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3 years ago

Convert 45 mg to kg. Help?

Mathematics

1 answer:

stich3 [128]3 years ago

3 0

There are 1000 mg to 1 g, and 1000 g to 1 kg.

So there are 1,000,000 mg to 1 kg, which makes

45 mg = (45 mg) * (1/1,000,000 kg/mg) = 0.000045 kg

(Basically, you move the decimal point to the left 6 times.)

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Triangle JKL is dilated from the origin at a scale factor of 10 to create triangle J′K′L′.Select the option that completes the s

Aneli [31]

Given: Triangle JKL is dilated from the origin at a scale factor of 10 to create triangle J′K′L′.

Required: Correct option that complete the statement.

Explanation:

Now, triangle is dilated from the origin at a scale factor of 10.

So, the sides will become larger, but angles will remain the same.

Hence, the triangles will be similar as sides will be in proption (SSS rule).

So, The triangles are similar because their corresponding sides are proptional and their corresponding angles are congurent.

Final Answer: Second group is correct answer.

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1 year ago

639.497 rounded to the nearest tenth

Sphinxa [80]

It is 639.5. this is how you round numbers to the nearest tenth:

if the digit in the hundredths place is 5 or more you round up one, if it is lower than 5 it stays the same, pay no attention to the thousandths place....ex--> 0.497
the 4 is the tenths place
th 9 is the hundredths place
the 7 is the thousandths place......since 9 is 5 or more you round the 4 up one number, so the 4 would be a 5. pay no attention to the 7. lets do another

0.426
the 4 stays as a 4 because 2 is a lower number than 5.

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3 years ago

The half-life of Radium-226 is 1590 years. If a sample contains 500 mg, how many mg will remain after 2000 years? Preview mg Giv

d1i1m1o1n [39]

Answer:

$a_{n}$ =209.09 mg

Step-by-step explanation:

given: material= radium

half life= 1590 years

initial mass $a_{0}$ =500mg

we know that to calculate the amount left we use

$a_{n}$ = $a_{0}$ $\left ( 0.5\right )^{n}$

$n=\frac{2000}{1590} = 1.2578$

therefore

$a_{n}$ = $500\times0.5^{1.2578}$

$a_{n}$ =209.09058407921 mg

$a_{n}$ =209.09 mg amount left after 2000 years

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4 years ago

The amount of fuel in a tractor's fuel tank is changing according to the equation y=−3x+40 , where x = time in hours and y = amo

Alenkasestr [34]

Answer:

The rate of change is "-3". Which means the rate at which the tractor uses fuel.

Step-by-step explanation:

The equation describes a line and any line follows the equation:

y = m*x + c

Where "m" is the rate of change and "c" is the shift on the line. Comparing the equation for the fuel and the equation from the line, the rate of change must be "-3". The rate of change in this context describes the speed at which the tractor uses fuel, at a rate of 3 gallons per hour.

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3 years ago

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Three friends, Jose, Michael, and Andrea, play a game in which each decides to be either a liar or a truth teller. A liar must a

Rina8888 [55]

This question is based on logic.

As given, there are three friends, Jose, Michael, and Andrea. They are playing a game where each decides to be either a liar or a truth teller. A liar must always lie and a truth teller must always tell the truth.

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Andrea said, " If one of us is a liar, then we are all liars." This makes Andrea a liar as Michael's statement already proved that he is the truth teller.

Hence, Michael is a truth teller and Jose ans Andrea are liars.

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3 years ago