3 years ago

When multiplying a number by 104. how is the decimal point moved?

Mathematics

2 answers:

faltersainse [42]3 years ago

6 0

D. 4 places to the right

Zepler [3.9K]3 years ago

5 0

Answer:

D 4 places to the left

Step-by-step explanation:

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In a fireplace, about 3/4 of an 18 inch log will burn in 1/3 of an hour. How many hours will it take to burn 2 1/2 logs

Karo-lina-s [1.5K]

$\bf \begin{array}{ccll}
\stackrel{burned}{log}&\stackrel{time}{hr}\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
\frac{3}{4}&\frac{1}{3}\\\\
2\frac{1}{2}&h
\end{array}\implies \cfrac{\frac{3}{4}}{2\frac{1}{2}}=\cfrac{\frac{1}{3}}{h}\implies \cfrac{\frac{3}{4}}{\frac{2\cdot 2+1}{2}}=\cfrac{\frac{1}{3}}{\frac{h}{1}}$

$\bf \cfrac{\frac{3}{4}}{\frac{5}{2}}=\cfrac{1}{3}\cdot \cfrac{1}{h}\implies \cfrac{3}{4}\cdot \cfrac{2}{5}=\cfrac{1}{3h}\implies \cfrac{6}{20}=\cfrac{1}{3h}\implies 6\cdot 3h=20\cdot 1
\\\\\\
18h=20\implies h=\cfrac{20}{18}\implies h=\cfrac{10}{9}\implies h=1\frac{1}{9}$

about 1 hour and 6 minutes with 36 seconds.

4 0

3 years ago

If 6 × 6 = 36, what value should be subtracted from 36 to find the product of 5 × 6?

Nataly_w [17]

Answer:

The answer to this question is simply 6.

Step-by-step explanation:

You just need to subtract 6 from 36 to get the product of 5x6 which is 30

3 0

3 years ago

Write an expression that is equivalent to the following x + x + x + - 20

ICE Princess25 [194]

3x-20
Hope this helps

5 0

3 years ago

Read 2 more answers

I need help please?!!!

Illusion [34]

Answer:

True

Step-by-step explanation:

5 0

3 years ago

You are starting a lawn mowing business to earn

Sholpan [36]

Answer:

is the question asking how long would it take to make enough? if so the answer is 37 hours

Step-by-step explanation:

500 - 150 = 350

350 ÷ 9.50

=36.8421052632

(round up)

=37 hours

3 0

3 years ago