3 years ago

Which expression is equivalent to 0.6x?

Mathematics

1 answer:

Vladimir [108]3 years ago

3 0

$2cos(0.5x) sin(0.1x)$

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Which number, when substituted for x, makes the equation 4+8=16 true?

Sliva [168]

Answer:

Step-by-step explanation:

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3 years ago

Suppose a laboratory has a 26-gram sample of polonium-210.The half-life of polonium-210 is about days. a.How many half-lives of

vovangra [49]

Answer:

a) Two half lives, b) $m(276) = 6.526\,g$

Step-by-step explanation:

a) The polonium-210 has a half life of 138.4 days. Therefore, 1.994 half lives have past.

b) Mass decay is described by the following exponential model:

$m(t)=m_{o}\cdot e^{-\frac{t}{\tau} }$

The time constant for the isotope is:

$\tau = \frac{138.4\,days}{\ln 2}$

$\tau = 199.669\,days$

The mass of the isotope after 276 days is:

$m(276) = (26\,g)\cdot e^{-\frac{276\,days}{199.669\,days} }$

$m(276) = 6.526\,g$

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3 years ago

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Write the fraction 375/12,500 as a decimal

Lubov Fominskaja [6]

$\frac{375}{12,500}\\\\divide\ a\ numerator\ and\ a\ denominator\ by\ 125\\\\375:125=3\\\\12,500:125=100\\\\therefore\\\\\frac{375}{12,500}=\frac{3}{100}=0.03$

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3 years ago

I need help with this <br><br> Find the product

algol13

Answer:

-40

Step-by-step explanation:

A negative times a negative is a positive.

A negative times a positive is a negative.

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3 years ago

The points (-1,6) and (1,r) lie on a line with a slope 4. Find the missing coordinator r?

ohaa [14]

Answer:

r=14

Step-by-step explanation:

r-6/1-(-1)=4

r-6=8

Therefore, r=14

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4 years ago

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