1.
6x+2y=- 4
3x+4y=-17

x = 1

y = -5

Step-by-step explanation:

In this question, we need to find what the values of "x" and "y" are.

To do this, we must solve the equations.

Solve:

6x + 2y = -4

3x + 4y = -17

Lets solve for "y" first:

6x + 2y = -4

-2(3x + 4y = -17) = -6x - 8y = 34

Now subtract the two equations from each other.

6x + 2y = -4

-6x - 8y = 34

-6y = 30

Divide both sides by -6

y = -5

Now, we know that the "y" variable's value is -5.

Lets find the value of "x" by plugging -5 to "y" in one of the equations:

6x + 2(-5) = -4

6x - 10 = -4

Add 10 to both sides.

6x = 6

Divide both sides by 6.

x = 1

The value of "x" is 1.

the radius is 2 times the diameter.

step-by-step explanation:

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: