Evaluate the expression 2x - 5 when x =3?
A) -4
B) 1
C) 6
D) 11

B)1

Step-by-step explanation:

When you replace x with three your equation is 2*3-5. By doing order of operations you multiply 2*3 and get 6 then subtract 5 getting 1.

The answer is B!

Step-by-step explanation:

2(3)-5

6-5

1

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

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: