3 years ago

Which is one reason why this expression is equal to 0?

Mathematics

2 answers:

Georgia [21]3 years ago

7 0

The Answer is: The sum of any number and its opposite is 0.

Hope this helps! Sorry I'm late. :P

Shtirlitz [24]3 years ago

5 0

If there is no expression, it surely is equal to 0.

You might be interested in

A=1/2f(r+z), solve for r

marin [14]

Answer: $\frac{2A}{f} -2=f$

Step-by-step explanation:

A=1/2(r+2)

2A=f(r+2)

2A/f=r+2

2A/f-2=r

7 0

2 years ago

One third of the candidates for a job were 25 years old or younger. two sevenths of the candidates were at least 50 years old. i

Shalnov [3]

There are three groups of people: 25 years old and younger, between 25 to 50, and 50 years old and older. Their fractions must equal to 1 because these three together form the whole.

1 = 1/3 + 2/7 + x
where x is the fraction for people ages 25 to 50 years old
x = 8/21

So, the actual number of people ages 25 to 50 years old is:

84(8/21) = 32 people

7 0

3 years ago

Luisa had $29.90 in her piggy bank. She made $5.50 a week for 4 weeks by baby-sitting. Write a sequence to show how much money s

Temka [501]

Answer:Week 1: $35.40

Week 2: $40.90

Week 3: $46.40

Week 4: $51.90

Step-by-step explanation:

29.90 + 5.50(x) = y

replace x with 1, 2, 3, or 4 for each week.

4 0