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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

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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Given,

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2 years ago

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3 years ago

Given the value of the hypotenuse c for a 30°-60°-90° triangle, write the

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Answer:

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2 years ago

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Leviafan [203]

Answer:

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Step-by-step explanation:

we know that

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$sin^{2}(\alpha)+cos^{2}(\alpha)=1$

step 1

Find cos(X)

we have

$sin(x)=\frac{1}{2}$

we know that

$sin^{2}(x)+cos^{2}(x)=1$

substitute

$(\frac{1}{2})^{2}+cos^{2}(x)=1$

$cos^{2}(x)=1-\frac{1}{4}$

$cos^{2}(x)=\frac{3}{4}$

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substitute

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step 4

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substitute

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step 5

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substitute

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3 years ago