WILL GIVE BRAINLIST WHEN I CAN the answer is not 72 or 54!!​

Answer:

k = - 9

Step-by-step explanation:

Given that y varies directly as x then the equation relating them is

y = kx ← k is the constant of variation

To find k use any ordered pair from the given table of values

Using x = 1, y = - 9, then

k = [tex]\frac{y}{x}[/tex] = [tex]\frac{-9}{1}[/tex] = - 9

Answer:

-9.

Step-by-step explanation:

y varies directly as x so y = kx where k is the constant of variation.

Inserting the values of x and y.

0 = k*0

-9 = k*1 so k = -9

-18 = 2*k so k = -9

-27 = 3 *k so k = -9.

Answer:

8

Step-by-step explanation:

The question is on interquartile range which is the median of the upper half of the data minus the median of the lower half of data

First arrange the data in an increasing order;

8,15,9,18,9,17,22,10,11,9,13

8,9,9,9,10,11,13,15,17,18,22

Find the median, which is the center value in the data set

8,9,9,9,10,11,13,15,17,18,22⇒the median is 11

Place brackets around the numbers above and below the median

(8,9,9,9,10)11 (13,15,17,18,22)

Find the median in the lower half of the data,Q1

(8,9,9,9,10) ⇒median is 9=Q1

Find the median in the upper half of the data,Q3

(13,15,17,18,22)⇒median is 17=Q3

Subtract Q1 from Q3 to get the interquartile range

Q3=17, and Q1=9

Q3-Q1=17-9=8

Answer:

[tex]\frac{50}{3}[/tex]

Step-by-step explanation:

Similar shapes have corresponding sides that are proportional.

So 20 corresponds to x (big to small).

So 12 corresponds to 10 (big to small).

Your information is already lined up for you to setup your proportion:

[tex]\frac{20}{12}=\frac{x}{10}[/tex]

Cross multiply:

[tex]20(10)=12(x)[/tex]

Simplify both sides:

[tex]200=12x[/tex]

Divide both sides by 12:

[tex]\frac{200}{12}=x[/tex]

Simplify by dividing top and bottom by 4:

[tex]\frac{50}{3}=x[/tex]

Answer:

{-4, 8, 5, 1, 5}

Step-by-step explanation:

In a set of ordered pairs, the domain is the set of the first number in every pair.

If the set of ordered pairs is {(-4,8), (8,10), (5,4), (1,6), (5,-9)},

                      the domain is {  -4,     8,        5,     1,      5}

Answer:

Step-by-step explanation:

x + 2 = 5       subtract 2 from both sides

x + 2 - 2 = 5 - 2

x = 3

Check:

3 + 2 = 5     CORRECT :)

10

If you treat the number as x, then [tex]\frac{1}{2}x=x+5\to-5=\frac{1}{2}x\to-10=x[/tex].

Answer:

910$

Step-by-step explanation:

It's easiest if we just add the width and length together to start which would be 2 sides of the fence so we multiply by 2 to complete the whole perimeter.

80+60 = 140 x 2 = 280

Now you need to multiply 280 by 3.25 because that is what it will cost in the end since the 280 is all of the feet together and the 3.25 is each foot's price.

3.25 x 280 = 910

910$

For this case we have that by definition, the point-slope equation of a line is given by:

[tex]y-y_ {0} = m (x-x_ {0})[/tex]

We have the following points:

[tex](x_ {1}, y_ {1}) :( 2,6)\\(x_ {2}, y_ {2}) :( 4,0)\\m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {0-6} {4-2} = \frac {-6} {2} = -3[/tex]

We chose a point:

[tex](x_ {0}, y_ {0}) :( 4,0)[/tex]

Substituting in the equation we have:

[tex]y-0 = -3 (x-4)\\y = -3 (x-4)[/tex]

Finally, the equation is: [tex]y = -3 (x-4)[/tex]

Answer:

OPTION C

Answer:

Third option:  [tex]y=-3(x-4)[/tex]

Step-by-step explanation:

The equation of the line in Point-Slope form is:

[tex]y-y_1=m(x-x_1)[/tex]

Where "m" is the slope and [tex](x_1,y_1)[/tex] is a point on the line.

