Mathematics High School

Simplify the expression 3x + 6x

Answers

Answer 1

Answer:

Step-by-step explanation:

3x + 6x

= 9x

Answer 2

Answer:

This is really easy:

Answer: 9x

Step-by-step explanation:

Just add the numbers first:

3 + 6 = 9

And because they both have a x you are able to combine those two making it:

Hope this helps :)

Related Questions

Let C be between D and E. Solve for x
DC = 5x + 8
CE = 3x + 5
DE = 61

Answers

DE/2 = 30.5
CE=30.5
DC=30.5

3x + 5 = 30.5
3x = 30.5 - 5
3x = 25.5
25.5/3 =8.5
x=8.5

On a map, 2 cm represents 30 mi. The actual distance between two towns
is 75 mi. What is the distance between the towns on the map? USE
NUMBERS ONLY*

Answers

Answer:

5 cm

Step-by-step explanation:

step one:

Given that the scale of the map is

2cm to represent 30 miles

That is every 1 cm is 15 miles in reality

step one:

what we are solving for is the distance in cm on the map so,

1cm rep 15miles

xcm rep 75miles

cross multiply

Xcm= 75/15

X= 5 cm

hence on the map 75miles distance between the two towns is seen as 5 cm

Point A is located at (−5, 2) on a coordinate grid. Point A is translated 4 units to the right and 2 units down to create point A'. Which measurement is closest to the distance between point A and point A' in units?

Answers

Answer:C) 4.5 units

Step-by-step explanation:

Name the y-intercept

Answers

(0,-9) is the y intercept

(0,9) is the y-intercept

If RS=5, ST=15, what is the length of RT? Show your work

Answers

Answer:

20 Units

Step-by-step explanation:

RS plus ST equals RT.

Take this visual:

_____/_______________

R S T

5 un 15 un

Using the segment addition postulate, we can tell RS+ST=RT

5+15=20

Hope this helps :-)

Solve.
4 + x/7 = 2

A) -14
B) 10
C) 12
D) 42

Answers

Answer:

the answer is A

-14

Step-by-step explanation:

subtract 4 in both sides

Answer:

X= -14

Step-by-step explanation:

SUBTRACT 4 FROM BOTH SIDES OF THE EQUATION.

SIMPLIFY

Multiply all terms by the same value to eliminate fraction denominators

Cancel multiplied terms that are in the denominator

Multiply the numbers

THEN AFTER YOU DO THESE STEPS YOU WILL GET THE SOLUTION ABOVE.

the mean of 49 51 49 51 51 49 please help

Answers

Answer:

the mean is 50

Step-by-step explanation:

add up all the numbers which equals 300 then divide but the amount of numbers in this is 6 so that gives you 50

Answer:

50 is the mean

Step-by-step explanation:

When it ask for mean it ask you to add up all the numbers and divide by how many numbers their are. Their 6 numbers added together to make the total of 300.

49+51+49+51+51+49 = 300

300 / 6 = 50

185=-5(10r+3) please help me with this question

Answers

Steps to solve:

185 = -5(10r + 3)

~Distribute right side

185 = -50r - 15

~Add 15 to both sides

200 = -50r

~Divide -50 to both sides

-4 = r

Best of Luck!

Answer:

r=-4

Step-by-step explanation:

185= - 5 10 r + 3

37= 10 r + 3

10r = - 3 - 37

10 r = - 40

Why can you not combine the 8a2 and 8a?

Answers

Answer:

you can't add or subtract numbers that don't have the same variable or the same exponent

Answer:

You cannot combine the terms [tex]8a^2[/tex] and [tex]8a[/tex] because they are not like terms, which are terms that consist of both the same power, and the same variable. Seen with the two terms given, they both share the same variable ([tex]a[/tex]), but not the same power ([tex]2[/tex]).

An airplane can fly at a rate of 600 miles per hour. How fast does an airplane travel per minute?

Answers

(There are 60 minutes in 1 hour)

1)First we can start of by dividing 600 by 60

2)You should get the answer of 10

Answer: 10 miles per minute.

Answer: It travels 10 miles per minute

Step-by-step explanation:

Divide 600 by 60

Aline passes through (2, -1) with slope 3.
What is the equation of the line in slope-intercept form?

Answers

the equation is y = 3x-7

-6(2)divided by (-3)

Answers

Answer:

Step-by-step explanation:

Following PEMDAS order:

-6*2=-12

-12/-3=4

Answer:

-6(2)(-3)

-3+2

-5

Step-by-step explanation:

The profit that a company makes selling an item (in thousands of dollars) depends on the price of the item (in dollars). If p is the price of the item, then three equivalent forms for the profit are

Standard form: - 2 p^2 + 24p - 54

Factored form: -2(p - 3)(y-9)

Vertex form: -2(p-6)^2 + 18.

Which form is most useful for finding a. The prices that give a profit of zero dollars?

b. The profit when the price is zero?

c. The price that gives the maximum profit?

Answers

Answer:

Step-by-step explanation:

If the profit of a company made by the company is in the form a quadratic expressions but in the different forms as given in the question.

a). The prices that give a profit of zero dollars.

Expression that is most useful,

Factored form: -2(p - 3)(p - 9) = 0

p = 3, 9

b). The profit when the price is zero .

