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3 years ago

B)

Mathematics

1 answer:

kherson [118]3 years ago

8 0

Answer:

Her commission for item 1:

5% of 2,000 = 100

Her commission for item 2:

5% of 9,800 = 490

Total commission for each item;

Item 1 : 2,000

Item 2 : 9,800

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What is 950% as a fraction

mrs_skeptik [129]

Answer:

9 1/2

Step-by-step explanation:

$\frac{950}{100}=9\frac{50}{100} = 9 \frac{1}{2}$

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3 years ago

Write 10 5/12 as an equivalent improper fraction.

Lisa [10]

1. (c) 125/12

2. (a) 16

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Roses produced asexually from cuttings are genetically identical to the parent. Roses grown from sexually produced seeds may loo

Ksju [112]

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3 years ago

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A 41 gram sample of a substance that's used to detect explosives has a k-value of 0.1392. Find the substance's half life, in day

-BARSIC- [3]

Answer:

The substance half-life is of 4.98 days.

Step-by-step explanation:

Equation for an amount of a decaying substance:

The equation for the amount of a substance that decay exponentially has the following format:

$A(t) = A(0)e^{-kt}$

In which k is the decay rate, as a decimal.

k-value of 0.1392.

This means that:

$A(t) = A(0)e^{-0.1392t}$

Find the substance's half life, in days.

This is t for which $A(t) = 0.5A(0)$ . So

$A(t) = A(0)e^{-0.1392t}$

$0.5A(0) = A(0)e^{-0.1392t}$

$e^{-0.1392t} = 0.5$

$\ln{e^{-0.1392t}} = \ln{0.5}$

$-0.1392t = \ln{0.5}$

$t = -\frac{\ln{0.5}}{0.1392}$

$t = 4.98$

The substance half-life is of 4.98 days.

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3 years ago

If I put a different sticker on the 30th, 50th, and 60th pages will any of the first 600 pages have all 3 stickers?

icang [17]

Answer:

so the which page that will have the 3 sticker, we must solve the least common multiple of 30, 50, 60. A common multiple is a number that is a multiple of two or more numbers. The common multiples of 3 and 4 are 0, 12, 24, ....

The least common multiple (LCM) of two numbers is the smallest number (not zero) that is a multiple of both.

so the least common multiple of 30, 50 and 60 is 300. so the page that will have 3 stickers is 300th page

Step-by-step explanation:

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3 years ago