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andrew-mc [135]

3 years ago

9

Ling drove at a speed of 45 miles per hour for 225 miles. How many hours did she drive?

2 answers:

vovangra [49]3 years ago

7 0

The is five hours because you divide 225 miles by 45 miles

vladimir2022 [97]3 years ago

4 0

The answer is 5 hours so that person was correct

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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: $\displaystyle x > 6$

8 0

3 years ago

Read 2 more answers

Hello Can Someone help Im Stuck Please

Scrat [10]

375mg

I don’t know for certain, but you can try it, I guess.

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3 years ago

HELP PLEASE ANYONE OR SOMEONE HELP. It’s due in 10 minutes.

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Sin V = opp/hyp
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3 years ago

Helen has 21 marbles. 2/7 of them are blue,1/3 are red and the rest are green. how many green marbles does Helen have?

andreyandreev [35.5K]

Answer:

8

Step-by-step explanation:

2/7 of 21 is 6 1/3 of 21 is 7. 6+7 is 13. 21-13 = 8

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3 years ago

1.<br> If A=2, B=3, then what does (A) + (B)=

yarga [219]

(A)+(B)=(2)+(3)=5

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3 years ago