help me with this problem

Answer: First option. y-15=5(x-3)

Solution:

We can take any pair of points of the table. For example:

P1=(3, 15)=(x1, y1)→x1=3, y1=15

P2=(5, 25)=(x2,y2)→x2=5, y2=25

And we can find the slope m using the following formula:

m=(y2-y1)/(x2-x1)

m=(25-15)/(5-3)

m=(10)/(2)

m=5

Now we can apply the point-slope formula to find the equation of the right line:

y-y1=m(x-x1)

Replacing y1=15, m=5, and x1=3

y-15=5(x-3)

The equation in point-slope form that represents the plant's growth over time would be 'y - 9 = 3x', given that the y-intercept is 9 and the slope is 3.

Based on the information given, it is clear that the y-intercept where the line intersects the y-axis is 9 and the slope of the line is 3. We know that y stands for the height of the plant and x for time in months. Using these values, the equation in point-slope form, which is normally written as y - y1 = m(x - x1) where m is the slope and (x1, y1) is a given point on the line, can be simplified assuming that x1=0 and y1 is our y-intercept which is 9.

Therefore, the equation of the line that represents the growth of the plant over time in point-slope form would be y - 9 = 3x.

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(d)

This equation does not factor, but we can solve using the quadratic formula

x = ( - b ± √(b² - 4ac) )/ 2a

given the equation in standard form : ax² + bx + c = 0

divide through by - 1, to obtain

x² + 7x + 2 = 0

with a = 1, b = 7 and c = 2, then

x = ( - 7 ± √(49 - 8) ) / 2

  = ( - 7 ± √41 ) / 2

x = - [tex]\frac{7}{2}[/tex] ± √41 / 2 → (d)

4!(7 – 4)! is equivalent to (4!)(3)!

3! = 3*2*1 = 6, and 4! = 4(6) = 24.

Thus, 4!(7 – 4)! = 24(6) = 144

21.6 units

Calculate the length of the 2 inclined sides using the distance formula

d = √(x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 3, 3 ) and (x₂, y₂ ) = (3, 4 )

d = √(3 + 3 )² + (4 - 3)² = √(36 + 1 ) = √37

repeat for (x₁, y₁ ) = (- 3, 3 ) and (x₂, y₂ ) = (3, - 3 )

d = √(3 + 3 )² + (- 3 - 3 )² = √(36 + 36 ) = √72

the vertical side has a length of 7 units

perimeter = √37 + √72 + 7 = 21.6 ( nearest tenth of a unit )

The perimeter of the triangle shown on the coordinate plane is 15.5 units

The perimeter of the triangle is the sum of the lengths of its three sides. To find the lengths of the sides, we can use the distance formula:

distance = sqrt((x2 - x1)^2 + (y2 - y1)^2)

The coordinates of the three points are:

A = (0, 0)

B = (10, 0)

C = (5, 10)

The length of side AB is:

distance from A to B = sqrt((10 - 0)^2 + (0 - 0)^2) = sqrt(10^2) = 10

The length of side BC is:

distance from B to C = sqrt((5 - 10)^2 + (10 - 0)^2) = sqrt((-5)^2 + 10^2) = sqrt(125) = 5 \sqrt{5}

The length of side AC is:

distance from A to C = sqrt((5 - 0)^2 + (10 - 0)^2) = sqrt(5^2 + 10^2) = sqrt(125) = 5 \sqrt{5}

Therefore, the perimeter of the triangle is:

perimeter = AB + BC + AC = 10 + 5 \sqrt{5} + 5 \sqrt{5} = 10 + 10 \sqrt{5}

To the nearest tenth of a unit, the perimeter of the triangle is 15.5 units.

Therefore, the answer is 15.5 units.

For such more question on perimeter

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Answer:

24.75 i just had this question got it wrong but there's the correct answer

Answer:

Evaluate from left to right

Evaluate using order of operations

Step-by-step explanation:

To evaluate any complex expression that contains addition, subtraction , multiply or divide, exponents , parenthesis etc we use order of operation.

Order of operation is PEMDAS

To evaluate , first we simplify the parenthesis part and then exponents

Then do the multiplication and division from left to right.

Finally we do addition and subtraction from left to right

So the rules for evaluating a complex expression is

Evaluate from left to right

Evaluate using order of operations

C.) Dilation changes the size

Opposite sides of a parallelogram are equal lengths, so ...

... AB = CD

... 6x +30 = 2y -10

and

... BC = AD

... 2x -5 = y -35

_____

The equations can be put in standard form to get

... 3x -y = -20

... 2x -y = -30

Subtracting the second from the first, we get

... x = 10

Solving for y, we have

... y = 2x+30 = 2·10 +30 = 50

The values of x and y are x=10, y=50.

_____

AB = 6x+30 = 90

BC = 2x-5 = 15

Distributive property: ⇒ a(b+c)=ab+ac

First you had to rewrite down as the nine and its should be three times three is equal to nine. Then you rewrite down as the twenty-seven and its should be nine times three is equal to twenty-seven. Next, you rewrite down as fifteen and its should be five times three is equal to fifteen.

