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2 years ago

Simplify 3 + [5n - (2-n)]

Mathematics

1 answer:

melisa1 [442]2 years ago

3 0

Answer:

6n+1

Step-by-step explanation:

Eliminate the parenthesis by changing the symbol of each term inside

3+[5n-2+n]

Eliminate the bracket and group similar terms

5n+n+3-2

Simplify terms

6n+1

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Plz help!!!!!!!!!!!!!

vaieri [72.5K]

Answer: The correct answer is -2,5/2 which is the last answer.

Step-by-step explanation:

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3 years ago

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roger has a nail that is 12 centimeters long. he measures and records the length of the nail as 15 centimeters. what is the % er

Marianna [84]

15-12=3. 3/12=1/4=25% error

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3 years ago

How do I solve this question?

Sati [7]

Answer:

m=2 and n=3

Step-by-step explanation:

<u>Step</u> :-

Given $[ 2 x^{n}y^{2} ]^m = 4 x^6 y^4$

using algebraic formula $(a^m)^n= a^{mn}$

now

$2^{m} x^{mn} y^{2m} = 4x^{6} y^{4}$

now equating 'x' powers, we get

$x^{mn} = x^{6}$

$mn=6$ ....(1)

now

$y^{2m} = y^{4}$

Equating 'y' powers ,we get

2 m=4

m=2

substitute m= 2 in equation (1)

we get

2 n=6

n=3

verification:-

substitute m=2 and n=3 , we get

$[ 2 x^{n}y^{2} ]^m = 4 x^6 y^4$

$(2 x^{3} y^2)^2 = 4 x^6 y ^4\\$

$4 x^6 y^4 = 4 x^6 y^4$

both are equating so m= 2 and n=3

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3 years ago

Antwon makes hot chocolate by mixing 2 cups of milk with 5 tablespoons of cocoa.

Yuki888 [10]

Answer:

2.5 tablespoons of cocoa

Step-by-step explanation:

if 2 cups of milk is originally used then you use 1 well 2 divided by 2 equals 1 and 5 divided by 2 equals 2.5 so you would use 2.5 tablespoons of cocoa

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Step-by-step explanation:

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3 years ago