3a² + 2b c² if a = 1, b = 2, and c = 3.​

Answer:

LK = 7

Step-by-step explanation:

We are using segment addition

NM + ML + LK = NK

x-6  + 9 +  2x-19  = 23

Combine like terms

x+2x   -6+9-19 = 23

3x -16 = 23

Add 16 to each side

3x-16+16 = 23+16

3x = 39

Divide each side by 3

3x/3 = 39/3

x = 13

We want to find the value of LK

LK = 2x-19

     =2(13) -19

     = 26 -19

    = 7

Answer:

[tex]\sf \: LK = 7 \: units[/tex]

Step-by-step explanation:

It's clear that,

[tex] \sf \: NM + ML + LK = NK[/tex]

Given that,

NM ---> x - 6

ML ---> 9

LK ---> 2x - 19

NK ---> 23

First, let us find the value of x using these values.

[tex] \sf \: NM + ML + LK = NK \\ \sf x - 6 + 9 + 2x - 19 = 23 \\ \sf \: combine \: like \: terms. \\ \sf \: 3x - 16 = 23 \\ \sf3x = 23 + 16 \\ \sf3x = 39 \\ \sf \: divide \: both \: sides \: by \: 3. \\ \sf \: x = 13[/tex]

And now we have to find out the length of LK.

As we mentioned before,

LK = 2x - 19

So, to find the length of LK, we have to replace x with 13 and solve the equation.

Let us solve now.

[tex] \sf \: LK = 2x - 19 \\ \sf \: LK = 2 \times 13 - 19 \\ \sf \: LK = 26- 19 \\ \sf \: LK = 7 \: units[/tex]

In the city parks and recreation department has announced at least many more 15 people must register for the swimming class.

The city parks and recreation department has announced that it will have a swimming class, there are at least 24 people register for the class.

It is possible to register 9 people in each class.

Based on the given conditions, formulate,

⇒ least people registered for the class - far people have registered

So, we can write,

⇒ 24 - 9

Calculate the sum or difference,

⇒ 15 people

Therefore, At least many more people must register for the swimming class to be is equal to 15 people.

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The equation is d + 3h = $13

The cost of each hamburger is $3.5

From the question, we are to write and solve the equation for the problem.

From the given information,

Danie purchases one hot dog $2.50

and

3 hamburgers

and

He spent $13 total

Let d represent hot dog

and

h represent hamburger

Then,

d = $2.50

We can write that

d + 3h = $13

$2.50 + 3h = $13

3h = $13 - $2.50

3h = $10.5

h = $10.5/3

h = $3.5

Hence, the cost of each hamburger is $3.5

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Answer:

Step-by-step explanation:

Answer:

56

Step-by-step explanation:

Answer:

the answer is

f = 180°-50°74°

Answer:

quadratic

Step-by-step explanation:

Answer:

-1 - 17x

Step-by-step explanation:

Firstly you arrange the like terms as follows:

(17 - 18) (- 12x - 5x)

Then you work it out:

17 - 18 = -1

-12x - 5x = -17x

After you combine the answers:

-1 -17x

Finally you get:

-1 - 17x

Answer:

mean = 23

median = 22.50

mode = 20

range = 7.5

Step-by-step explanation:

mean is the total / n

total = 20+20+22.50+25+27.50 = 115

n= 5

mean = 115/5 = 23

median you'll arrange the numbers in ascending order and pick the middle one and its 22.50

20, 20, [22.50], 25, 27.50

mode is the number that is repeated mostly and it was 20.

range is max - min

max is 27.50

min is 20

range = 27.50 - 20

range = 7.50

Jasmine will prepare 3/2 cups of the spray cleaner.

Fractions are represented in mathematics as a numerical value that defines a portion of a whole.

For the given question;

Jasmine used 1 cup of water for the spray.

1/4 cups of white vinegar is used.

1/4 cups of alcohol is also used for the spray.

Then, the total cups of spray cleaner made is;

= 1 + 1/4 + 1/4

Taking LCM.

= (4 + 1 + 1)/4

= 6/4

= 3/2

Therefore, the total cups of spray cleaner prepared by the Jasmine is 3/2 cups.

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Acceleration of the ball is 10 [tex]m/s^{2}[/tex].

The relation between initial velocity , final velocity , acceleration and time can be written as,

v = u + at

Here, v is the final velocity, u is the initial velocity, a is the acceleration and t is the time

Time taken by ball to reach the ground = t = 2 seconds.

As it starts from rest , initial velocity of ball = u = 0 m/s.

Final velocity of ball = v = 20m/s.

v = u + at                                                               equation 1

Put value of v = 20m/s , u = 0m/s and t = 2 seconds in equation 1.

(20m/s) = (0 m/s) + a (2 second)

a = ( 20m/s )/( 2second )

a = 10 [tex]m/s^{2}[/tex]

Acceleration of the ball is 10 [tex]m/s^{2}[/tex].

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Answer:

x + 12

x - 22

y / 13

I'm not sure if this is the answer you're looking for since multiple choice answers weren't provided but i hope this helps at least a little!

Answer:

2 i think

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

You have 1 item. You have another item. That means you have 2 items.

The density of the sample is 796.61 kg/m^3.

According to teh given question.

The weight of the metal is 18.5g

The volume of the sample is 2.36 cm^3 or 0.00000236

Since, we know that

Weight = mass × acceleration due to gravity

⇒ 18.5g = mass of the metal × 9.8

⇒ 18.5g/1000 = mass of the metal × 9.8

⇒ mass of the metal = 0.00188kg

Therefore,

the density of the sample

= 0.00188/0.00000236

= 796.61 kg/m^3

Hence, the density of the sample is 796.61 kg/m^3.

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Answer:

g = 7

Step-by-step explanation:

the first thing you must do is combine like terms

10g - 7g is also just 3g

3g - 3 = 18

now add 3 to both sides

3g = 21

now divide everything by 3

g = 7

that is your answer

The probability of selecting red marble is 0.444.

Probability is calculated using the formula :

Probability = number of favourable outcomes ÷ total number of outcomes

Number of favourable outcomes = number of red marbles in box

Number of favourable outcomes = 8

Total number of outcomes = total number of marbles

Total number of outcomes = 8 + 4 + 6

Total number of outcomes = 18

Keep the values in formula of probability to find the probability of selecting red marble

Probability = 8 ÷ 18

Performing Division by 2

Probability = 4/9

Representing in decimal round to three decimal places = 0.444

Hence, the probability of selecting red marble is 0.444.

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Utilizando la formula de Bhaskara obtenemos los interceptos del eje x que son en x = 0.

La cuadratica con las dadas raices es:

f(x) = x^2 + 64

Primero tenemos la función cuadratica:

f(x) = 2x^2 - 6x + (9/2)

Primero, debemos encontrar las soluciones a la ecuación:

2x^2 - 6x + (9/2) = 0

Esto nos dara los interceptos con el eje x.

Usando la formula de Bhaskara obtendremos:

x = ( 6 ± √( (-6)^2 - 4*(9/2)*2 )/(2*2)

x = (6  ± 0)/4

Entonces tenemos dos interceptos del eje x en el mismo punto, que es x = 6/4 = 3/2

2) Ahora nos dan dos raices, que son x = 8 y x = -8

Recordar que si nos dan dos raices a y b, entonces una cuadratica con esa raices será:

f(x) = A*(x - a)*(x - b)

Donde A es el coeficiente lider de la cuadratica. En este caso no nos dan un valor de A, por lo que asumimos es 1.

Entonces esta cuadratica será:

f(x) =(x - 8)*(x + 8)

Expandiendo:

f(x) = x^2 + 64

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Answer:

Step-by-step explanation:

Multiply the figure outside the bracket with each figure inside the bracket, and also be cautious of the signs.

1) -5(x + 2)

= -5x - 10    (multiply -5 with x and then multiply it with +2)

3) 7(1-9x)

= 7 - 63x    (multiply 7 with 1 then multiply it with 9x)

5) 9(8 - 8a)

= 72 - 72a    (multiply 9 with 8 then multiply it with 8a)

7) 4n - 7n

= -3n           (subtract the numbers only, as both are being multiplied with n, they can be subtracted)

9) n - 2 + 6

= n + 4          

Answer:25

Step-by-step explanation:

The value of sin 20 and sin 340 is 0.3420 and -0.3420 respectively

What is quadrant?

Each of the coordinate plane's four portions is referred to as a quadrant. In the first quadrant, all trig functions—sin, cos, tan, sec, csc, and cot—are positive. The second quadrant of sine has a positive value. Tangent in the third quadrant is positive. A positive cosine is present in the fourth quadrant.