And it gave us ⇒ [tex]=5*3y+9*3-3*3x[/tex].

Then you had to factor out by the common term of three.

And it gave us ⇒ [tex]3(5y+9-3x)[/tex]

Final answer ⇒ [tex]\boxed{=3(5y+9-3x)}[/tex]

Hope this helps!

And thank you for posting your question at here on brainly, and have a great day.

-Charlie

All 3 terms have a common factor 3 which we can take out

=3 ( 9 - 3x + 5y )

169+354=523 I think thats what you were asking

Answer:

22.9 m

Step-by-step explanation:

Circumference = π × diameter

Using a calculator to evaluate 7.3π, we get 22.933626...

Rounding this to the nearest tenth gives 22.9. Units are meters.

The circumference of a circle with a diameter of 7.3m is approximately 22.9 meters.

The circumference of a circle is calculated by using the formula C = πd, where 'C' is the circumference and 'd' is the diameter. Given that the diameter of the circle is 7.3 m, you can plug this value into the formula to find the circumference.

So, C = π × 7.3

To find the circumference of a circle with diameter 7.3m, we can use the formula C = π x d, where C is the circumference and d is the diameter. Plugging in the given value, we get C = 3.14 x 7.3 = 22.922. Rounding to the nearest tenth, the circumference is approximately 22.9 meters.

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Answer:

1 - Circle      2 - Concentric          3 - Congruent       4 - Diameter       5 - Radius

Step-by-step explanation:

1. the set of all points in a plane that are at a given distance from a given point in the plane

Circle

2. two or more circles that lie in the same plane and have the same center

Concentric Circles

3. circles that have equal radii

Congruent Circles

4. a chord of a circle that contains the center of the circle

Diameter

5. a segment joining the center of a circle to a point of the circle

Radius

The given vocabulary words are all related to the concept of circles in mathematics. Each term is defined in respect to a characteristic or property of a circle. The terms covered were circle, radius, diameter, congruent circles and concentric circles.

The vocabulary words match with the correct definitions as follows:

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the new price is reduced by 10% of $3000.

10% of $3000 is one tenth of 3000, so 3000/10 = $300

so the original price was reduced by $300 to be $2700

red red red red red yellow yellow yellow yellow yellow yellow

hope this helps :)

A) The price elasticity of demand is given by

... Ed = (dx/dp)·(p/x)

... = -250·(15/(9500-250·15)) ≈ -0.652

B) This value has a magnitude less than 1, so price can be increased to increase revenue.

_____

The price at which Ed has a magnitude of 1 is ...

... 250p/(9500 -250p) = 1

... 250p = 9500 -250p

... 500p = 9500

... p = 9500/500 = 19

Revenue will increase as price increases up to $19 per pair.

EXPLANATION

The nth term of the sequence is given by

[tex]U_n=a+(n-1)d [/tex]

Where

[tex]a[/tex]

is the first term and

[tex]d[/tex]

is the constant difference.

We were given that,

[tex]a=6[/tex]

S we just need the common difference to write the nth term.

We can get that from another information given to us.

We were also given that the 4th term is 6. This gives the equation.

[tex]a+3d=-6[/tex]

We substitute

[tex]a=6[/tex]

to obtain

[tex]6+3d=-6[/tex]

Or

[tex]2+d=-2[/tex]

This implies,

[tex]d=-2-2[/tex]

[tex]d=-4[/tex]

We substitute these values into the general formula to obtain,

[tex]U_n=6+(n-1)\times-4[/tex]

This gives us,

[tex]U_n=6+-4n+4[/tex]

[tex]U_n=10-4n[/tex]

Hence the nth term of the sequence is,

[tex]10-4n[/tex]

[tex]a_{n}[/tex] = 10 - 4n

this is an arithmetic sequence with n th term

[tex]a_{n}[/tex] = [tex]a_{1}[/tex] + (n - 1 )d

where [tex]a_{1}[/tex] is the first term and d the common difference

given [tex]a_{4}[/tex] = - 6, then

6 + 3d = - 6 ( subtract 6 from both sides )

3d = - 12 ( divide both sides by 3 )

d = - 4 ← common difference hence

[tex]a_{n}[/tex] = 6 - 4 (n - 1 ) = 6 - 4n + 4 = 10 - 4n

10, 267

the fraction of voters opposed from the survey = [tex]\frac{250}{974}[/tex]

Assuming this fraction as a basis then the predicted number against will be

40, 000 × [tex]\frac{250}{974}[/tex] = 10, 267 ( nearest while number )

You can eliminate fractions by multiplying the whole thing by 7.

... -x +28 ≥ 21x

Now, add x to get all x-terms on the right. Then, divide by the coefficient of x.

... 28 ≥ 22x

... 28/22 ≥ x

This fraction can be reduced, so we have ...

