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3 years ago

Find the value of the expression. 21 - -6

Mathematics

1 answer:

Licemer1 [7]3 years ago

3 0

Answer:

Step-by-step explanation:

Subtracting a negative is like adding

21 - -6

21 +6

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You roll a fair six sided die the die shows an odd number or number greater than four

tiny-mole [99]

Answer:

P (odd number or number greater than 4) = 4/6 = 2/3

Step-by-step explanation:

The solution set { 1,2,3,4,5,6}

Odd numbers are 1,3,5

Numbers greater than 4 are 5,6

Notice that 5 is repeated. We can only count it once

There are 4 answers that meet the criteria (since we can only count 5 once)

P (odd number or number greater than 4) = 4/6 = 2/3

3 0

3 years ago

I need help to solve this

Svetach [21]

Sorry, don't even think i've learned this yet, maybe look up a video from khan academy?

5 0

3 years ago

20. (01.03 MC) What is the simplified expression ? (1 point)

ahrayia [7]

Answer:

$\displaystyle 3^2$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Exponential Rule [Multiplying]: $\displaystyle b^m \cdot b^n = b^{m + n}$
Exponential Rule [Dividing]: $\displaystyle \frac{b^m}{b^n} = b^{m - n}$

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{3^3 \cdot 3^3}{3^4}$

Step 2: Simplify

[ER] Multiply: $\displaystyle \frac{3^{3+3}}{3^4}$
Add Exponents: $\displaystyle \frac{3^6}{3^4}$
[ER] Divide: $\displaystyle 3^{6 - 4}$
Subtract Exponents: $\displaystyle 3^2$

4 0

3 years ago

Oil is leaking from a broken pipeline into a lake. In the first 10 minutes, 400 gallons of oil have leaked, covering 8000 square

serg [7]

Answer:

800 square feet per minute

Step-by-step explanation:

7 0

3 years ago

The population of a city has increased by 34% since it was last measured. If the current population is 46,900 , what was the pre

KonstantinChe [14]

The current population is equal to 134% compared to the previous population. So form a proportion 134/100=46900/x. Which equals to 35000

8 0

4 years ago

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