5(2y−3)−4y=8−2y−15 and the justification

Answer:

51

Step-by-step explanation:

Given parameters:

Number of heads  = 30 heads

Number of legs  = 84 legs

Unknown:

Number of chickens and pigs = ?

Solution:

Since a chicken has one head, the number of chicken is the same as the number of heads;

  Number of chicken  = 30

A pig has 4 legs,

   Number of pigs  = [tex]\frac{84}{4}[/tex]   = 21pigs

Total number of pigs and chickens = 30chickens + 21 pigs  = 51

Answer:

с)2

Step-by-step explanation:

please make it braintliest

Answer:

The scale factor is 3. So your answer is D

Step-by-step explanation:

PLEASE MARK BRAINLIEST, THANK YOU SM

Answer:

49 degrees

Step-by-step explanation:

m < D = 90 - m < O (right triangle rule)

m < D = 90 - 41

m < D = 49

Answer:

6x-15=-5x+20+X

6x+5x-x=20+15

10x=35

X=35/10

X=3.5

Step-by-step explanation:

you have to start by expanding the brackets

then you have to collect the like terms

Answer:

x=9

Step-by-step explanation:

First, distribute the negative sign, changing (2x+9) to -2x-9

next, distribute. 10x+−2x+−9=(−3)(15)+(−3)(−4x)

then, combine like the like terms  (10x+−2x)+(−9)=12x−45

then you get  8x+−9=12x−45, and you will subtract 12x from both sides, resulting in −4x−9=−45. To get -4x by itself, add 9 to both sides

lastly, divide both sides by -4

x=9

Answer:

x = 9

Step-by-step explanation:

Distribute

10x - (2x + 9) = -3 (15 - 4x)

10 − 2 − 9 = − 3 (15 − 4)

Combine like terms

8 − 9 = − 3 (15 − 4 )

Rearrange terms

8 − 9 = − 3 (− 4 + 15)

Distribute

8 − 9 = 12 − 45

Add 9 to both sides of the equation

8 − 9 + 9 = 12 − 45 + 9

Answer:

Given,

WXYZ is a rectangle.

All angles are equal.

Each angle is a right angle.

angleW = 90°

Step-by-step explanation:

Given,

WXYZ is a rectangle.

All angles are equal.

Each angle is a right angle.

angleW

[tex] = 4n + 5 = 90[/tex]

[tex]4n = 90 - 5[/tex]

[tex]4n = 85[/tex]

[tex]n = \frac{85}{4} [/tex]

angleW

[tex]4n + 5[/tex]

[tex]4 \times\frac{85}{4} + 5[/tex]

[tex]85 + 5[/tex]

[tex]90[/tex]

Answer:

45x +20 +45y

Step-by-step explanation:

Let

x -----> the number of weeks worked by Bess

y ----> the number of weeks worked by Gina

we know that

The total money earned by Bess and Gina for delivering flowers, is equal to the sum of the number of weeks  worked by Bess and Gina. all multiplied by the weekly rate of $45 plus an additional total bonus of $20

so

The expression that represent this situation is

45(x+y)+20

Distribute :

45x +20+45y

Answer:

45n+20+45y

Step-by-step explanation:

45n+20+45y

Bess is 45 times the weeks she worked, plus a one time bonus.

Gina is just 45 times the weeks she worked, represented by y.

Answer:

don't know man sry

Step-by-step explanation:

Answer:

x > -1/8 hope helps

Answer:

how much does it cost for one??

Step-by-step explanation:

Answer:

I need more information.

Step-by-step explanation:

But it would cost $12 for 12 books if each book cost $1

That is just an example

Answer:

n = - 2

Step-by-step explanation:

Given

- 6n - 2n = 16, that is

- 8n = 16 ( divide both sides by - 8 )

n = - 2

Step-by-step explanation:

-6n-2n=16

-6n+-2n=16

(-6n+-2n)=16

-8n=16 divide both sides by - 8

-8n÷-8= 16÷ - 8

n= - 2

Answer:

25 students

Step-by-step explanation:

To solve this problem, use cross multiplication:

[tex]\frac{3}{5}=\frac{15}{x}[/tex]

3x = 75

x = 25

There are a total of 25 students in the class.

Answer:

[tex]\huge\boxed{\sf Total \ Students = 25}[/tex]

Step-by-step explanation:

Let the total no. of students be x

So, The given condition is:

[tex]\sf \frac{3}{5}\ of \ x = 15[/tex]        [OF means to multiply]

[tex]\sf \frac{3x}{5} = 15\\\\Multiplying \ 5 \ to \ both \ sides\\\\3x = 15*5\\\\3x = 75\\\\Dividing \ both \ sides \ by \ 3\\\\x = 25\\\\Total \ Students = 25\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

w = 10

General Formulas and Concepts:

Pre-Algebra

Step-by-step explanation:

Step 1: Define equation

12w + 10 = 2(3w + 35)

Step 2: Solve for w

Step 3: Check

Plug in w to verify it's a solution.

Here we see that 130 does indeed equal 130.

∴ w = 10 is a solution of the equation.

Step-by-step explanation:

Solve this equation by isolating for w.

Answer:

-12

Step-by-step explanation:

3x-6=8x+4

-3x     -3x

-6=5x+4

-4      -4

-10=5x

/5    /5

x=-2

3x-6

3(-2)-6

-6-6

-12

The measure of ∠WYX in the given isosceles triangle is; 150°

We are told that Triangle WXY is isosceles..

