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3 years ago

Investigating the Definition of Absolute Value

1 answer:

4 0

It's how far a number is from 0.
( ex.) 6 is 6 away from 0 but so is -6; so the absolute value of 6 is 6 and the absolute value of -6 is 6. the symbol "|" is placed on either side to mean absolute value.

(ex.2) |-6| = 6. -|-6|= -6. |6|=6. and -|6|= -6.
if the negative sign is outside of the symbol then the number will always be negative but if there is no negative sign outside of the symbol it will always be positive, even if it looks lile this. |-6| it would still be positive.

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The number of students who chose lunch was 5 more than the number of students who chose breakfast. Write a system of linear equa

Papessa [141]

Answer:

The system of linear equations are $y=5+x$ and $x+y=25$

Step-by-step explanation:

Given : The number of students who chose lunch was 5 more than the number of students who chose breakfast. Let x represent the number of students who chose breakfast and y represent the number of students who chose lunch.

(50 students picked, 25 picked dinner the rest picked lunch and breakfast)

To find : Write a system of linear equations that represents the numbers of students who chose breakfast and lunch ?

Solution :

The number of students who chose breakfast be 'x'

The number of students who chose lunch be 'y'.

The number of students who chose lunch was 5 more than the number of students who chose breakfast.

i.e. $y=5+x$

Now, Total student were 50 and 25 picked dinner the rest picked lunch and breakfast i.e. 25.

So, $x+y=25$

Therefore, the system of linear equations are $y=5+x$ and $x+y=25$

4 0

3 years ago

A tool that regulary sells for $18.50 is on for 20 % off what is the sale price?

denis23 [38]

So
20% of 18.50 = ____ 

to get this you multiply 
20% is .20 in decimal form 

18.50 x .20 = $3.70 

so 20% is $3.70, which means the discount is $3.70 

so then you subtract $3.70 from the original price of 18.50 and you get 

$14.80 which is your answer (:

3 0

3 years ago

Read 2 more answers

If radius of circle is 7cm. find its diameter with formula.

Margarita [4]

The answer would be 14 cm.

The formula to find diameter is d=2r
D= diameter
R= radius
The 2 is there because you have half of the diameter so just times by 2 to get the diameter.

4 0

3 years ago

Read 2 more answers

15 billion in numerals?

Leokris [45]

A billion has 9 zeros. So
15,000,000,000
:)

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3 years ago

Read 2 more answers

if a person weighs 150 lb. bicycles at 10 mph for 1 minute and loses 8.1 calories, how many calories would they lose in 1 hour?

Nookie1986 [14]

Answer:

the answer will be 486 calories

Step-by-step explanation:

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7 0

3 years ago