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Studentka2010 [4]
3 years ago
14

14.2= -6.8+4.2d (solve)

Mathematics
1 answer:
Vilka [71]3 years ago
3 0
<span>14.2= -6.8+4.2d
4.2d = 14.2 + 6.8
4.2d = 21
     d = 21 / 4.2
     d = 5</span>
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Explain how negative powers of 10 can be helpful when writing and comparing small numbers
Luba_88 [7]

Answer:

See explanation

Step-by-step explanation:

Powers of 10 is a very useful way of writing down large or small numbers.

Instead of having lots of zeros, you show how many powers of 10 will make that many zeros.

When you work with small numbers, you should use the negative powers of 10. Just remember for negative powers of 10, move the decimal point to the left. For example,

0.36=3.6\cdot 10^{-1}\ [\text{Move the decimal point one place to the left}]\\ \\0.036=3.6\times 10^{-2}\ [\text{Move the decimal point two places to the left}]\\ \\0.0036=3.6\times 10^{-3}\ [\text{Move the decimal point three places to the left}]\\ \\...

When comparing small numbers, write these numbers in scientific notation (only one non-xero digit must be before point) and then

  • if the powers of 10 are the same in compared numbers are the same, just compare the numbers which are multiplied by these powers of 10. For example, 3.6\times 10^{-6}>2.6\times 10{-6}, because powers are the same (-6) and 3.6>2.6
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8 0
3 years ago
You are making snap bags, you want each bag to have the same combination you have 75 carrots and 40 celery sticks and you want t
makkiz [27]

Answer:

5 Bags

Step-by-step explanation:

There are 75 carrots and 40 celery sticks.

If we want each bag to have the same combination, the greatest number of bags we can make is determined by the Greatest common divisor of the two numbers.

To find the Greatest common divisor of 70 and 40

<u>Step 1:</u> Express each number as a product of its prime factors

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<u>Step 2:</u> Pick each pair of common factors.

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The only factor common to both pairs is 5.

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The greatest number of bags that can be made is 5.

4 0
2 years ago
mary lou is twice geoge's and kate is two years younger than george the sum of all of their ages is 46 how old is everyone​
saw5 [17]

Answer:

George is 12, Mary Lou is 24 and Kate is 10.

Step-by-step explanation:

To find these, start by setting George's age as x. This means that we can model Mary Lou's age as 2x, since she is twice as old. We can also model Kate's age as x - 2 since she is two years younger. Now we can add these 3 together and set equal to 46

x + 2x + x - 2 = 46

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This means that George is 12.

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Kate = x - 2

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3 0
3 years ago
Read 2 more answers
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GREYUIT [131]

Answer:

second choice

Step-by-step explanation:

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2 years ago
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boyakko [2]

\bf \stackrel{\textit{first year}}{2000}~~,~~\stackrel{\textit{second year}}{2000+\stackrel{\textit{10\% of 2000}}{\frac{2000}{10}}}\implies 2200

now, if we take 2000 to be the 100%, what is 2200? well, 2200 is just 100% + 10%, namely 110%, and if we change that percent format to a decimal, we simply divide it by 100, thus \bf 110\%\implies \cfrac{110}{100}\implies 1.1.

so, 1.1 is the decimal number we multiply a term to get the next term, namely 1.1 is the common ratio.

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