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3 years ago

313.92 ÷ 6.4 + 200.4 What is the value of the expression?

Mathematics

1 answer:

slava [35]3 years ago

5 0

Answer:249.45

Step-by-step explanation: First take 313.92 divided by 6.4 and then add 200.4 which is when you get your final answer of 249.45

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How do you know whether two quantities x and y are proportional?

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I'm pretty sure it is (a)

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3 years ago

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Find the quotient of 4.13 x 10^-8 and 0.04 x 10^5

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3 years ago

Simplify

OlgaM077 [116]

Answer:

see below

Step-by-step explanation:

$\frac{x-1}{x^2-3x+2}+ \frac{x-2}{x^2-5x+6} +\frac{x-5}{x^2-8x+15}$

we need to simplify that

$x^2-3x+2=(x-1)(x-2)\\\\x^2-5x+6=(x-2)(x-3)\\\\x^2-8x+15=(x-3)(x-5)$

so we can continue

$\frac{x-1}{(x-1)(x-2)}=\frac{1}{x-2}\\\\\frac{x-2}{(x-2)(x-3)} =\frac{1}{x-3}\\\\\frac{x-5}{(x-3)(x-5)} =\frac{1}{x-3}$

and we can put all together

$\frac{1}{x-2}+ \frac{1}{x-3}+ \frac{1}{x-3}\\\\\frac{1}{x-2} +\frac{2}{x-3}\\\\\frac{x-3}{(x-3)(x-2)}+ \frac{2(x-2)}{(x-2)(x-3)} \\\\\frac{x-3+2x-4}{(x-3)(x-2)}\\\\\frac{3x-7}{x^2-5x+6}$

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3 years ago

Some one help me before I fail this class.

hichkok12 [17]

35 because you can not multiply both numbers by the same number to get a smaller Greatest common multiple

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2 years ago

Starting time 6:57 pm elapsed time 47 minutes please tell me how to show my work now please I do t have time

Sergeu [11.5K]

Answer:

7:44

Step-by-step explanation:

6:57 + 3 = 7:00

47 - 3 = 44 minutes left

7:00 + 44 minutes = 7:44

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2 years ago