whats the answer to number 3? please and thank you! and please provide steps

Answer:

7

Step-by-step explanation:

2x+10+11+(x+2)+(3x-2)=63

2(7)+10+11+(7+2)+(3(7)-2)=63

x=7

7 is the value of x

What are sides of a pentagon with different sides ?

If the sides of a pentagon are not equal in measure, it is termed as an irregular pentagon. In this case, the perimeter of the pentagon can be calculated by using the basic formula, Perimeter = sum of its sides.

Given,

side 1 = 2x

side 2 = 10

side 3 = x+2

side 4 = 11

side 5 = 3x-2

Sum of all the sides of the pentagon,

2x+10+(x+2)+11+(3x-2)=63

2x+10+x+2+11+3x-2=63

6x+21=63

6x=63-21

6x=42

x=42/6

x=7

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Answer:

$6.75

Step-by-step explanation:

I took math in high school

Answer:

m∠BCD = 90°

∠BCD is a right angle

Step-by-step explanation:

If a ray bisects an angle, that means it divides the angle into two equal parts in measure

∵ Ray CE bisects ∠BCD

→ Means divide it into two angles BCE and ECD which equal in measures

∴ m∠BCE = m∠ECD = [tex]\frac{1}{2}[/tex] m∠BCD

∵ m∠BCE = 3x - 6

∵ m∠ECD = 2x + 11

→ Equate them to find x

∴ 3x - 6 = 2x + 11

→ Add 6 to both sides

∵ 3x - 6 + 6 = 2x + 11 + 6

∴ 3x = 2x + 17

→ Subtract 2x from both sides

∵ 3x - 2x = 2x - 2x + 17

∴ x = 17

∵ m∠BCE =  [tex]\frac{1}{2}[/tex] m∠BCD

→ Substitute x in the measure of ∠BCE to find it, then use it to

   find m∠BCD

∵ m∠BCE = 3(17) - 6 = 51 - 6

∴  m∠BCE = 45°

∵ 45 = [tex]\frac{1}{2}[/tex] m∠BCD

→ Multiply both sides by 2

∴ 90 = m∠BCD

∴ m∠BCD = 90°

→ The measure of the acute angle is less than 90°, the measure of

   the obtuse angle is greater than 90°, and the measure of the

   right angle is 90°

∴ ∠BCD is a right angle

if we are taking the same eduinuity quiz then this is the correct answer

Answer: D.h(x)=3x-6

i hope this helps cause i'm doing the assingment rn

Answer:

7/12 or in decimal form it is .583

Step-by-step explanation:

Please mark brainliest!

hope this helps!

Answer:

Sorry if I'm late!!!

D. Used reason to improve people's lives

Explanation:

The enlightenment was a time when philosophers challenged the teachings of the catholic church.

30m +21

Answer:

[tex] \huge{ \bold{ \boxed{ \text{30m + 21}}}}[/tex]

Step-by-step explanation:

[tex] \text{4(9m + 3) + 9 - 2(3m) }[/tex]

[tex] \text{Step \: 1} : \text{Distribute \: 4 \: through \: the \: parentheses}[/tex]

➵ [tex] \text{36m + 12 + 9 - 2(3m)}[/tex]

[tex] \text{Step \: 2} : \text{Multiply \: 2 \: by \: 3m}[/tex]

➵ [tex] \text{36m + 12 + 9 - 6m}[/tex]

[tex] \text{Step \: 3 : \: Combine \: like \: terms}[/tex]

[tex] \text{Like \: terms \: are \: those \: which \: have \: the \: same \: base.}[/tex]

➵ [tex] \text{36m - 6m + 12 + 9}[/tex]

➵ [tex] \text{30m \: + 12 + 9}[/tex]

[tex] \text{Step \: 4 : Add \: the \: numbers}[/tex]

➵ [tex] \text{30m \: + \: 21}[/tex]

[tex] \sf{Hope \: I \: helped}[/tex]!

[tex] \sf{Best \: regards}[/tex] !

~TheAnimeGirl

Answer:

4 units left : subtract 4 from each x coordinate

3 units down : subtract 3 from each y coordinate

Step-by-step explanation:

Answer:

3.4

Step-by-step explanation:

Equation:

12x = 40.8

Isolate the variable:

x = 40.8/12

x = 3.4

Answer:

x = 3.4

Step-by-step explanation:

12x = 40.8

40.8 / 12 = 3.4

x = 3.4

[tex]3^4 * 3^3[/tex]

Exponent rule states that you can add the powers.

which means that the answer is C

[tex]3^7[/tex]

Hope this helped.

Answer: [tex]x[/tex] = [tex]\frac{17}{7}[/tex]

Step-by-step explanation:

Hey there! I will give the following steps, if you have any questions feel free to ask me in the comments below.

Step 1: Expand.

−2[tex]x[/tex] − 18 = 5[tex]x[/tex] − 35

Step 2: Add 2[tex]x[/tex] to both sides.

