3 years ago

Who Discovered Mathematics

Mathematics

1 answer:

algol133 years ago

8 0

Not funny ^ :|... The answer would be the Gupta Empire..

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What common denominator can be used to write the left side as one rational expression?

iris [78.8K]

Answer:

10(10+x)

Step-by-step explanation:

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4 years ago

Maya and three friends have three quarters and one nickel to spend

sukhopar [10]

20 cents

4 people are sharing the money: Maya + 3

3(0.25) + 0.5 = 0.80

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4 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

Write the pair of fractions as a pair of fractions with a common denominator 1/4 and 5/12

zavuch27 [327]

See picture for answer.

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4 years ago

Florence wants to spend no more than $3 on onions. Will she be able to

crimeas [40]

Yes she will have enough because 1.25 + 1.25 is 2.50

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3 years ago