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3 years ago

15

What is the probability that a state will get hit by a major tornando at least once in the next 10 years if the probability of g

etting hit in one year is 1/10?

1 answer:

Vinil7 [7]3 years ago

8 0

i guess you could say they are independent, so probability of no tornadoes in any one years is

<span>9/10</span> so no tornadoes 10 years in a row is <span>(<span>9/10</span><span>)^10</span></span> so "at least one" in ten years is <span>1−(<span>9/10</span><span>)^10</span></span> that might work better

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Do a + a + a + a and 4a a have the same value for any value of ? Explain how you know.

katrin2010 [14]

Yes

Because:

a + a + a + a = 4a

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3 years ago

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** 30 POINTS ** <br><br> Anyone got an idea for 7 and 8?

Harrizon [31]

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3 years ago

Solve the inequality for x<br> 3^(6x+18)<27^(3x)

Lera25 [3.4K]

Answer:

$\displaystyle x > 6$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

<u>Algebra I</u>

Terms/Coefficients
Factoring

<u>Algebra II</u>

Exponential Rule [Powering]: $\displaystyle (b^m)^n = b^{m \cdot n}$
Solving exponential equations

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

<em /> $\displaystyle 3^{6x + 18} < 27^{3x}$ <em />

<em />

<u>Step 2: Solve for </u><em><u>x</u></em>

Rewrite: $\displaystyle 3^{6x + 18} < 3^{3(3x)}$
Set: $\displaystyle 6x + 18 < 3(3x)$
Factor: $\displaystyle 3(2x + 6) < 3(3x)$
[Division Property of Equality] Divide 3 on both sides: $\displaystyle 2x + 6 < 3x$
[Subtraction Property of Equality] Subtract 3x on both sides: $\displaystyle -x + 6 < 0$
[Subtraction Property of Equality] Subtract 6 on both sides: $\displaystyle -x < -6$
[Division Property of Equality] Divide -1 on both sides: $\displaystyle x > 6$

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3 years ago

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Helppppp! please show your work!

Shtirlitz [24]

Answer:

90 - 37 will give a solid 53

Step-by-step explanation:

the two sums of A to C to C to B so 22.9(C, B) and 14.1 (A, C)

and know that this angle is 90 degrees, my guess would be to subtract the to given numbers with degrees to earn the sum so 22.9 + 14.1 equals 37

now we add angle degrees and sum and subtract one another,

90 - 37

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3 years ago

At Cass High School, 2/3 of the students play a sport. Of the students who play a sport, 2/5 play football. What fraction of the

Westkost [7]

Answer:

4/15

Step-by-step explanation:

2/3 play sports

2/5 play football

Of the 2/3 that play sports, 2/5 of them play football

2/3(2/5) = 4/15

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3 years ago