Given the points  (4, 0) and (2, 6), we can find the slope with this formula:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Substituting values, we get:

 [tex]m=\frac{0-6}{4-2}=-3[/tex]

Finally, substituting the slope and the point (4,0) into  [tex]y-y_1=m(x-x_1)[/tex], we get:

 [tex]y-0=-3(x-4)[/tex]

 [tex]y=-3(x-4)[/tex]

Answer:

After  x/450 minutes

Step-by-step explanation:

The speed uphill is 200 ft/min

The speed down hill is 250 ft/min

Lets take the hiking distance top to down hill is x ft

Remember speed=distance/time

Relative speed =200+250=450ft/min

Time to meet=distance/relative speed

Time to meet=x/450 min

Final answer:

To find out how long it will take until you meet, we need to determine the distances each hiker covers and then divide it by their respective rates.

Explanation:

To find out how long it will take until you meet, we need to determine the distances each hiker covers and then divide it by their respective rates.

The first hiker covers a certain distance while hiking uphill, while the second hiker covers a certain distance while hiking downhill. When they meet, their combined distances will add up to the total distance of the trail.

Let's say it takes x minutes for you to meet. The first hiker covers a distance of 200x feet in x minutes, while the second hiker covers a distance of 250x feet in the same x minutes. When they meet, their combined distances will equal the length of the trail, so we can set up the equation: 200x + 250x = total distance. Solving for x will give us the time it takes for you to meet.

Answer:

The coordinates of point B are (-7 , -2)

Step-by-step explanation:

* Lets explain how to solve the problem

- The mid-point (x , y) of the line whose endpoints are (x1 , y1) and

 (x2 , y2) is [tex]x=\frac{x_{1}+x_{2}}{2},y=\frac{y_{1}+y_{2}}{2}[/tex]

∵ M is the midpoint of AB

∵ The coordinates of point A are (-3 , 6)

∵ The coordinates of point M are (-5 , 2)

- Let the coordinates of point A are (x1 , y1) , The coordinates of

 point B are (x2 , y2) and The coordinates of point M are (x , y)

∴ x = -5 , x1 = -3 and y = 2 , y1 = 6

- Lets use the rule of the mid point to find x2 , y2

∵ [tex]-5=\frac{-3+x_{2}}{2}[/tex] ⇒ multiply both sides by 2

∴ [tex]-10=-3+x_{2}[/tex] ⇒ add 3 to both sides

∴ -7 = x2

∵ [tex]2=\frac{6+y_{2}}{2}[/tex] ⇒ multiply both sides by 2

∴ [tex]4=6+y_{2}[/tex] ⇒ subtract 6 from both sides

∴ -2 = y2

∵ The coordinates of point B are (x2 , y2)

∴ The coordinates of point B are (-7 , -2)

Answer:

A) 6^2 + 11^2 is not equal to 15^2

Step-by-step explanation:

To find out if a right triangle is a right triangle you have to use the Pythagorean Theorem, like it is used in A.

6^2 + 11^2 = 15^2

36 + 121 = 225

157 does not equal 225

So this is not a right triangle

Answer:

Option A

Step-by-step explanation:

Given in the picture is a triangle ABC with three sides given as 6,11 and 15

By the picture itself we can say that the largest angle is obtuse and hence the triangle is not right angled.

Using the converse of Pythagorean theorem that in a right triangle sides square add upto square of hypotenuse let us check whether this applies to this triangle.

Small sides are 6 and 11

Squaring and adding gives

[tex]6^2+11^2 = 187[/tex]

Large side = 11 and square is

[tex]15^2 =225 > 121[/tex]

Hence this is not a right triangle but obtuse

So option A is right

For this case we have the following system equations:

[tex]x + 2y = 11\\6x + 4y = 34[/tex]

To use the elimination method we must multiply the first by -2. So:

[tex]-2x-4y = -22\\6x + 4y = 34[/tex]

In this way, if we add the equations, the variable y is eliminated.

