Solve 3(x-5)=18

10 points help plz

Answers

Answer 1

Answer:

x=1

Step-by-step explanation:

To solve this question we will have to open the bracket first

So let's solve

3(x-5)=18

Open the bracket

3x-15=18

Add 15 to both sides

3x=3

Make x the subject of formula by dividing both sides by 3

x=1

So the final answer is 1

Answer 2

Answer:

x = 11

Step-by-step explanation:

First Expand the Brackets

3x-15 = 18

Then add 15 onto both sides

3x = 33

Divide both sides by 3

x = 11


Related Questions

Figure LMNP will be reflected across the y-axis. Place the point on the graph that represents
point N'

Answers

The point on the graph where N ' will be located after the reflection would be C. (-2, -3).

How to reflect across the y - axis ?

To find the image of point N (2, -3) after it is reflected across the y-axis, you need to change the sign of its x-coordinate while keeping the y-coordinate the same.

The reflection across the y-axis essentially involves switching the point's position horizontally.

So, for point N (2, -3), its image N' will have coordinates (-2, -3).

Therefore, the point that represents N' after the reflection across the y-axis is (-2, -3) on the graph.

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Casey buys and sells used books at his bookstore. He prices all of his used books with a 50% gross profit margin. To do so, he uses the equation: p = 1.5c, where p is price and c is cost. Is this correct? explain.

Answers

Answer:

Yes

Step-by-step explanation:

Hi, the expression is correct.

Since she wants to price (p) her used books with a 50% gross profit, to do this she has to multiply the cost of the books (c ) by a percent increase (1 + %/100).

So, for a 50% gross

p = (1 + 50/100) c = (1+ 0.5 )c  

p= 1.5c

Feel free to ask for more if needed or if you did not understand something.

Which equation represents the area of one base of a cylinder if the radius is doubled?

Answers

Answer:

If the radius is doubled, then the area of one base of a cylinder  quadrupled and the equation is:

[tex]\boxed{A_{b1}=4\pi r^2}[/tex]

Explanation:

The surface area of a solid is the total area of its outer surface. For a cylinder whose radius of its circular base is [tex]r[/tex], and height [tex]h[/tex], then the surface area (S) can be calculated as:

[tex]S=\text{Surface area of base 1}+\text{Surface area of base 2}+\text{Surface area of the side} \\ \\ S=A_{b1}+A_{b2}+A{s} \\ \\ S=\pi r^{2}+\pi r^{2}+2\pi rh \\ \\ S=2\pi r^{2}+2\pi rh \\ \\ \\ Because: \\ \\ \text{Surface area of base 1}=\text{Surface area of base 2} \\ \\ \\ Where: \\ \\ A_{b1}:\text{Surface area of base 1} \\ \\ A_{b2}:\text{Surface area of base 2} \\ \\ A_{s}:\text{Surface area of the side}[/tex]

So, if the radius is doubled then the area of one base is:

[tex]A_{b1}=\pi (2r)^{2} \\ \\ A_{b1}=\pi (4r^2) \\ \\ \boxed{A_{b1}=4\pi r^2}[/tex]

How do I determine a domain of a function

Answers

Answer:

See below.

Step-by-step explanation:

The domain is the set of numbers that can be substituted into the x-variable.

In a polynomial function of any degree, the domain is the set of real numbers.

If a function has x in the denominator or x in a square root, you must see which values of x make the function undefined, and exclude those values from the domain.

You are trying to save $25
a week to buy a new CD
player. During the last 4
weeks you have saved $35,
$25, $16, and $32. How much
do you need to save this
week to average $25 for the
5 weeks?

Answers

17 dollars because if you add 35, 25, 16, and 32 the total will be 108 and since you are trying to average 25 over the span of five weeks you multiply 5 x 25 which equals 125 and you subtract that by 108 and the answer you are left with is 17.

length of the median CP

Answers

Given:

ΔABC [tex]\sim[/tex] ΔDEF

To find:

The length of median CP

Solution:

In ΔABC,

AP = 12, BP = 12 and PC = 3x - 12

In ΔDEF,

DQ = 16, QE = 16 and FQ = 2x + 8

If two triangles are similar, then their median is proportional to the corresponding sides.

[tex]$\Rightarrow \frac{AP}{DQ} =\frac{PC}{FQ}[/tex]

[tex]$\Rightarrow \frac{12}{16} =\frac{3x-12}{2x+8}[/tex]

Do cross multiplication.

[tex]$\Rightarrow 12(2x+8)=16(3x-12)[/tex]

[tex]$\Rightarrow 24x+96=48x-192[/tex]

Add 192 on both sides.

