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Marysya12 [62]
3 years ago
13

A restraurant owner estimates that his restaurant will sever 430 customers the first week it is open the actual number of custom

ers the first week is 400 find the percent error
Mathematics
1 answer:
AlexFokin [52]3 years ago
5 0

Answer:

7.5% error

Step-by-step explanation:

Percent Error = ( | measured - real | / real ) x 100%

|430 - 400| / 400 = |-30| / 400

( 30 / 400 ) x 100%

= 7.5%

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If a = 2 + i, and b = 3 – 2i, what is a/b?
AveGali [126]

Answer:

it's \\\frac{4}{13} +\frac{7}{13}i

Step-by-step explanation:

3 0
3 years ago
Twin brothers,billy and Bobby, can mow their grandparents lawn together in 72 minutes. Billy could mow the lawn by himself in 15
Alla [95]

Answer:

Billy used 28 mins 30 sec to mow the lawn and Bobby used 43 mins 30 sec to now the lawn both within 72 mins

Step-by-step explanation:

let x represent Billy

let x+15 represent Bobby

x + x + 15 = 72

2x = 72 - 15

2x = 57

2x/2 = 57/2

x = 28.5 minutes = 28 minutes 30 seconds

Bobby = x + 15

= 28.5 + 15

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3 years ago
Can you please Help!!!! 20 points!!!!!!
Mademuasel [1]

Answer:

I'm doing the same thing and, I don't understand it either.

Step-by-step explanation:

5 0
3 years ago
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A line is written in standard form Ax + By = 0, where A and B are not
cricket20 [7]

Answer:

A point that must lie on this line is the origin (0,0)

Step-by-step explanation:

we know that

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therefore

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5 0
3 years ago
Sovle: 10 -2x = -30 <br> Please use subsitution <br> Show your steps to solve the equation
Margaret [11]
10 - 2x = -30
-2x = -40
2x = 40
x = 20
7 0
3 years ago
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