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Kobotan [32]
3 years ago
8

All of the following are equivalent except 7x2, 4x+3x, (4+3)x, 7x

Mathematics
2 answers:
Virty [35]3 years ago
5 0

Answer:

7x^2 (the first choice)

Step-by-step explanation:

7x^2

4x+3x = 7x

(4+3)x = 7x

7x

All are 7x except for the first one which is 7x^2

Sophie [7]3 years ago
4 0

Answer:

7x^2 (the first choice)

Step-by-step explanation:

7x^2

4x+3x = 7x

(4+3)x = 7x

7x

All are 7x except for the first one which is 7x^24

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The only variable that cannot be held constant is F, but we can hold the mass constant and vary the acceleration OR we can hold the acceleration constant and vary the mass.  Either one would work, but the easiest would be to vary the mass and hold the acceleration constant since we are all pulled by the same action gravity


6 0
3 years ago
Will give brainliest
Galina-37 [17]

The percentage of the radioactive isotope left is 25.0000%.

<h3>What is the half life?</h3>

The half life of a radioactive isotope is the time that will elapse before only half of the number of original isotopes will remain.

Now;

We are told that;

Half life (t1/2) = 55 days

Time taken (t) =  115 days

Ratio of isotope remaining = N/No

Thus;

N/No = (1/2)^t/t1/2

N/No = (1/2)^115/55

N/No = (1/2)^2

N/No =1/4

Hence, the percentage = 1/4 * 100/1 = 25.0000%

Learn more about half life of an isotope:brainly.com/question/16387602

#SPJ1

7 0
2 years ago
Which of these is an exponential parent function?
attashe74 [19]
The exponential parent function is D
3 0
3 years ago
HELP PLEASE
Ksju [112]
((800+100+400+35)÷3,250)×100
=41%
3 0
3 years ago
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a clothing store is having a sale of 30% off all dresses what is the discount on new price of the dress originally cost $90​
Paul [167]

Answer:

$63

Step-by-step explanation:

30% of 90 is 27

90-27=63

8 0
3 years ago
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