Answer:

-2

Option C

Answer:

Ratio of the number of votes that were not for mayor Jackson to the total number of votes is 3:7

Step-by-step explanation:

Votes of Mayor Jackson = 32,000

Total Votes = 56,000

Votes not for Mayor Jackson = 56000 - 32000

Votes not for Mayor Jackson = 24000

ratio of the number of votes that were not for mayor Jackson to the total number of votes = Votes not for Mayor Jackson:Total Votes

= 24,000:56,000

=24:56 (divide numerator and denominator by 8)

=3:7

So, ratio of the number of votes that were not for mayor Jackson to the total number of votes is 3:7

Answer:

3 : 7

Step-by-step explanation:

It is given that,

In an election 32,000 people voted for Mayor Jackson

A total of 56,000 people voted in the election.

To find the ratio

Total number of people voted = 56000

Number of people voted for Mayor Jackson = 32000

Number of  votes that were not for mayor Jackson = 56000 - 32000 = 24000

The ratio of the number of votes that were not for mayor Jackson to the total number of votes = 24000 : 56000

 = 3 : 7

Answer:

[tex]\large\boxed{y=-\dfrac{2}{3}x-\dfrac{13}{3}}[/tex]

Step-by-step explanation:

The slope-intercept form of an equation of a line:

[tex]y=mx+b[/tex]

m - slope

b - y-intercept

The formula of a slope:

[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]

From the graph we have two points (-5, -1) and (-2, -3).

Look at the picture.

Calculate the slope:

[tex]m=\dfrac{-3-(-1)}{-2-(-5)}=\dfrac{-2}{3}=-\dfrac{2}{3}[/tex]

Put it to the equation in slope-intercept form:

[tex]y=-\dfrac{2}{3}x+b[/tex]

We can't read the y-intercept from the graph. Therefore put the coordinates of the point (-5, -1) to the equation and calculate b:

[tex]-1=-\dfrac{2}{3}(-5)+b[/tex]

[tex]-1=\dfrac{10}{3}+b[/tex]         subtract 10/3 from both sides

[tex]-\dfrac{3}{3}-\dfrac{10}{3}=b\to b=-\dfrac{13}{3}[/tex]

Finally:

[tex]y=-\dfrac{2}{3}x-\dfrac{13}{3}[/tex]

Answer:

The measure of the smaller angle is 62°

Step-by-step explanation:

we know that

If two angles form a linear pair, then their sum is equal to 180 degrees (supplementary angles)

so

(2x-30)°+(x-12)°=180°

Solve for x

3x=180°+42°

3x=222°

x=74°

The measure of the angles are

(2x-30)°=2(74)-30=118°

(x-12)°=74-12=62° -----> smaller angle

Answer:

Yes, it's undefined.

The slope is undefined.

Step-by-step explanation:

Slope formula:

[tex]\displaystyle \frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\displaystyle \frac{5-(-3)}{6-6}=\frac{8}{0}=0[/tex]

Therefore, the slope is undefined.

Hope this helps!

Answer:

undefined

Step-by-step explanation:

To find the slope of a line, we use the equation

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

    = (5--3)/(6-6)

   = (5+3)/(6-6)

  =8/0

 Anything divided by 0 is undefined, so the slope is undefined

The graph located in the upper right corner of the image attached shows the graph of y = 3[x]+1.

In order to solve this problem we have to evaluate the function y = 3[x] + 1 with a group of values.

With x = { -3, -2, -1, 0, 1, 2, 3}:

x = -3

y = 3[-3] + 1 = -9 + 1

y = -8

x = -2

y = 3[-2] + 1 = -6 + 1

y = -5

x = -1

y = 3[-1] + 1 = -3 + 1

y = -2

x = 0

y = 3[0] + 1 = 0 + 1

y = 1

x = 1

y = 3[1] + 1 = 3 + 1

y = 4

x = 2

y = 3[2] + 1 = 6 + 1

y = 7

x = 3

y = 3[3] + 1 = 9 + 1

y = 10

 x     y

-3    -8

-2    -5

-1     -2

0      1

 1     4

 2    7

 3   10

The graph that shows the function y = 3[x] + 1 is  the one located in the upper right corner of the image attached.

Answer:

The answer you picked was correct. I just took the test and that's it.

