Explain what the variable represent in an addition or subtraction expression.

Answers

Answer 1

Answer: A variable is just a letter that represents a number. It doesn't really matter what letter it is (unless the directions say so). Well its sort of hard to explain but I hoped this helped you out a bit. ^^''

Answer 2

Answer:

The variables represented in an addition or subtraction equation expression is the letter associated with a number, it acts as a place holder for that unknown value that is multiplyed by the coefficient or number infront of the letter.

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Which is smaller, half of 36 or one seventh of 42

30 girls and boys have planned for a picnic. there is a ratio of 3 girls to 7 boys how many boys are there?

Answers

To solve the given problem We can consider, 30% are girls of 30 people 70% are boys in 30 people In order to get the number, we just multiply the total number of people with the percentage of the designated target populace.
1.    30 x 0.3 = 9 girls
2.    30 x 0.7 = 21 boys
3.    21 boys + 9 girls = 30 people

Hence, there are 21 boys.

Whatsapp is 500% in a fraction in the simplest form

Answers

500%=0.5 which is equal to 1/2 so the answer is 1/2

Actually the actually 500% as a fraction is 5/1 which equals 5.

Write a decimal in tenths that is less than 2.42 but greater then 2.0

Answers

Answer:

Here's a few....choose whatever one you want. :)

2.1

2.2

2.3

2.4

I hope this helps!

-Mikayla

Evaluate the following exponential expressions. A. -4²

B. (-2)³

C. (-2)⁴

D. 1000⁰

E. 566¹

Answers

A.
$-4^2 = (-1)(4)^2 = (-1)(16) = \boxed{-16}$

B.
$(-2)^3 = -2 * -2 * -2 = 4 * -2 = \boxed{-8}$

C.
$(-2)^4 = (-2)^3 * -2 = -8 * -2 = \boxed{16}$

D.
$1000^0 = \boxed{1}$

E.
$566^1 = \boxed{566}$

-4² : given
= - (4 * 4) = -16 : expand and calculate

(-2)³ : given
= (-2)*(-2)*(-2) = -8 : expand and calculate

1000⁰ : given
= 1000⁰ = 1 : definition: any nonzero number to the power zero gives 1

566¹ : given
= 566¹ = 566

(-2)⁴ : given
= (-2)³ × -2 = -8 × -2 = 16

Hope I helped! :)

A new gold phone has different prices for different types....$1,544
$1,242
$2,285
$1,116
$1,899
$1,649
$1,423 and $1,242 -again.....what is the range of the prices shown above?

Answers

So,

The range will simply be the absolute value of the difference between the highest and lowest price.

The highest price is $2285.

The lowest price is $1116.

The absolute value of the difference between these two prices is:

|2285 - 1116| = 1169

The range of the prices for the gold phone is $1169.

A movie theater sells small and large boxes of popcorn.• A small box of popcorn costs $1.50.
• A large box of popcorn costs $4.00.
• A total of 25 boxes of popcorn were sold totaling $75.00.
How many large boxes of popcorn were sold?
A 6
B. 10
C.
12
D.
15

Answers

The answer would be ten

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