3 years ago

Divide. Simplify your answer. 20m2/10k2m ÷4k2m2

Mathematics

1 answer:

mariarad [96]3 years ago

5 0

Answer:

$\frac{1}{2kx^{4}m }$

Step-by-step explanation:

Please mark brainliest

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One is 2,000 less than 6,000,000

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4 years ago

Please I need help with this

Bad White [126]

Step-by-step explanation:

The two triangles are similar so

BC=BC

AB=AB

AC=AC

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z=4

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8-2=2x

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3 years ago

2. Find x.<br> 24x - 19<br> 16x + 13<br><br> Please help me with this

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3 years ago

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stiks02 [169]

Answer:

80 ft

Step-by-step explanation:

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3 years ago

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If caffeine reduces by about 10% per hour, how many hours h does it take for the amount of caffeine in a body to

Mila [183]

Answer:

7 hours

Step-by-step explanation:

Since, the final amount of caffeine formula would be,

$A=P(1-r)^t$

Where,

P = Initial value,

r = rate per period,

t = number of periods,

Here, r = 10% = 0.10, t = h, A = $\frac{P}{2}$

$\frac{P}{2}=P(1-0.10)^h$

$\frac{1}{2}=(0.90)^h$

Taking log both sides,

$log 0.5 = log 0.90^h$

$log 0.5 = h log 0.90$

$\implies h = \frac{log 0.5}{log 0.9}=6.57881347896\approx 7$

Hence, after 7 hours the amount of caffeine in a body to reduce by half.

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3 years ago