[tex]$\Rightarrow 24x+96+192=48x-192+192[/tex]

[tex]$\Rightarrow 24x+288=48x[/tex]

Subtract 24x from both sides.

[tex]$\Rightarrow 24x+288- 24x=48x- 24x[/tex]

[tex]$\Rightarrow 288=24x[/tex]

Divide by 24 on both sides.

12 = x

Substitute x = 12 in CP.

CP = 3(12) - 12

     = 36 - 12

     = 24

The length of median CP is 24.

x + 4y = -3 x + 7y = -12

Answers

Answer:

y = -3, x = 9

Step-by-step explanation:

ISOLATE THE X

step 1) subtract 4y from both sides.

x + 4y - 4y = -3 - 4y

step 2) simplify

x = -3 - 4y

step 3) substitute x = -3 - 4y

-3 - 4y + 7y = -12

ISOLATE THE Y

step 4)  Add similar elements: -4y + 7y = 3y

-3 - 4y + 7y = -12

step 5) Add 3 to both sides

-3 + 3y + 3 = -12 + 3

step 6) Simplify

3y = -9

step 7) Divide both sides by 3

3y/3 = -9/3

step 8) you now know y = -3

step 9) substitute y = -3 in for x = -3 - 4y

x = -3 - 4(-3)

step 10) negative times a negative equals a positive

x = -3 + 12

step 11) add -3 by 12 to get x = 9

step 12) you now have found the answer x = -3 and y = 9

The question involves solving a system of linear equations using the elimination method, resulting in the solution [tex]\(x = 9, y = -3\).[/tex]

The problem provided is a system of linear equations. Here's how to solve the system:

x + 4y = -3

x + 7y = -12

Subtract the first equation from the second:

[tex]\((x + 7y) - (x + 4y) = -12 - (-3)\)[/tex]

[tex]\(3y = -9\)[/tex]

Now, solve for y:

[tex]\(y = -3\)[/tex]

Substitute y back into the first equation to find x:

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

[tex]\(x - 12 = -3\)[/tex]

[tex]\(x = 9\)[/tex]

So the solution is [tex]\(x = 9, y = -3\)[/tex].

The procedure used is known as the elimination method, which is a technique to solve simultaneous linear equations.

Create a cylinder with a height of 9 cm
and a radius of 5 cm.

Notice that the estimated volume calculation is 706.9 cm3.

What do you notice about the volume?

Answers

Answer:

its four times larger

Step-by-step explanation:got it right on the test

A certain number was multiplied by 4. Then, this product was divided by 19.4. Finally 6.4 was subtracted from this quotient, resulting in a difference of -8.4, What was this number?

Answers

Answer:

-9.7

Step-by-step explanation:

we can do the opposite of everything that was done to get the resulting difference

so......

-8.4+6.4=-2

-2x19.4=-38.8

-38.8/4=-9.7

and to double check.......

-9.7x4=-38.8

-38.8/19.4=-2

-2-6.4=-8.4

Box plots for chapter 6 test scored of two classes are shown.

Answers

Answer:

There is a 5% difference

Step-by-step explanation:

80%-75%=5%


Start at the bench. Move 6 units right and 3 units up. Where do you end up?

Answers

Answer:

You end up at Wcdonalds

Step-by-step explanation:

The reason why you would end up at Wcdonalds is pretty simple, but first we would have to answer why the character is starting on a bench. In most stories or games a story might start with a character on a bench for multiple reasons; the character was simply napping there, or was simply sitting down for a sip of coffee, but if a story started off as such it would't grab anyone's attention. So what does that imply, simple, the character is there because he/she got mugged and then got knocked out and was placed on the bench so the author could create a feeling of suspense in the story. At this point you might be wondering, what the heck am I talking about, what does this have to do with Wcdonalds and not "Mcdonalds" - the answer is simple. After the character (animal, human, alien, whatever) wakes up they supposedly move 6 units right and 3 units up, what does that imply, it suggest that the character is inputting a famous cheat code! And what does one do after entering the famous cheat code, Mr.GameAndWatchcode00021190, they teleport to Mcdonalds! Unluckily though, the consequences of being knocked out prior to the cheat code input has made the character see the M in Mcdonalds upside down, a W!

Anyways that's the answer to your question - You're Welcome

How can you use the number of inches in one foot to find the number of square inches in one square foot?

Answers

There are 12 inches in 1 foot. You know that the area of a square is or base times hight. A square has the same base and height. So we can say (base)^2. If the base is 12 inches in this case 12^2 = 144. Answer: 144 square inches.


A tritone is...

A. any three notes that, when played together, sound pleasing.

B. a chord consisting of three notes.

c. an interval that played an important part in 12th century music
compositions.

D. an interval of three whole steps.

Answers

Answer:

A

Step-by-step explanation:

A circle is centered on point B. Points A. C and D lie on its circumference.

If angle ABC measures 124", what does angle ADC measure​

Answers

Answer:

So, ADC = 124/2 => ADC = 62°

Step-by-step explanation:

If ABC i.e angle of centra = 124°

If ABC i.e angle of centra = 124°Then, we know that angle at any where of Circle is 1/2 if central angle

If ABC i.e angle of centra = 124°Then, we know that angle at any where of Circle is 1/2 if central angle So, ADC = 124/2 => ⛰ ADC = 62°.

Thank You ☺️ ☺️.

Make It Brainlist Answer Please....

Angle ABC is 124 degrees.  That makes a linear pair with angle DBC, which must be the supplement 56 degrees.

That's the unique angle in an isosceles triangle.  The others must be (180-56)/2=62.

Answer:    62°

which equation cab be used to solve for x in the triangle below ?

Answers

Answer:

AA

Step-by-step explanation:

The quotient of 48 and x

Answers

Answer: Quotient means when you divided a number by another number.

Our first number will be 48 and also in this problem lets have that second "number" be x.

So 48/x is the quotient.

Final answer:

The quotient of 48 and x represents the mathematical operation of 48 divided by x, where x cannot equal 0.

Explanation:

The phrase 'the quotient of 48 and x' represents a mathematical operation which refers to dividing 48 by a certain number (x). In mathematical terms, it would be written as 48/x. For example, if x were to equal 6, the quotient of 48 and 6 would be 8, since 48 divided by 6 equals 8. It is crucial to remember, however, that x cannot be 0, as division by zero is undefined in mathematics.

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Given the box plot, will the mean or the median provide a better description of the center?

box plot with min at 6, Q1 at 7.5, median at 8, Q3 at 23, max at 32.5

The mean, because the data distribution is symmetrical
The median, because the data distribution is symmetrical
The mean, because the data distribution is skewed to the right
The median, because the data distribution is skewed to the right

Answers

Answer:

The median, because the data distribution is skewed to the right

Step-by-step explanation:

If the longer part of the box is to the right (or above) the median, the data is said to be skewed right. If the longer part is to the left (or below) the median, the data is skewed left.  The data is skewed right.  The median would be a better estimate, because one or two numbers on the high end will cause the  numbers to be skewed to the right, and the mean to be high

Answer:

Last one:

The median, because the data distribution is skewed to the right

Step-by-step explanation:

Q1: 7.5

Q2: 8

Q3: 23

Q2 - Q1 = 8 - 7.5 = 0.5

Q3 - Q2 = 23 - 8 = 15

Since Q3 - Q2 > Q2 - Q1,

data is positively (right) skewed

Skeweness occurs because of outliers therefore mean is not a suitable option. Median will provide a better description of the centre

Solve the equation, 3x + 12 = 5x - 4, for x.

Answers

The answer is X = 8. Substitute it in to check

What is 9 divided by 4 in unit form

Answers

The answer is 2.25 now you can round that to 2.30 or you can stick with 2.25

The unit form of 9/4 is 1/4 + 1/4+ 1/4+ 1/4+ 1/4+ 1/4+ 1/4+ 1/4+ 1/4.

What is a unitary method?

A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.

Given, We have to express 9 divided by 4 in unit form.

We know a unit fraction is when we have 1 in the numerator.

So, 9/4 = 9×(1/4).

= 1/4 + 1/4+ 1/4+ 1/4+ 1/4+ 1/4+ 1/4+ 1/4+ 1/4.

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Just trying to finish this class! Helppp

Answers

Answer:

I think it is the second one

the snowfall total two years ago was 10.2 inches. last years was 20% grater. what’s last years snowfall total

Answers

12.24 inches

you would do 10.2 x 1.2

Answer: 12.24

Step-by-step explanation:

Can some one help me with this math problem and explain their self's as well?

Answers

Answer:

20 side polygon: 180 x (20 -2)

Step-by-step explanation:

A n side polygon can be divided into n-2 triangles

each triangle has 180°

n-2 triangles have 180 x (n-2) degrees

Jack has 5 toy trucks. Each truck has 2 doors and 4tires. Which statement describes the ratio of doors to tires on each truck?

Answers

The ratio of doors to tires on each of Jack's truck is 1:2.

Each truck has 2 doors and 4 tires.

So, the ratio of doors to tires is 2:4.