Step-by-step explanation:

Answer:

A. -2, -5

Step-by-step explanation:

x^2 + 7x + 10 = 0

Factor the equation

What 2 numbers multiply to 10 and add to 7

2*5 =10

2+5 = 7

(x+2) (x+5)=0

Using the zero product property

x+2 =0  x+5 =0

x=-2       x = -5

Answer:

The parent function f(x) is equal to [tex]f\left(x\right)=\left|x\right|[/tex]

The translations is 3 units to the left and 5 units down

Step-by-step explanation:

we have

[tex]h\left(x\right)=\left|x+3\right|-5[/tex]

The vertex of the function h(x) is the point (-3,-5)

we know that the parent function f(x) is equal to

[tex]f\left(x\right)=\left|x\right|[/tex]

The vertex of the function f(x) is the point (0,0)

so

The rule of the transformation of f(x) to h(x) is equal to

(x,y) -----> (x-3,y-5)

That means ----> The translations is 3 units to the left and 5 units down

Answer:

716 yards

Step-by-step explanation:

Circumference = π × Diameter

2 × Radius = Diameter

2 × 114 = 228

Circumference = π × Diameter

Circumference = π × 228 = 228π = 716.283125018

Answer:

716 yd

Step-by-step explanation:

The circumference of a circle is 2*pi*radius.

The radius is 114 yd so the circumference is 2*pi*114 yd.

Put into the calculator and you obtain 716.283 yd.

The answer to the nearest yard is 716.

Answer:

A. 5(9x-z)

Step-by-step explanation:

45x-5z

We can factor out a 5 from each term

5(9x -z)

Answer:

A.

Step-by-step explanation:

Given the expression, 45x - 5z, you have to think what can be factored out of BOTH terms.

we know 5 is a factor of both terms, so it can be taken out

=

5(9x - z), nothing else can be factored

Answer:

[tex]\large\boxed{(x-3)(2x^2-5x+1)=2x^3-11x^2+16x-3}[/tex]

Step-by-step explanation:

Use the distributive property: a(b + c) = ab + ac:

[tex](x-3)(2x^2-5x+1)=(x-3)(2x^2)+(x-3)(-5x)+(x-3)(1)\\\\=(x)(2x^2)+(-3)(2x^2)+(x)(-5x)+(-3)(-5x)+x-3\\\\=2x^3-6x^2-5x^2+15x+x-3\qquad\text{combine like terms}\\\\=2x^3+(-6x^2-5x^2)+(15x+x)-3\\\\=2x^3-11x^2+16x-3[/tex]

Answer:

it may be e=c+12

Step-by-step explanation:

common sense

For this case we have:

e: Variable representing the number of eggs

c: Variable representing the number of cartons of eggs.

So, if in each carton there are 12 eggs we can write the following equation:

[tex]e = 12c[/tex]

Answer:

The equation is: [tex]e = 12c[/tex]

Answer:

4) x

Step-by-step explanation:

The expression on the left side simplifies to:

-4(x - 2) + 5x =

= -4x + 8 + 5x

= x + 8

To have an equation with no solution, you need the same x term on the right side but a different constant term. The x term on the left side is x. You need x on the right side but with a constant term different than 8.

Answer: 4) x

Answer:

D) x

Step-by-step explanation:

When simplified, the answer will result to a=b which means that it has no solution

Add the totals of each item together:

189.99 + 249.95 + 493.68 + 98.75 + 98.75 = 1,131.12

Now multiply that by the tax rate as a decimal:

1131.12 x 0.0725 = 82.01

Now add that to the total of the items:

1,131.12 + 82.01 = $1,213.13 total

For this case we have that the total of the purchase is given by:

Coffee table: $ 189.99

Loveseat: $ 249.95

Sofa: $ 493.68

2 chairs: 2 * $ 98.75 = $ 197.5

Adding up we have: $ 1131.12

Now, we must find the tax amount:

$ 1131.12 ----------> 100%

x ------------------------> 7.25%

Where "x" represents the value of the tax:

[tex]x = \frac {7.25 * 1131.12} {100}\\x = 82.0062[/tex]

Finally, the amount to be paid is:

$ 1131.12 + $ 82.0062 = $ 1213.13

Answer:

