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4 years ago

Simplify by combining like terms: 2x + 3x + 7

Mathematics

2 answers:

DaniilM [7]4 years ago

7 0

Answer: 5x+7

Step-by-step explanation:

2x+3x+7

5x+7

vesna_86 [32]4 years ago

5 0

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{5x + 7}}}}}$

Step-by-step explanation:

$\sf{2x + 3x + 7}$

Like terms are those which have the same base.Only the coefficients of like terms can be added or subtracted

$\longrightarrow{ \sf{5x + 7}}$

Hope I helped!

Best regards! :D

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How many different 7-place license plates are possible when 3 of the entries are letters and 4 are digits? Assume that repetitio

timofeeve [1]

Answer:

There are 6,151,600,000 different 7-place license plates are possible when 3 of the entries are letters and 4 are digits,

Step-by-step explanation:

For each of the entries which are letters, there are 26 possible outcomes.

For each of the entries which are digits, there are 10 possible outcomes.

These outcomes can be permutated.

For example, ABC1234 is a different outcome than A1B2C34. This means that we need to use the permutations formula.

The number of permutations of n, divided into two groups of size a and b, is:

$P_{a,b}^{n} = \frac{n!}{a!b!}$ .

In this problem, we have a permutation of 7, divided into a group of 4(digits) and 3(letters).

How many different 7-place license plates are possible when 3 of the entries are letters and 4 are digits?

This is $P_{3,4}^{7}*(26)^{3}*10^{4} = 35*(26)^{3}*10^{4} = 6,151,600,000$

There are 6,151,600,000 different 7-place license plates are possible when 3 of the entries are letters and 4 are digits,

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3 years ago

You are planning a movie marathon. Each movie lasts 3/2 hours. You want to watch 4 movies nonstop. How many hours will your movi

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Answer:

Your movie marathon will last 6 hours.

Step-by-step explanation:

This question can be solved using a rule of three.

Each movie lasts $\frac{3}{2} = 1.5$ hours. How much do 4 movies last?

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Your movie marathon will last 6 hours.

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3 years ago

Luke buys a certain brand of cereal that costs $11 per box. Luke changes to a super-saving brand of the same size. The equation

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Answer:

See below.

Step-by-step explanation:

Part A

"y = 11x is the function for the original boxes that he bought...it was $11 per box.

y = 9x is the function for the super saving brand...it is $9 per box

so there is a $2 difference between the original and the super saver."

Part B

"original box.....6 cereals

y = 11(6)

y = 66

super saver....6 cereals

y = 9(6)

y = 54

66 - 54 = 12.....so Luke saves $12 per month by buying the super saver brand."

The answer is also here:

brainly.com/question/1572338

-hope it helps

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2 years ago

Three forth of a number excceed its one third by 15, find the number

lyudmila [28]

The required value of x is 36

Step-by-step explanation :

Let the required number be x.

Three fourth of number = (3/4)x

One third of number = (1/3) x

According to the question ;

3x/4 = x/3 + 15

→ 3x/4-x/3 = 15

→ 9x - 4x / 12 = 15

→ 5x = 15 x 12

⇒ x = 180 / 5

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<h2>Hope this answer helps you..!!!</h2>

8 0

3 years ago

I need help with 12(y+8)

Alik [6]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Simplify by combining like terms: 2x + 3x + 7​

Simplify by combining like terms: 2x + 3x + 7