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irakobra [83]
3 years ago
8

Laura's science teacher gave each student in her class 25.0 grams of iron pellets for an experiment. Each student was required t

o verify the mass of their pellets by taking four measurements. Which of Laura's measurement was the most precise of the four recorded?
A) 24.99 grams
B) 25.012 grams
C) 25.0122 grams
D) 25.05 grams
Mathematics
2 answers:
sweet [91]3 years ago
8 0
C .25.0122 the more numbers after the decimal place the more precise it is.
Sophie [7]3 years ago
7 0
The answer is c!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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a medium sized apple has 70 calories.this is 10 calories less than 1/4 0f the calories in an old westie chocolate bar. we need t
Alexandra [31]
To find the answer to this question you would just add 10 to 70 and multiply by 4 and your answer would be 320

6 0
3 years ago
The first 5 terms of a sequence are shown below:
nirvana33 [79]

Step-by-step explanation:

To find the formula for the nth term ,

First , find the common difference or common ratio.

Common difference =

T_2-T_1 \\  - 2 - 3 \\  =  - 5

Common ratio =

T_2/T_1 \\  \frac{ - 2}{3}

The common difference applies to the other given numbers for example :

T_3- T_2  =  - 7 - ( - 2) \\  =  - 7 + 2 =  - 5

this proves that it is an arithmetic sequence and the given formula for the nth term of an arithmetic sequence is

T_n =a(n-1)d

Where n = no of terms

a= first term

d= common difference

6 0
3 years ago
Diff Eq dy/dx= (ycos(x))/(1+y^2) initial condition is y(0)=1 work below ...?
Volgvan
Dy/dx = (ycos(x))/(1 + y²)
(1 + y²)/y dy = cos(x) dx
(1/y + y) dy = cos(x) dx
Integrating:
ln(y) + y²/2 = sin(x) + c
ln(1) + 1/2 = sin(0) + c
c = 1/2
Thus,
ln(y) + y²/2 = sin(x) + 1/2
5 0
3 years ago
In january of one winter, 3/10 of a wood pile was used in a wood stove. In February, 2/5 of the wood pile was used. What part of
arsen [322]
2/5 is equivalent to 4/10 so at the end of February 4/10 was used up
And at the end of January, 3/10 was used
so 4/10 + 3/10 = 7/10

At the end of February, 7/10 of the wood was used
6 0
3 years ago
Aidan writes numbers on his ten fingers as 5, 7, 9, 11, 13, 15, 16, 19, 22, 23. What is the probability of picking an even numbe
faltersainse [42]
It would be 2/10, or 1/5, since two out of the 10 numbers are even. 2/10 simplifies to 1/5, since there is 1 for every 5 numbers.

We could turn this into a percentage by dividing 1 by 5, which gives us 0.2. Then we can multiply by 100 to get 20.

So, our probability of choosing an even number is:
2/10
OR
1/5
OR
20%

Hope I could help!
6 0
3 years ago
Read 2 more answers
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