Option B

Answer:

B

Step-by-step explanation:

The graph of g(x) has its vertex at (1, - 3)

The equation of a parabola in vertex firm is

y = a(x - h)² + k

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

here (h, k) = (1, - 3), thus

g(x) = (x - 1)² - 3 → B

Answer:

B.f(x)=(x-1)²-3

Step-by-step explanation:

apex

[tex]\bf -\sqrt{225}+4.8~~ \begin{cases} 225=&3\cdot 3\cdot 5\cdot 5\\ &3^2\cdot 5^2\\ &(3\cdot 5)^2\\ &15^2 \end{cases}\\\\\\ -\sqrt{15^2}+4.8\implies -15+4.8\implies -10.2[/tex]

Final answer:

The discriminant of a quadratic equation informs us about the nature of its roots. By calculating the discriminant for each given equation, we categorize them accordingly: equations with discriminant greater than zero have two distinct real roots, equal to zero have one repeated real root, and less than zero have two complex roots.

Explanation:

The discriminant of a quadratic equation ax² + bx + c = 0 is given by the expression b² - 4ac. The value of the discriminant determines the nature of the roots of the equation. To find the type of roots for each given equation:

x² − 4x + 2: The discriminant is (-4)² - 4(1)(2) = 16 - 8 = 8, which is greater than zero, so this equation has two distinct real roots.

5x² − 2x + 3: The discriminant is (-2)² - 4(5)(3) = 4 - 60 = -56, which is less than zero, indicating two complex roots.

2x² + x − 6: The discriminant is (1)² - 4(2)(-6) = 1 + 48 = 49, also greater than zero, leading to two distinct real roots.

13x² − 4 = 0 has a discriminant equivalent to that for x² − 4/13 = 0, which is 0² - 4(1)(-4/13) = 16/13, which is greater than zero, so this equation will have two distinct real roots.

x² − 6x + 9: The discriminant is (-6)² - 4(1)(9) = 36 - 36 = 0, indicating one repeated root.

x² − 8x + 16: The discriminant is (-8)² - 4(1)(16) = 64 - 64 = 0, which means this equation has one repeated root.

4x² + 11 = 0 has a discriminant equivalent to that for x² + 11/4 = 0, which is 0² - 4(1)(11/4) = -11, less than zero, thus resulting in two complex roots.

Through the method of using the discriminant, we can determine the types of roots each quadratic equation will have.

Answer:

70%

Step-by-step explanation:

The probability it rains on at least one of the days is:

P = P(Sat & not Sun) + P(Sun & not Sat) + P(Sat & Sun)

P = (0.40)(1−0.50) + (0.50)(1−0.40) + (0.40)(0.50)

P = 0.20 + 0.30 + 0.20

P = 0.70

Another way to look at it is 1 − the probability that it doesn't rain on either day.

P = 1 − P(not Sat & not Sun)

P = 1 − (1−0.40)(1−0.50)

P = 1 − 0.30

P = 0.70

There is a 70% probability that it will rain on at least one day.

The probability that it will rain on at least one day over the weekend is 70%, based on independent probabilities given for Saturday and Sunday.

The subject of your question is probability, a branch of mathematics that studies randomness and the likelihood of events occurring. To calculate the probability that it will rain over the weekend, i.e., on at least one of the days (Saturday or Sunday), we first need to find the probability that it won't rain on either day.

The probability it doesn't rain on Saturday is 60% (100% - 40%), and the probability it doesn't rain on Sunday is 50% (100% - 50%). Since these events are independent, we multiply these probabilities to find the joint probability. Therefore, the probability it doesn't rain on either day is 30% (0.6 × 0.5 = 0.3).

Now, this is the case which we don’t want (no rain), so the case we want (that it rains at least one day) is the complementary event of this. Thus, we subtract this from the total probability, which is 1, yielding a 70% (1 - 0.3) probability that it will rain on at least one of the days over the weekend.

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The value of y = 30°

By alternating interior property, alternate angle of 150° is equal to 150°.

Straight line has angle 180°

So, y + 150° = 180°

y = 30°

Hence the value of y = 30°

Learn more about alternating angle here:

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