WILL GIVE BRAINIEST: A beetle weighs 8.7 x 10^-3 gram. What is 8.7 x 10^-3 written in standard form?

.0087

Step-by-step explanation:

8.7 x 10^-3

10^-3  means move the decimal to the left 3 places.  The negative means left, positive would mean right.  We add 0 to make enough places to move it to the left 3

008.7

Move it 3 places left

.0087

This is in standard form

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

step-by-step explanation:

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