3 years ago

Describe a real-life multiplication situation for which an estimate makes sense

Mathematics

1 answer:

Darya [45]3 years ago

5 0

Hfhfhffhhdydtyeyhdurufyyfhgyfhhfgueyhftfh

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Inessa05 [86]

Answer:

X=4 Y= -5

Step-by-step explanation:

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3 years ago

What multiplies to -15 and adds to -3

bagirrra123 [75]

That’s not possible but it added to -2 it would be possible

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3 years ago

Find m<1 and m<2. Justify your answer.

Natalija [7]

Answer:

M<1 80 by the corresponding angles postulate

Step-by-step explanation:

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4 years ago

What is polynomials?

valina [46]

Polynomials are set of expressions with variables that are usually used in operations.
*2x^2 +3x-2
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4 years ago

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.

3 0

3 years ago