Simplifying this ratio gives us 1:2.

the circumference of r=5 units

Answers

Step-by-step explanation:

Given

Radius (r) = 5 units

π = 3.14

Now

Circumference

= 2πr

= 2 * 3.14 * 5

= 31.4 units

Answer:

31.4 units

Step-by-step explanation:

Circumference of a circle = 2 # r

Where pi(#) = 3.14

r = radius = 5 units

Circumference = 2 × 3.14 × 5

Circumference = 10 × 3.14

Circumference = 31.4 units

I hope this was helpful, please rate as brainliest

There are 18 girls in a basketball team. If the starting lineup consists of 5 players, then how many possible starting lineups are there?

A. 90 lineups
B. 1,889,568 lineups
C. 1,028,160 lineups
D. 8,568 lineups



Please help!!! I’m so confused
:(

Answers

Option d. There are 8,568 possible starting lineups

The number of girls n, is given as 18 and the number of players, r is 5

To find the number of possible starting lineups from 18 girls when selecting 5 players, we can use the combination formula

[tex]C(n, r) = \dfrac{n!}{r! * (n - r)!}[/tex]

Substitute the values for n and r into the equation

[tex]C(18, 5) = \dfrac{18!}{5! * (18 - 5)!}[/tex]

[tex]C(18, 5) = \dfrac{18!}{5! * 13!}[/tex]

Expand

[tex]C(18, 5) = \dfrac{18 * 17 * 16 * 15 * 14 * 13!}{5! * 13!}[/tex]

[tex]C(18, 5) = \dfrac{18 * 17 * 16 * 15 * 14}{5!}[/tex]

[tex]C(18, 5) = \dfrac{18 * 17 * 16 * 15 * 14}{5 * 4 * 3 * 2 * 1}[/tex]

C(18, 5) = 1028160/120

C(18, 5) = 8568

zack and are going to the fair. zack went on 3 rides and played 5 games and paid a total of $14. marissa paid $16 for 4 rides and 4 games. find the price of one ride

Answers

1 ride is $3 and 1 game is $1

Price of one ride is equals to $3 for the given system of equations.

What is the system of equations?

" System of equations is a finite set of equations for which we find the common solution."

According to the question,

x represents the number of rides

y represents the number of games

Two situations are given for which we need to find the system of equations .

Situation 1: Zack went for 3 rides and played 5 games and paid $14, which represents the equation:

3x +5y = 14

⇒ 5y = 14 - 3x

⇒ y = ( 14 - 3x) / 5

Situation 2: Marissa went for 4 rides and played 4 games and paid $16, which represents the equation:

4x +4y = 16

Substitute the value y in situation 2 we get,

4x + 4[( 14 - 3x) / 5] =16

⇒ x  = 3

Hence, price of one ride is equals to $3 for the given system of equations.

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there were 15 girls and 25 boys in a science club . what percent of the members were girls?

Answers

Answer:

The answer is 37.5%

Answer:

37.5%

Step-by-step explanation:

add 15+20 =40     15/40 *100(we use 100 because  a percent is always out of 100.) 0.375*100. = 37.5

A line passes through (3, 7) and (6, 9). Which equation best represents the line? (4 points)


y = 3 over 2x + 5

y = 2 over 3x + 5

y = 3x + 2

y = 2 over 3x + 2

Answers

Answer: i think is A or B

Step-by-step explanation:

[tex]y=\frac{2}{3} x+5[/tex]

Answer:

I know it is not A because I just tried the quiz but the other answer said either A or B so I am thinking it is B. I am very Sorry if I am wrong.

6 + (-2)3 ∙ (-4 + 1).

Answers

Answer:

1

Step-by-step explanation:

6+(-2)3-(-4+1)

6+(-8)-(-4+1)

6+(-8)-(-3)

(-2)-(-3)

=1

Whats the answer??? Pleaseeee!!!!

Answers

To find the 20th term in this sequence, we can simply keep on adding the common difference all the way until we get up to the 20th term.

The common difference is the number that we are adding or subtracting to reach the next term in the sequence.

Notice that the difference between 15 and 12 is 3.

In other words, 12 + 3 = 15.

That 3 that we are adding is our common difference.

So we know that our first term is 12.

Now we can continue the sequence.

12 ⇒ 1st term

15 ⇒ 2nd term

18 ⇒ 3rd term

21 ⇒ 4th term

24 ⇒ 5th term

27 ⇒ 6th term

30 ⇒ 7th term

33 ⇒ 8th term

36 ⇒ 9th term

39 ⇒ 10th term

42 ⇒ 11th term

45 ⇒ 12th term

48 ⇒ 13th term

51 ⇒ 14th term

54 ⇒ 15th term

57 ⇒ 16th term

60 ⇒ 17th term

63 ⇒ 18th term

66 ⇒ 19th term

69 ⇒ 20th term

This means that the 20th term of this arithemtic sequence is 69.

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