = 2(30 ) + 48 + 52 + 20

⇒ Surface area of the prism  =  180 square centimeters

Therefore, the surface area of the prism is equal to option B. 180 square centimeters.

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The value of distance between two points on graph is,

⇒ d = √32 units

We have to given that;

The coordinates of two points are,

⇒ (9, - 4) and (5, -8)

We know that;

The distance between two points (x₁ , y₁) and (x₂, y₂) is,

⇒ d = √ (x₂ - x₁)² + (y₂ - y₁)²

Hence, The value of distance between two points on graph is,

⇒ d = √ (x₂ - x₁)² + (y₂ - y₁)²

⇒ d = √ (5 - 9)² + (- 8 - (-4))²

⇒ d = √ 16 + 16

⇒ d = √32

Thus, The value of distance between two points on graph is,

⇒ d = √32 units

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Let's call the two numbers we're trying to find x and y. We know that x + y = 12 and xy = 23. From the first equation, we can solve for one of the variables in terms of the other. So if we subtract x from both sides, we get y = 12 - x. Now we can substitute this expression for y into the second equation to get x(12 - x) = 23. Expanding this out, we get 12x - x^2 = 23. Rearranging, we get x^2 - 12x + 23 = 0. This quadratic equation can be factored as (x - 2)(x - 10) = 0. So either x = 2 and y = 10, or x = 10 and y = 2.

Answer:

The two numbers are 2 and 10.

Expressing each as a function of 15°, we have 6. tan165° = tan(150 + 15)° and 7. sin285° = sin(270 + 15)°

From the question, we have the following trigonometry function that can be used in our computation:

6. tan165°

7. sin285°

The above expressions are tangent and sine functions of 165 and 285 degrees

By mathematical expression, we have

165° = 150 + 15

285° = 270 + 15

This means that we can replace the expressions with 150 + 15 and 270 + 15

So in terms of 15 degrees, we have

6. tan165° = tan(150 + 15)° and 7. sin285° = sin(270 + 15)°

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Answer:

CD = 4 , AD = 6

Step-by-step explanation:

AC is an angle bisector of ∠ BAD and divides the opposite side from the angle into segments that are proportional to the other two sides, that is

[tex]\frac{BC}{CD}[/tex] = [tex]\frac{AB}{AD}[/tex] ( substitute values )

[tex]\frac{6}{y-1}[/tex] = [tex]\frac{9}{2y-4}[/tex] ( cross- multiply )

6(2y - 4) = 9(y - 1) ← distribute parenthesis

12y - 24 = 9y - 9 ( subtract 9y from both sides )

3y - 24 = - 9 ( add 24 to both sides )

3y = 15 ( divide both sides by 3 )

y = 5

Then

CD = y - 1 = 5 - 1 = 4

AD = 2y - 4 = 2(5) - 4 = 10 - 4 = 6

Answer:

x = 99

Step-by-step explanation:

Since x is on a straight line the adjacent angle and x must equal 180. We will call this adjacent angle B. The angle to the right of B also is on a straight line.

So,

180 - 123 = the inside angle             Simplify

57

The addition of a triangles interior angles equals 180

180 = 42 + 57 + B                              Move variables to one side

180 - (42 + 57) = B                             Simplify

81 = B

Now we can solve for X

180 - 81 = x                                        Simplify

99

Answer:

49

Step-by-step explanation:

[tex]\int\limits^{12}_0 {-0.002t^{2} +0.7t} \, dt \\=(-0.002\frac{{12}^{3} }{3} )+(0.7\frac{{12}^{2} }{2} )\\-(-0.002\frac{{0}^{3} }{3} )-(0.7\frac{{0}^{2} }{2} )\\\\=(-0.002\frac{{12}^{3} }{3} )+(0.7\frac{{12}^{2} }{2} )-0-0\\\\=49.248\\[/tex]

The simplification of the fractions given above through multiplication would be;

1.) 9 11/12

2.) 11 19/40

For question 1.)

2 5/6 × 3 2/4

Change the mixed fraction to single fraction;

= 17/6 × 14/4

= 17/6 × 7/2

= 119/12

= 9 11/12

For question 2.)

5 2/5 × 2 1/8

= 27/5 × 17/8

= 459/40

= 11 19/40

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The correct terms in the expression are,

⇒ 3x and 5x

We have to given that;

The quadratic equation is,

⇒ 15x² + x - 2 = (? - 1) (? + 2)

Now, We can simplify as;

⇒ 15x² + x - 2

⇒ 15x² + 6x - 5x - 2

⇒ 3x (5x + 2) - 1 (5x + 2)

⇒ (3x - 1) (5x + 2)

Thus, The correct terms in the expression are,

⇒ 3x and 5x

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Answer:

Step-by-step explanation:

Ronald's walking speed is 3 miles per hour, and he walks for 2 hours, so he covers 3 * 2 = 6 miles. In the next hour, he runs at a speed of 6 miles per hour, covering an additional 6 miles. Therefore, Ronald traveled a total of 6 + 6 = 12 miles.

The missing side lengths for triangle ABC are 4, 4√3, and 8.

Based on the given information, it seems that the triangle is a right-angled triangle with angles of 30°, 60°, and 90°. Let's find the missing side lengths for triangle ABC using the given lengths and angles.
Identify the triangle type.
Since we have angles of 30°, 60°, and 90°, we are working with a 30-60-90 right-angled triangle.
Determine the ratio of side lengths.
In a 30-60-90 triangle, the ratio of the sides is 1:√3:2.
Find the corresponding side lengths.
Using the given lengths and the 1:√3:2 ratio, we can determine the side lengths for triangle ABC:
- If the shortest side (opposite the 30° angle) is 4, then the other sides would be 4√3 (opposite the 60° angle) and 8 (hypotenuse, opposite the 90° angle).

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Answer:

The volume of the display case in cubic inches is 10,328 1/16 in.

The number of students are as follows:

To find the number of students who read comics and novels only:

Let novel and textbook = x

Let textbook and comics = y

Let comic and novel = z

y + x = 11 --- (1)

y + z = 10 --- (2)

x + z = 13 --- (3)

Make y subject of the formula in (2)

y = 10 - z

substitute for y in (1)

10 - z + x = 11 --- (4)

solve (3) and (4) simultaneously by addition

10 - z + x + x + z = 11 + 13

2x = 24 - 10

x = 7

y = 11 - 7

y = 3

z  = 13 - 7

z = 4

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The scale factor will be one-third which is 1/3. Then the correct option is A.

Given that:

Dimension of a small triangle, 6, 8, and 10

Dimension of a giant triangle, 18, 24, and 30

Dilation is the process of increasing the size of an item without affecting its form. The object's size can be raised or lowered depending on the scale factor. There is no effect of dilation on the angle.

The scale factor is calculated as,

SF = 6 / 18

SF = 1 / 3

The scale factor will be one-third which is 1/3. Then the correct option is A.

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Answer:

1/3

Step-by-step explanation:

I took the test!

Answer:

The greatest area enclosed by the fence will be a square. If the farmer has 60 metres of perimeter fencing, he can use 15 meters of fencing for each side of the square. This would give him an area of 15² = 225 m². Since he can keep one chicken for every square meter, he can keep 225 chickens. Therefore, the farmer should arrange his fence in the shape of a square to get the greatest area.

If the Raj’s bathtub is draining at rate of 1.5 gallons of water per-minute, then the range will be (c) all real numbers such that 0 ≤ y ≤ 40.

The "Range" of function is defined as the set of all possible "output-values'.

The amount of water remaining in the bathtub is decreasing as it drains, so the range of the function is bounded below by 0 (because we cannot have negative water in the bathtub) and above by 40 (the initial amount of water in the bathtub).

Looking at the given values of y, we can see that the value of "y" lies between 0 and 40.

Therefore, the correct option is (c).

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The given question is incomplete, the complete question is

Raj’s bathtub is clogged and is draining at a rate of 1.5 gallons of water per minute. The table shows that the amount of water remaining in the bathtub, y, is a function of the time in minutes, x, that it has been draining.

   x          y

   0         40

  0.5     39.25

    1        38.5  

   1.5       37.75

What is the range of this function?

(a) all real numbers such that y ≤ 40

(b) all real numbers such that y ≥ 0

(c) all real numbers such that 0 ≤ y ≤ 40

(d) all real numbers such that 37.75 ≤ y ≤ 40.

The slope of the tangent line is:

a = (df(x1)/dx)

The slope of the normal one is:

a' = -1/(df(x1)/dx)

For any function y = f(x), we define the slope of the tangent line at the point x as the derivative evaluated in x.

So if we want to find the slope of the tangent line at the point (x1, y1), we just need to differentiate and evaluate in x1, then the slope will be given by:

df(x1)/dx

And the normal slope is the slope of the perpendicular line, two slopes are perpendicular if the product is -1, then:

a*(df(x1)/dx) = -1

a = -1/(df(x1)/dx)

Where df/dx reffers to the derivative of f(x).

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The graph of this function will behave as (b) A graph of this function would slope downward, starting from a price of $100 dollars because the rate of change is less than 0 and the initial value is -10.

The demand function is given by d = 100 - 10p. This means that the quantity demanded (d) decreases as the price (p) increases.

The slope of the demand function is the rate of change of the quantity demanded with respect to the price. In this case, the slope is -10, which is negative. This indicates that as the price increases, the quantity demanded decreases.

The initial value of the demand function is 100, which represents the quantity demanded when the price is zero. This means that the demand function intersects the y-axis at (0, 100).

Therefore, the correct answer is (b) A graph of this function would slope downward, starting from a price of $100 dollars because the rate of change is less than 0 and the initial value is -10.