Standard form:

Profit = -2p² + 24p - 54 = 0

-p² + 12p - 27 = 0

-p² + 3p + 9p - 27 = 0

-p(p - 3) + 9(p -3) = 0

(-p + 9)(p - 3) = 0

p = 3, 9

c). The price that gives the maximum profit.

Vertex form: -2(p - 6)² + 18

Vertex of the given expression → (6, 18)

Maximum profit will be at p = 6.

Therefore, profit = -2(6 - 6)² + 18 = 18

How do you solve this equation? (k/4 is a fraction)

5 = 12 + k/4

Answers

Subtract 12 from both sides

5 - 12 = k/4

Simplify 5 - 12 to -7

-7 = k/4

Multiply both sides by 4

-7 * 4 = k

Simplify -7 * 4 to -28

-28 = k

Switch sides

k = -28

Place commas in the number 4978.

Answers

Answer:

4,978 because after 3 digits you have to put a coma

Answer:

4,978

Step-by-step explanation:

Solve for x. *
2 (x - 3) = 5x + 23

Answers

Answer:-29/3

Step-by-step explanation:

distribute the left side: 2x-6 = 5x+23

combine like terms: -3x=29

divide by -3 on both sides: x= -29/3

Hey! I'm not sure what the answer is to this..Mind helping me out?

Answers

Answer:

Step-by-step explanation:

A perfect square has all side lengths the same so...

9*9=81

Answer:
81

Explanation:
A perfect square has lengths that are all the same, so if one side is 9 the other sides must be 9. Then using the formula to find area (A=LxW) we can multiply 9 x 9 to get a area of 81.
A=9x9
A=81

The gcf of 36 and 60

Answers

Answer:

the gcf is 12

Step-by-step explanation:

.............

Answer:

The gcf is 12!

Given 18 and 3, which of the following could be the third side of a
triangle?
9
12
10
16

Answers

16 because the answer has to be bigger than 18 minus 3

Tyler and Han is trying to solve this system by substitution:
x + 3y = -5
9x + 3y = 3
Tyler's first step is to isolate x in the first equation to get x = -5 - 3y. Hans first step is to isolate 3y in the first equation to get 3y = -5 - x show that both first steps can be used to solve the system and will yield the same solution.

Answers

Answer:

The communicative property shows how these problems should both work therefore they can both be answered by different equations

Step-by-step explanation:

Answer:

The communicative property shows how these problems should both work therefore they can both be answered by different equation.

Step-by-step explanation:

2 time what makes 19.98?

Answers

Answer:

9.99

Step-by-step explanation:

x=3 (-3x-4)-6x. if x=3

Answers

-31 is the answer because you would do (-3(3)-4) then subtract -6(3).
(-9-4)-18=-31

In which quadrant is the coordinate pair (-11, 1) located?
A. IV
b. I
c. II
d. III

Answers

The coordinate pair (-11, 1) is located on quadrant II

What is the midpoint of points (1,1) and (-6,-8)

Answers

Answer:

(-2.5, -3.5)

Step-by-step explanation:

In order to find midpoint, you must add both x coordinates then divide by two and add both y coordinates then divide by two.

1 + (-6) = -5

-5/2 = -2.5

1 + (-8) = -7

-7/2 = -3.5

How many multiples of 5 are between 7999 and 10,000?

Answers

Answer:

There are 40 multiples of 5.

Step-by-step explanation:

You take 10000 and subtract 8000 = 2000.

Then divide 2000 by 5.

5-3x(-2)+[5-3x(-3)+1]

Answers

Answer:

15x + 11

Step-by-step explanation:

round 27.68 to the nearest tenth

Answers

Answer:

27.7

Step-by-step explanation:

For this problem, we will simply use standard rounding conventions to round the number to the nearest tenth.

If the number after the target, the hundreths place in this case, is between 0 and 4, we won't change the tenths place. If the number is between 5 and 9, we will increment the tenths place by one.

So for our number, 27.68, 8 is between 5 and 9 so we will increment the tenths place by one for the round.

Hence, our rounded answer for the nearest tenth is 27.7.

Cheers.

Your answer is 27.7.

Help quick please you don’t have to show work

Answers

Answer:

2nd

Step-by-step explanation:

Answer:

B. Between Step 1 and Step 2, combining like terms is used.

Given f(x) = 4(x - 8), determine the value of f(10).

Answers

Answer:

f(10) = 8

Step-by-step explanation:

f(x) = 4(x - 8)

Let x = 10

f(10) = 4 ( 10-8)

= 4 ( 2)

= 8

Here, we are provided with a polynomial in x and it's general value in variable X is also given.

[tex]f(x) = 4( x - 8)[/tex]

We need to find the value of f(10)

For this, we need to substitute the value of x with 10, because we are required to find f(10)

Given polynomial, f(x) = 4(x - 8), Putting value of x

[tex]f(10) = 4(10 - 8)[/tex]

[tex]f(10) = 4(2)[/tex]

[tex]f(10) = \boxed{ \red{8}}[/tex]

This is our required answer !!

#CarryOnLearning

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Pls help plssssssssss

Answers

Answer:

Step-by-step explanation:

Hi!

I already solved it here.

https://brainly.com/question/17314856

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