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1 year ago

Simplify 7x²-x² how to simplify this maths question

Mathematics

1 answer:

kondaur [170]1 year ago

6 0

Hi student, let me help you out! :)

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We are asked to simplify the expression $\large\pmb{7x^2-x^2}$ .

$\triangle~\fbox{\bf{KEY:}}$

Combine like terms! :)

That's exactly what we need to do - combine like terms.

So, we subtract:

$\star~\large\pmb{7x^2-x^2}$

Which gives us:

$\star~\large\pmb{6x^2}$

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

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1. The Eco Pulse survey from the marketing communications firm Shelton Group asked individuals to indicate things they do that m

SVETLANKA909090 [29]

Answer:

1.) 0.54 ; 0.46

2.) 0.50 ; 0.40 ; 0.05 ; 0.85 ; 0.15

Step-by-step explanation:

A = feel guilty about wasting food ; P(A) = 0.39

B = feel guilty leaving lights on ; P(B) = 0.27

Probability of feeling guilty for doing both = 0.12

P(AnB) = 0.12

1a.) What is the probability that a randomly selected person will feel guilty for either wasting food or leaving lights on when not in a room or both (to 2 decimals)?

P(AuB) = P(A) + P(B) - P(AnB)

= 0.39 + 0.27 - 0.12

= 0.54

1b.) What is the probability that a randomly selected person will not feel guilty for either of these reasons (to 2 decimals)?

P(AuB)' = 1 - P(AuB)

P(AuB)' = 1 - 0.54

P(AuB)' = 0.46

2.)

n(ACC) = 10

n(SEC) = 8

n(total) = 20

n(ACC n SEC) = 1

a. What is the probability the ACC will have a team in the championship game (to 2 decimals)?

n(ACC) / n(Total) = 10 /20 = 0.50

b. What is the probability the SEC will have a team in the championship game (to 2 decimals)?

n(SEC) / n(Total) = 8/20 = 0.40

c. What is the probability the ACC and SEC will both have teams in the championship game (to 2 decimals)?

1 /20 = 0.05

d.)

P(AuB) = P(A) + P(B) - P(AnB)

= 0.50 + 0.40 - 0.05

= 0.85

e.)

P(AuB)' = 1 - P(AuB)

P(AuB)' = 1 - 0.85

= 0.15

3 0

3 years ago

The double number line shows that to make 4 apple pies takes 14 pounds of apples.Select the double number line that correctly la

Mariulka [41]

Answer:

The number of pounds of apples that are needed to make

1 pie = 3.5 pounds of Apples

2 pies = 7 pounds of Apples

3 pies = 10.5 pounds of Apples

Step-by-step explanation:

The double number line shows that to make 4 apple pies takes 14 pounds of apples.Select the double number line that correctly labels the number of pounds of apples that are needed to make 1 , 2, and 3 pies.

Hence;

For 1 pie

4 apple pies = 14 pounds of apples

1 apple pie = x pounds

4 apple pies × x pounds = 1 apple pie × 14 pounds of apples

x pounds = 1 apple pie × 14 pounds of apples/4 apple pie

x pounds = 3.5 pounds of apples

For 2 pies

4 apple pies = 14 pounds of apples

2 apple pies = x pounds

4 apple pies × x pounds = 2 apple pies × 14 pounds of apples

x pounds = 2 apple pies × 14 pounds of apples/4 apple pie

x pounds = 7 pounds of apples

For 3 pies

4 apple pies = 14 pounds of apples

3 apple pies = x pounds

4 apple pies × x pounds = 3 apple pies × 14 pounds of apples

x pounds = 3 apple pies × 14 pounds of apples/4 apple pie

x pounds = 10.5 pounds of apples

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3 years ago

4 inches away from a playground the scale of the map is 1 inch represents 5.25 meters how far apart are the actual pond and play

liubo4ka [24]

5.25 times 4 = 21 meters!

If this was the appropriate answer make sure to mark as the brainliest!
-procklown

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3 years ago

Simplify completely quantity 12 x plus 36 over quantity x squared minus 4 x minus 21 and find the restrictions on the variable..

Softa [21]

To simplify the expression stated, it is better to write it in the numerical form. The statement is:

quantity 12 x plus 36 over quantity x squared minus 4 x minus 21

The numerical form is:

12x+36 / (x²-4x-21)

Simplifying,
12x+36 / (x²-4x-21)
12 (x+3) / (x+3)(x-7)

We can cancel the x+3 term, leaving only:
12/(x-7)

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3 years ago

Read 2 more answers

Need help figuring out A=

Bogdan [553]

Better labeling so I can understand.

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3 years ago