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Answer:

$8.92 each

Step-by-step explanation:

The coordinate of the point after transformation is: (3, -4)

The coordinate initially is given as (0, -4).

Moving one unit to the left means a deduction of 1 unit from the x coordinate to get:

(0 - 1, -4)

= (-1, -4)

Moving by 4 units to the right means an addition of 4 units to x coordinate to get:

(-1 + 4, -4)

= (3, -4)

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The length of cable in the coil that weighs 5 1/2 kilograms is 1/2 meter.

Let x be the length of cable in meters that weighs 5 1/2 kilograms.

Then, we can write:

1 meter / (75/1000) kilograms = x meters / 5.5 kilograms

Simplifying the left side, we get:

1 meter / (75/1000) kilograms = 1000 / 75 meters/kilogram

= 40/3 meters/kilogram

Substituting this into our proportion, we get:

40/3 meters/kilogram * x meters = 5.5 kilograms

Multiplying both sides by 3/40, we get:

x meters = (5.5 kilograms) * (3/40) * (40/3 meters/kilogram)

               = 1/2 meter

The length is 1/2 meter

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Answer:

He rented the bike for 3 hours

Step-by-step explanation:

they charge $10 for just the bike and an adittional of $8 per hour and Willie payed $34 so u subtract 10 from 34 it leaves u with 24 and u then divide by 8 and u get 3 which means that he rented the bike for 3 hours :)

The equivalent equation of  r sinθ = 10 in rectangular coordinates is y²  +   y⁴/x² - 100 = 0.

The rectangular coordinates is calculated from the polar equation as follows;

r sinθ = 10

the conversion from polar to rectangular coordinates;

r² = x² + y²

r = √(x² + y²) ----- (1)

y/x = tanθ  ------ (2)

r sinθ = 10

√(x² + y²)(y/x) = 10

(x² + y²)(y²/x²) = 100

y²  +   y⁴/x² = 100

y²  +   y⁴/x² - 100 = 0

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The estimated number of the 160 ducks that have blue marks would be 5 ducks.

Assuming none of the 50 people have received a considerable reward, it is probable that winning a small prize bears higher odds than claiming a more substantial one. Estimating, the probability of achieving a large prize may be considered half as likely to succeed as obtaining a smaller sum:

P ( large prize ) :

= 0.5 x P(small prize)

= 0.5 x 0.06 = 0.03

Number of ducks with blue marks (large prize):

= ( total number of ducks ) x P( large prize )

= 160 x 0.03

= 4.8

= 5 ducks

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The total length of the nylon rope that Jamie will use would be 15.3 feet of nylon rope.

Within this scenario specifically, one side of the right-angled triangle comprises the height of the tent (standing at 6.5-feet), and the other forms as the measure from the center of the tent to where Jaime stakes the ropes stretching outwards in another direction (with a calculated measure of 4-feet). Subsequently, we will refer to the extent of the nylon rope as R.

The Pythagorean theorem formula is:

R ² = 6.5 ² + 4 ²

R ² = 42. ²25 + 16

R ² = 58.25

R = 7. 63 ft

There are two ropes so the length would be :

= 7. 63 + 7. 63

= 15. 3 ft

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The Taylor series for f(x) = e^2x at x = 1 is option D. Σ2ⁿ e²ˣ/n! (x - 1)ⁿ

The Taylor series for a function f(x) centered at x = a is given by:

f(x) = f(a) + f'(a)(x-a)/1! + f''(a)(x-a)^2/2! + f'''(a)(x-a)^3/3! + ...

f'(a), f''(a), f'''(a), ... depict the first, second, third, and higher derivatives of f(x) evaluated at x = a.

In this case:

f(x) = e^(2x)

The first derivative is:

f'(x) = 2e^(2x)

The second derivative is:

f''(x) = 4e^(2x)

The third derivative is:

f'''(x) = 8e^(2x) etc.

Finding the Taylor series for f(x) = e^(2x) at x = 1, evaluate each derivative at x = 1:

f(1) = e^(2)

f'(1) = 2e^(2)

f''(1) = 4e^(2)

f'''(1) = 8e^(2) etc.

Plug these values into the Taylor series formula:

f(x) = f(1) + f'(1)(x-1)/1! + f''(1)(x-1)^2/2! + f'''(1)(x-1)^3/3! + ...

f(x) = e^(2) + 2e^(2)(x-1)/1! + 4e^(2)(x-1)^2/2! + 8e^(2)(x-1)^3/3! + ...

Simplify:

f(x) = e^(2) + 2e^(2)(x-1) + 2e^(2)(x-1)^2 + 4e^(2)(x-1)^3/3 + ...

Therefore, the Taylor series for f(x) = e^(2x) at x = 1 is: Σ2ⁿ e²ˣ/n! (x - 1)ⁿ which is option D.

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