HELP PLS! WILL MARK BRAINLIEST!!!!! 50 POINTS!!!!

Mathematics

1 answer:

UkoKoshka [18]2 years ago

5 0

the lower the valance electrons the more reactive the element.

Since Element B has few electrons it is more reactive

so the answer is Element A is less reactive but will still react

You might be interested in

Slope is 3/7,and (4,9) is on the line

TiliK225 [7]

Answer:

$y-9=\frac{3}{7}(x-4)$

$y=\frac{3}{7}x+\frac{51}{7}$

Step-by-step explanation:

To write the equation of the line using a slope and a point, use the point-slope formula $y-y_1 = m(x-x_1)$ . Here m is 3/7. And the point $(x_1,y_1)$ is (4,9). Substitute the values and simplify.

$y-y_1=m(x-x_1)\\y-9=\frac{3}{7}(x-4)\\y-9=\frac{3}{7}x - \frac{12}{7}\\y=\frac{3}{7}x -\frac{12}{7} + 9\\y=\frac{3}{7}x + \frac{51}{7}$

Both the point slope form and the final simplified form are considered equations of the line.

3 0

2 years ago

Find the value of y and x in the figure

Fed [463]

First, find the interior angle missing:

$180-135=45$

Then, we know all the interior angles in a triangle add up to 180º. So, we add all the values for the interior angles and we equate them to 180. We solve the equation normally.

$45+(4z+9)+(5y+5)=180\\45+4z+9+5y+5=180\\59+4z+5y=180\\4z+5y=180-59\\4z+5y=121$

After that, we must add the two angles on a straight line on the right-hand side and equate them to 180.

$(4z+9)+(9y-2)=180\\4z+9+9y-2=180\\7+4z+9y=180\\4z+9y=180-7\\4z+9y=173$

We compare the equations:

$4z+5y=121\\4z+9y=173$

We simultaneously solve by isolating one of the variables ( $y$ ) in one of the equations ( $4z+5y=121$ ) and substituting into the other ( $4z+9y=173$ ):