Sin(20°)

20° is in the first quadrant. In quadrant 1, every trigonometric function is positive..

Sin(20)  = 0.3420

Sin(340°)

340° is in the forth quadrant. The sin is minus in quadrant 4.

Sin(340)  = -0.3420

Therefore, the value of sin 20 and sin 340 is 0.3420 and -0.3420 respectively

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Answer:

Step-by-step explanation:

1) A heart is equal to 5 units, a star to 13 units and a square to 20 units.

2) A star is equal to 66 units, a circle to 30 units and a triangle to 14 units.

Herein we find two case of systems of elements which have to be solved on the fact that each element represents a quantity. Now we proceed to represent each system:

Case 1

x - Heart

y - Star

z - Square

The algebraic representation of the system is shown below:

18 - x = y                      (1)

2 · x = 10                     (2)

z - y - 2 = x                  (3)

By (2):

x = 5

By (1):

y = 18 - 5

y = 13

By (3):

z = x + y + 2

z = 5 + 13 + 2

z = 20

Case 2

x - Triangle

y - Star

z - Circle

The algebraic representation of the system is shown below:

2 · x = 28                   (1)

80 - x = y                   (2)

y + x - z = 50             (3)

By (1):

x = 14

By (2):

y = 80 - 14

y = 66

By (3):

z = y + x - 50

z = 66 + 14 - 50

z = 30

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Answer:

$11.50

Step-by-step explanation:

6.75 times 4 is 27

$73-27 is 46

46 divided by 4 is 11.5

Answer:

$11.50

Step-by-step explanation:

Total spent = Food + Tickets

The cost of the tickets times the number of people

6.75 x 4 = $27.00 for tickets

then the total number of dollars spent in total subtracted by the amount for tickets

73 - 27 = $46 for food

$46 / 4 people = 11.50

So each person spent 11.50 on food.

The equation that can be used to find the y-intercept of the line is

b = y - mx, and the y-intercept for this equation will be -12

In this question, It is given that a line passes through a given point (1,-8), and the slope of the line is given 4. We know the equation of Slope-point form : (y - y₁) = m(x - x₁), Where m = slope = 4 and (x1,y1) = (1,-8)

Now, putting these values into the slope-point form equation, We get :

            => (y - y₁) = m(x - x₁)

            => (y - (-8) = 4(x - 1)  => (y +8) = 4x -4

            => y = 4x -12          ---> Equation (1)

We got the slope-intercept form for the following situation.

We can find out the y-intercept value by comparing the

            => y = mx + b to Equation (1).

            => b = -12

Hence, b = y - mx will be used to find out the y-intercept and the y-intercept for this line will be -12

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Using translation concepts, the correct statement is given by:

Figure B is similar but not congruent to Figure A.

A translation is represented by a change in the function graph, according to operations such as multiplication or sum/subtraction either in it’s definition or in it’s domain. Examples are shift left/right or bottom/up, vertical or horizontal stretching or compression, and reflections over the x-axis or the y-axis.

Another format of a translation is a dilation, when the side lengths of the image are changed, hence:

Hence the correct statement is:

Figure B is similar but not congruent to Figure A.

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Answer:

e=7(12)-3

Step-by-step explanation:

Because he needs three more to have 7 groups of 12 (7x12=84) so he has three less than the 7 groups of 12 he needs (84). So subtract 3 from that.

Class width is 10.

Lower class limit is 100.

Upper class limit is 110 of the first class.

A histogram is a visual depiction of data points arranged into ranges that the user has chosen. The histogram, which resembles a bar graph in appearance, groups numerous data points into comprehensible ranges or bins in order to compress a data series into an easily understood visual. In statistics, histograms are frequently used to show the frequency of a particular type of variable within a given range. Analysts can customize histograms in a number of different ways. They are able to alter the space between buckets. The sample given above has eight buckets with a ten-bucket spacing. Four buckets with a 20-second interval could be used instead.

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Answer:

Step-by-step explanation:

A: The denominator doubles every step.

B: 1/16 1/32 1/64

Answer:

====================

The common ratio is the constant factor between consecutive terms, that is:

Correct choice is D.

Step-by-step explanation:

36 multiple 4 it is equivalent to what you say

Answer: the x value of the ordered pair is 0