... A. x ≤ 14/11

Answer: [tex]x^4[/tex]

Step-by-step explanation:

Here, the given expressions are,

[tex]x^4[/tex]

[tex]x^5[/tex]

The factors of [tex]x^4[/tex] = x × x × x × x

While, the factors of [tex]x^5[/tex] = x × x × x × x × x

Hence, the common factors = x × x × x × x = [tex]x^4[/tex]  

So, the greatest common factor of the given expression is [tex]x^4[/tex]          

Answer:

A. x4

Step-by-step explanation:

A graph shows that the best choice is ...

... b. 2.3

_____

Finding real roots of higher-degree polynomials is often done most easily with the help of a graphing calculator.

x = 2x + 1

x - 2x = 1

-x = 1

x = -1

Solution :

Given , function[tex]f(x) = 2x+1[/tex]

we have to find the inverse of the function f(x)

Substitute y for f(x):  [tex] y=2x+1[/tex]

Subtract 1 from both sides, [tex]y-1=2x+1-1[/tex]

Divide both sides by 2, [tex]\frac{y-1}{2} = x[/tex]

[tex]\Rightarrow x=\frac{y-1}{2}[/tex]

Substitute [tex]f^{-1}(y)\:for\:x [/tex][tex]\RIghtarrow f^{-1}(y)=\frac{y-1}{2}[/tex]

Hence, The inverse of the function [tex]f(x)=2x+1\:is f^{-1}(y)=\frac{y-1}{2}[/tex]

An angle bisector divides the angle into equal halves.

Given that:

[tex]\angle ABD = 52^o[/tex]

From the question, we understand that:

BC bisects [tex]\angle ABD[/tex]

This means that:

[tex]\angle ABD = 2 \times \angle ABC[/tex] ---- By definition of midpoint

So, we have:

[tex]52^o= 2 \times \angle ABC[/tex] ---- By substitution property

Divide both sides by 2

[tex]26^o= \angle ABC[/tex] ---- By division property of equality

So, we have:

[tex]\angle ABC = 26^o[/tex] --- By symmetric property of equality

Hence,

[tex]\angle ABC = 26^o[/tex] --- proved

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To prove that m∠ABC = 26°, we can use the fact that BC bisects ∠ABD (given) and the properties of angles.

To prove that m∠ABC = 26°, we can use the fact that BC bisects ∠ABD (given) and the properties of angles. Here is a step-by-step proof:

Therefore, we have proven that m∠ABC = 26°.

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Answer: Please, see the attached file.

Thanks.

Solution:

We can graph using the intercepts:

(1) y-intercept, when x=0

y=4x-3→y=4(0)-3→y=0-3→y=-3

Point=(x,y)=(0,-3)

(2) x-intercept, when y=0

y=4x-3→0=4x-3

Solving for x: Adding 3 both sides of the equation:

0+3=4x-3+3

3=4x

Dividing both sides of the equation by 4:

3/4=4x/4

3/4=x

x=3/4=0.75

Point=(x,y)=(3/4,0)=(0.75,0)

With these pair of points (0, -3) and (0.75,0) we can draw the right line

0.57

Writing a percentage as a decimal is no big mystery. The percent symbol (%) is simply a shorthand way to write "per hundred" or "divided by 100" (/100).

So ...

... 57% = 57/100

You know from place value and the way you read numbers that fifty-seven hundredths written as a decimal is ...

... 0.57

Answer:

7x+6 = 5(x+6)

Step-by-step explanation:

x represents Harry's age now, so 7x represents Nick's age now. (Nick is 7 times as old as Harry.)

In 6 years, Harry's age will be x+6.

In 6 years, Nick's age will be 7x+6, which is 5 times Harry's age at that time, 5(x+6). Hence an appropriate equation is ...

... 7x+6 = 5(x+6)

_____

Please note that finding the value of x does not give the answer to the question. We are asked for Harry's age in 6 years, so the answer is x+6 (=18).

Answer:

Its D) aka the last option

Step-by-step explanation:

This question is one where the numbers don't add up. You should ask your teacher to show you how to work it.

___

Let n, d, q represent the numbers of nickels, dimes, and quarters Landau has, respectively.

... d = 7n +3 . . . . . the number of dimes is 3 more than 7 times the number of nickels

... q = 2n -4 . . . . . the number of quarters is 4 less than 2 times the number of nickels

... 5n +10d +25q = 330 . . . . the total value of the coins is 330 cents

Using the first two equations to substitute into the last one, we get

... 5n +10(7n +3) +25(2n -4) = 330

... 125n -70 = 330 . . . . . . eliminate parentheses, collect terms

... n = 400/125 . . . . . . . . add 70, divide by 125

... n = 3.2

... d = 7·3.2 +3 = 25.4

... q = 2·3.2 -4 = 2.4

Landau has 3.2 nickels, 25.4 dimes, and 2.4 quarters.