3 years ago

What property does (3 + 19) – 12 = 3 + ( 19 – 12) represent?

Mathematics

1 answer:

denpristay [2]3 years ago

6 0

Answer:

associative property

Step-by-step explanation:

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3/x+1 -1/2 = 1/3x+3 please help solve

mash [69]

$\frac{3}{x+1}^{(6}-\frac{1}{2}^{(3x+3}=\frac{1}{3x+3}^{(2} \\\\ 18-3x-3=2 \\\\ -3x+15=2\\\\ -3x=2-15 \\\\-3x=-13 \\\\ \boxed{x=\frac{13}{3}}$

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3 years ago

a) How many significant figures are in the numbers 99 and 100? (b) If the uncertainty in each number is 1, what is the percent u

levacccp [35]

Answer:

2, 3

1.01, 1

Percentage uncertainty

Step-by-step explanation:

a) The significant figures in the number 99 is 2

The significant figures in the number 100 is 3

b) Uncertainty in each of the numbers for both the numbers is 1

Percentage uncertainty

$\text{Percentage uncertainty}=\frac{\text{Uncertainty}}{Value}\times 100 \\\Rightarrow \text{Percentage uncertainty}=\frac{1}{99}\times 100=1.01$

Percentage uncertainty = 1.01

100

$\text{Percentage uncertainty}=\frac{\text{Uncertainty}}{Value}\times 100 \\\Rightarrow \text{Percentage uncertainty}=\frac{1}{100}\times 100=1$

Percentage uncertainty = 1

c) Percentage uncertainty is a better way to express the numbers as the significant figures do not show the actual value of the numbers.

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3 years ago

In the equation Y+8=2 what does y=?

Jet001 [13]

Y = -6 hope this helps

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3 years ago

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luda_lava [24]

Answer:

C. 75

Step-by-step explanation:

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3 years ago

I need help with the problem

Kobotan [32]

There are 99 miles left. 43(7)=301. 400-301=99.

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