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2 years ago

What is the power of 10 when 0.000028 is written in scientific notation

2 answers:

5 0

Scientific notation<span> is the way that scientists easily handle very large numbers or very small numbers.

For example, instead of writing 0.0000000056, we write </span> $5.6 * 10^{-9}$ .

Hence, in scientific notation

0.000028 = $2.8 * 10^{-5}$

So, the answer is -5. The power of ten has to be -5.

mezya [45]2 years ago

3 0

-5 as that you would have to count that places to the left. You end decimal would have to be between 1 and 10, so it would not count the 8. I'm sorry if my explanation is not good, but that is the right answer

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Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

maxonik [38]

ANSWER

$2 \frac{1}{4}$

EXPLANATION

We want to find the constant that must be added to

${x}^{2} - 3x$

to form a perfect square.

Comparing the given expression to

$a{x}^{2} + bx + c$

we have

a=1 , b=-3 , and c=0.

We need to add

${( \frac{b}{2a} })^{2}$

We substitute the values to get,

${( \frac{ - 3}{2(1)} })^{2} = \frac{9}{4}$

We change this to mix numbers to get,

$2 \frac{1}{4}$

The last choice is correct.

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3 years ago

Find the coordinate of G' after a 90° counterclockwise rotation of the triangle about the origin.

ANEK [815]

Answer:

G'(1, 3)

Step-by-step explanation:

Counterclockwise rotation 90°: (x, y) ⇒ (-y, x)

So the point G is transformed to ...

... G(3, -1) ⇒ G'(1, 3)

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2 years ago

If this is equal to 8 find x

dolphi86 [110]

I think it is A. not sure though

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3 years ago

"assume that josh throws the discus 36 times. let y denote the sum of the lengths of the 36 throws.

cluponka [151]

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3 years ago

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valentinak56 [21]

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2 years ago

Read 2 more answers