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olasank [31]
3 years ago
13

What is the value of n in the equation 2n+19=21​

Mathematics
2 answers:
dimaraw [331]3 years ago
8 0

Step-by-step explanation:

2n + 19 = 21

2n = 21 - 19

2n = 2

n = 2 \div 2

Therefore, N = 1

hope it helps don't forget to like and mark me down

LUCKY_DIMON [66]3 years ago
7 0

Answer:

n=1

Step-by-step explanation:

to solve this you put 19 on the opposite side and subtract 19 fron 21 because subtraction is the opposite of addition and then you get 2 and then divide 2 by 2 to get 1 so n=1. Yo can check it by doing 2*1=2 then 2+19 =21 so it is the correct answer.

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Write the formula to find the profit %, if selling price and cost price both are given.
jolli1 [7]

Answer:

profit \: percent =  \frac{sp - cp}{cp}  \times 100 \: percent

where,

SP=Selling price

CP=Cost price

<h3>For example:</h3>

Given,

Selling price(SP)= 1000

Cost price(CP)=800

Now,

profit \: percent =  \frac{sp - cp}{cp}  \times 100 \: percent \\  =  \frac{1000 - 800}{800}  \times 100 \\  =  \frac{200}{800}  \times 100 \\  = 25 \: percent

Hope this helps...

Good luck on your assignment..

5 0
3 years ago
1/2 of 4/5 as a fraction<br><br>​
omeli [17]

Answer:

4/10 is the answer

6 0
2 years ago
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Ket [755]
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4 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
kiruha [24]

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6 0
3 years ago
I need 85 and 86 pleas because I am not in algebra so solve now please
jasenka [17]

85) I gonna do substitution to solve them.

First lets find number of boys.

boys = x

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There are 16 boys.

Now do the opposite with girls.

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girls = x

27 = x + x + 5 --) 27 = 2x + 5 --) 22 = 2x --) 11 = x

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86) I gonna do subsitution to solve this problem too.

x + y = 82

6x + 2y = 284

First find # of car magnets

y = -x + 82

6x + 2( -x + 82 ) = 284 --) 6x - 2x + 164 = 284 --) 4x + 164 = 284 --) 4x = 120 --)

x = 30

There are 30 car magnets.

x = -y + 82

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There are 52 bumper stickers

4 0
3 years ago
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