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Makovka662 [10]
3 years ago
15

There are 25 elements found in living things. How many of these elements are found in some organisms but not all?

Mathematics
1 answer:
wolverine [178]3 years ago
8 0
What are the answer choices
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Of 50 students surveyed, 19 said they had soda for breakfast. write a portion in fraction, decimal, percent
Naya [18.7K]
Answers:
___________________________
In fraction:  \frac{19}{50} .
___________________________
In decimal:  0.38  .
_________________
In percent:  38 %  .
_________________
Explanation:
_________________
19/50 = (19*2)/(50*2) = 38/100 .

38/100 = 38 ÷ 100 = 0.38  .

38/100 = 38 % .
___________________________
7 0
3 years ago
3.
Vitek1552 [10]
To solve this we are going to use the future value of annuity due formula: FV=(1+ \frac{r}{n} )*P[ \frac{(1+ \frac{r}{n})^{kt}-1 }{ \frac{r}{n} } ]
where
FV is the future value
P is the periodic deposit 
r is the interest rate in decimal form 
n is the number of times the interest is compounded per year
k is the number of deposits per year

We know for our problem that P=420 and t=15. To convert the interest rate to decimal form, we are going to divide the rate by 100%: r= \frac{10}{100} =0.1. Since Ruben makes the deposits every 6 months, k=2. The interest is compounded semiannually, so 2 times per year; therefore, k=2.
Lets replace the values in our formula:

FV=(1+ \frac{r}{n} )*P[ \frac{(1+ \frac{r}{n})^{kt}-1 }{ \frac{r}{n} } ]
FV=(1+ \frac{0.1}{2} )*420[ \frac{(1+ \frac{0.1}{2})^{(2)(15)}-1 }{ \frac{01}{2} } ]
FV=29299.53

We can conclude that the correct answer is <span>$29,299.53</span>
8 0
3 years ago
Why is scientific notation used?
scoray [572]
The answer is the last one; to express very large or small numbers.
We use it so we can show big or very small numbers in an easier way.
6 0
3 years ago
Read 2 more answers
Noah fills a soap dispenser from a big bottle that contains 2 1/3 liters of liquid soap. That amount of soap will fill 3 1/2 dis
kakasveta [241]

Answer:

1 1/2

Step-by-step explanation:

3 1/2 / 2 1/3

6 0
2 years ago
The lumberyard where you work sold a customer two boards . They measure 10 1/4 feet and 8 2/4 feet what is the total of the two
Lelechka [254]
If you add the two numbers, 10 +8 is 18.  The fractional parts are 1/4 and 2/4 which equals 3/4.  So the total length is 18 and 3/4 feet.
7 0
3 years ago
Read 2 more answers
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