−18 = 5x − 35 + 2[tex]x[/tex]

Step 3: Simplify 5[tex]x[/tex] − 35 + 2[tex]x[/tex] to 7[tex]x[/tex] − 35.

−18 = 7[tex]x[/tex] − 35

Step 4: Add 35 to both sides.

−18 + 35 = 7[tex]x[/tex]

Step 5: Simplify −18 + 35 to 17.

17 = 7[tex]x[/tex]

Step 6: Divide both sides by 7.

[tex]\frac{17}{7}[/tex] = [tex]x[/tex]

Step 7: Switch sides.

[tex]x[/tex] = [tex]\frac{17}{7}[/tex]

~I hope I helped you! :)~

Answer:

the more pages she read, the more time she read for.

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

Plz mark brainliest

The error is he set the factored expressions equal to each other(option3).

In a graph, the point where the line or curve crosses the axis is called the intercept. If a point crosses the x-axis it is x-intercepts. If a point crosses y-axis it is y-intercepts.

For finding x-intercepts of the given function,

First we have to factorize the given equation and then find the x values .

In [tex]f(x)=x^{2} +4x+3[/tex]

When we factorize we get , (x+3) and (x+1)

i.e., x+3=0⇒x=-3, x+1=0⇒x=-1.

That is x- intercept is -1 and -3.

Instead of this step Mathieu equated x+3=x+1.

This makes an error.

Hence, the error is he set the factored expressions equal to each other.

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Answer:

29 and 31

Step-by-step explanation:

Let

x = the first odd number

x + 2 = the second odd number

seven times the smaller number is 17 more than six times the larger

7*x = 17 + 6(x + 2)

7x = 17 + 6x + 12

Collect like terms

7x - 6x = 29

x = 29

x + 2 = 29 + 2

= 31

Check:

7*x = 17 + 6(x + 2)

7*29 = 17 + 6(29 + 2)

203 = 17 + 6(31)

203 = 17 + 186

203 = 203

Therefore, the two consecutive odd numbers are 29 and 31

Answer: D = Q/A - N

Step-by-step explanation: u just divide both sides by A - N

Answer:

(−2, 11/2)

Step-by-step explanation:

the answer is (-2, 11/2)

Answer:

Negative

Step-by-step explanation:

because it's going down towards the right.

Answer:

g = 1.6t

Step-by-step explanation:

Here, we want to select the equation that shows the correct relationship between g and t

We are told that after 6 seconds, we have 9.6 gallons of water

So the amount per second will be 9.6/6 = 1.6 gallons per second

So the relationship between the two will be

g = 1.6t

Where t is the time and g is the gallons

Answer:

EF ≈ 1.98

Step-by-step explanation:

Using the sine ratio in the right triangle

sin26° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{EF}{FD}[/tex] = [tex]\frac{EF}{4.5 }[/tex] ( multiply both sides by 4.5 )

4.5 × sin26° = EF

4.5 × 0.44 = EF , that is

EF ≈ 1.98 ( to 2 dec. places )

Answer:M O N K E

Step-by-step explanation:because monke smort

Answer: Monkeys!

Step-by-step explanation: Monkeys are sometimes smarter than humans! There is also 5 of them

Answer:

14

Step-by-step explanation:

Answer:

40 %

Step-by-step explanation:

40% off - 31.20/52 = .60 which means a 40% discount

hope this helps! :)

Answer:

78 Degrees

Step-by-step explanation:

Two supplementary angles:

4x + 2 + 3x + 3 = 180

Combine like terms:

7x + 5 = 180

Simplify

7x = 175

x = 25

(25)3 + 3 = 75 + 3 = 78

Angle DCB is 78 degrees

Answer:

78 Degrees

Step-by-step explanation:

Two supplementary angles:  (GIven)

4x + 2 + 3x + 3 = 180

Combine like terms:

7x + 5 = 180

Simplify

7x = 175

x = 25

(25)3 + 3 = 75 + 3 = 78

So,

Angle DCB is 78 degrees.

I hope it will help you :)

Answer:

(5, -1)

Step-by-step explanation:

The y coordinate increases by 3.

Answer:

-5,1

Step-by-step explanation:

the distance is s mil lion

Answer:

million

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

Step 1:

6 = 3x - 9       Equation

Step 2:

15 = 3x      Add 9 on both sides

Step 3:

x = 15 ÷ 3      Divide

Answer:

x = 5

Hope This Helps :)

Answer: 5

Step-by-step explanation:

6 = 3x - 9

+9      + 9

15 =  3x

/3     /3

5 = x

Answer:

1/2 is BIGGER than 20%

Step-by-step explanation:

1/2 is the same as 50% and 50% is greater than 20%

(Percent is out of 100 so half of 100 is 50.)

Hope that helps and have a great day!

Answer:

Well if it is a sale taking place then 1/2 off is less than 20% off

However if the prices are being increased then 1/2 more is bigger than 20% more.

Step-by-step explanation: