3 years ago

5.0x 10^10 in scientific notation

Mathematics

1 answer:

AysviL [449]3 years ago

5 0

5.0x10^10
is it a scientific notation\

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2x+y=2 I am trying to solve that problem

posledela

Answer:

y= 2-2x

Step-by-step explanation:

Isolate y.

$2x + y = 2 \\ y = 2 - 2x$

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3 years ago

Simplify<br> x^2(y^3)^4/xy^5=x^a•y^b

givi [52]

Answer: a = 1 b = 7

Step-by-step explanation:

x^2(y^3)^4/x.y^5 = x^a.y^b

x^2(y^12) = x^a.y^b

(x^2).(y^12)/x^y^5 = x.y^7

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What fraction of 3 1/2 is 1 1/6

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3 years ago

Mona solved an equation incorrectly, as shown below:

Vesnalui [34]

Answer:

She did not add 5 to 30. ... Mona subtracted 5 where she should have divided 5.

Step-by-step explanation:

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3 years ago

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Given that cos(30°) = cos(45°)cos(15°) + sin(45°)sin(15°), it follows that cos(30°) =

mario62 [17]

Answer:

$cos(30\°) = cos(45\°-15\°)$

Step-by-step explanation:

To solve this problem you must know the formula of subtraction of angles for the function cosx.

The formula is:

$cos(h-d) = cos(h)cos(d) + sin(h)sin(d)$

We can write 30° as: 45° - 15°

Then:

$cos(30\°) = cos(45\°-15\°)$

Using the formula for subtraction of angles we have:

$cos(45\°-15\°) = cos(45\°)cos(15\°) + sin(45\°)sin(15\°)$

Notice that we have achieved the expression shown in the statement

Finally:

$cos(30\°) = cos(45\°-15\°)$

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3 years ago

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