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3 years ago

Write 39% as a decimal

Mathematics

2 answers:

Lelu [443]3 years ago

5 0

Answer:0.39

Step-by-step explanation:

r-ruslan [8.4K]3 years ago

5 0

Answer:

0.39

Step-by-step explanation:

To convert a percentage to a decimal, we can do it one of two ways:

The first is to divide the number by 100. So in this case it would be 39 divided by 100 = 0.39

Or we could simply add a decimal like this:

Take off the percentage sign and add a decimal instead 39% -> 39.

Then move this decimal two places to the left 39. -> 0.39

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An initial population if 1000 starfish double each year for 4 years. What is the population after 4 years?

Zolol [24]

Answer:

16,000 starfish

Step-by-step explanation:

year 0: 1000

year 1: 2000

year 2: 4000

year 3: 8000

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3 years ago

nya wants to buy a sweater that had an original price of 55. the sweater is now discounted 20% and the sales tax rate is 5.5%. h

kondaur [170]

Answer:

Step-by-step explanation:

55 - 20% = 44

5.5% of 44 = 2.42

2.42 + 44 = 46.42

hope this helps. :]

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3 years ago

Who can help me ! .... thanks

Tasya [4]

Given that there is no any option to choose I am going to help you according to the concepts of Congruent Triangles. Two triangles are congruent if and only if:

1. They have:exactly the same three sides
2. exactly the same three angles.

There are five ways to find if two triangles are congruent but in this problem we will use only two.

First Answer:

ASA criterion: Angle, side, angle. This means that we have two triangles where we know two angles and the included side are equal.

So:

If ∠BAC = ∠DEF and $\overline{AC}=\overline{DE}$

Then ΔABC and ΔEFD are congruent by ASA criterion.

Second answer:

SAS criterion: Side, angle, side. This means that we have two triangles where we know two sides and the included angle are equal.

$If \ \overline{AC}=\overline{DE} \ and \ \overline{BC}=\overline{DF}$

Then ΔABC and ΔEFD are congruent by SAS criterion.

4 0

4 years ago

What is the completely simplified equivalent of 2/(5+i)?

Bezzdna [24]

namely, let's rationalize the denominator in the fraction, for which case we'll be using the conjugate of that denominator, so we'll multiply top and bottom by its conjugate.

so the denominator is 5 + i, simply enough, its conjugate is just 5 - i, recall that same/same = 1, thus (5-i)/(5-i) = 1, and any expression multiplied by 1 is just itself, so we're not really changing the fraction per se.

$\bf \cfrac{2}{5+i}\cdot \cfrac{5-i}{5-i}\implies \cfrac{2(5-i)}{\stackrel{\textit{difference of squares}}{(5+i)(5-i)}}\implies \cfrac{2(5-i)}{\stackrel{\textit{recall }i^2=-1}{5^2-i^2}}\implies \cfrac{2(5-i)}{25-(-1)} \\\\\\ \cfrac{2(5-i)}{25+1}\implies \cfrac{2(5-i)}{26}\implies \cfrac{5-i}{13}$

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3 years ago

What is the LCM of 30 and 45? a0

Alik [6]

90 is the LCM of 30 and 45

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3 years ago

Read 2 more answers