We are given the base equal angles as;

YZ bisects ∠WYX and m∠XYZ = (15x)°. Thus;

∠WYX = 2(15x)° = (30x)°

Now, we are told that m∠YXZ = (2x + 5)°

Thus, since sum of angles in a triangle is 180°, then;

30x + (2x + 5)° + (2x + 5)° = 180

34x + 10 = 180

34x = 170

x = 170/34

x = 5

Thus;

∠WYX = (30x)° = (30 × 5) = 150°

Read more on angles in a triangle at; https://brainly.com/question/11966001

Answer:

150°

Step-by-step explanation:

Triangle WXY is isosceles. ∠YWX and ∠YXW are the base angles. YZ bisects ∠WYX. m∠XYZ = (15x)°. m∠YXZ = (2x + 5)°. What is the measure of ∠WYX?

5°

15°

75°

150°

Answer:

1 True

2 c>−4

3 x<  3/2

Step-by-step explanation:

Answer:

1. e ≥ -2

2. c ≤ 4

3. x < 1.5 or 1 5/10

Step-by-step explanation:

1.  -3e-10 ≤ -4  => first add 10 to both sides

     +10    +10

-3e ≤ 6 => Then divide negative three on both sides.

/-3    /-3

e ≥ -2 => Since, we divided by a negative the sign switches.

2.  8c+4 ≤ 4(c-3) => First, Distribute the 4.

8c+4 ≤ 4c -12 => Next, Subtract 4 on both sides.

8c ≤ 4c -16 => then, subtract 4c on both sides.

-4c   4c

4c ≤ 16 => Finally, you divided 4 on both sides.

/4    /4

c ≤ 4

3. 5(x-1) < 3x +10 -8x => First, you add like terms.

5(x -1) < -5x +10 => Next, you distribute the 5.

5x -5 < -5x +10 => Then, you add five in both sides.

    +5      +5

5x < -5x +15 => After that you add -5x in both sides.

+5x   +5x

10x < 15 => Finally, you divide 10 in both sides.

/10     /10

x < 1.5 or 1 5/10

Answer: 3x+y=8

Step-by-step explanation:

In standard form: 3x+y=8

Answer:

Answer of this is... D... 2x-3

Answer: lol ty

Step-tep explanation:

Gimmie sum points kid ty]

kmjkkjkuijhjn

bjn

Answer:

6 minutes

45 minutes

Step-by-step explanation:

There are a few ways I solve problems with percentages. First... it is easy to find 10% of 60 because you just divide 60 minutes by 10 to find the answer. (you do this because 10% is 100% divided by 10)

If you know what 10% of 60... (6) and you are trying to find 75%... all you have to do is multiply the 10% value by 7 to find 70%...if you do this... you get 70% = 42 minutes.

To find the remaining 5%.... just add half of the 10% value to 42 minutes. (1/2 of 6 = 3)

42 + 3 = 45

I really hope this helped

2.   10% of 60 minutes long, means duration of 6 minutes.

3.   75% of 60 minutes long, means duration of 45 minutes.

The percentage is a mathematical term, which means a number or a ratio which represented in fractions of 100. we use '%' symbol to represent percentage.

Formula for percentage;

Percentage =   (present quantity/whole quantity)×100

2.  The duration of, 10% of 60 minutes is,

⇒ T/60×100 =10

⇒ T =  6 minutes

3.  The duration of, 10% of 60 minutes is,

⇒ T/60×100 =75

⇒ T =  45 minutes

To know more about  Percentage check:

https://brainly.in/question/33820520

#SPJ2

Answer:

F(2)=2^2+2*4=4+8=12

Answer:

20

Step-by-step explanation:

12/3=4

4*5=20

the bigger triangle is 4x bigger than the small triangle

Answer:

Sorry if I'm wrong but I'm positive that it would be 20m

Step-by-step explanation:

the dimensions a multiplied, 3x4=12 so in that case you should be able to multiply 5x4 which equals 20, like I said, I'm soooo sorry if I'm wrong. and please tell me if I am!!!

Answer:

real numbers

Step-by-step explanation:

f = 8.1432

Answer:

77°F = 25°C

Step-by-step explanation:

All we have to do is plug in 77° for F into the equation to find C.

C = [tex]\frac{5}{9} * (77-32)[/tex]

Subtract 32 from 77.

[tex]C=\frac{5}{9} * 45[/tex]

Now multiply by [tex]\frac{5}{9}[/tex].

[tex]C = 25[/tex]

77°F = 25°C

Answer:

Step-by-step explanation:

Perimeter is the sum of all the sides

Answer:

P = 10y - 3

Step-by-step explanation:

Perimeter is dettermined by adding all the outside surfaces information together.

Watch:

First, set up:

(3y - 2) + (2y + 2) + (2y - 2) + (y) + (2y - 1)

Now add the common alikes.

(3y + 2y + 2y + y + 2y) = 10y

(-2 + 2 - 2 - 1) = -3

Now you have your perimeter.

P = 10y - 3

Answer:

78×31%= approximately 24 years

Step-by-step explanation:

Explanation:

We have x = 5 turn into x = 1. We need to subtract 4 from the x coordinate to get this. Therefore x turns into x-4.

The y coordinate stays at y = 2 the entire time, so y isn't altered. We have y map to y.

Overall, the rule is [tex](x,y) \to (x-4, y)[/tex] which translates the point 4 units to the left.