Trevor plans to solve the system of equations using elimination. Which of the following represents a reasonable first step Trevor could take? 2x − 3y = -10
4x + y = 8

A.

Multiply the 1st equation by 2

B.

Subtract 4x from both sides in the second equation

C.

Multiply the 2nd equation by 3

D.

He can just add them, nothing needs to be multiplied

correct

step-by-step explanation:

pakistan's principal natural resources are arable land and water. about 25% of pakistan's agriculture accounts for about 21% [1] of gdp and employs about 43% of the labour force. in pakistan, the most agricultural province is punjab where wheat and cotton are the most grown.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: