(2x-8)(7x+5)=0
2x-8=0
Divide both sides by 2
X-4=0
Add 4 to both sides
X=4
7x+5=0
Subtract 5 from both sides
7x=-5
Divide both sides by 7
X=-5/7
X=4, x=-5/7
Hope this helps :)
The expressions that have a sum of 6 are Options C and D
<h3>How to determine the sum</h3>
In this case, we use the following rules
(-) + (-) = -
(+) + (+) = +
(+) + (-) = -
(-) + (+) = -
From the first case
8 + 2 = 10
(-4) + (-2) = -4 + -2 = -6
(-3) + 9 = -3 + 9 = 6
7 + (-1) = 7 - 1 = 6
Thus, the expressions that have a sum of 6 are Options C and D
Learn more about mathematical signs here:
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Answer:
Since it is an isoceles triangle...both the base angles will be equal to 40 degrees
by angle sum property
Third angle + 40+40=180
The third angle will be equal to 100 degrees
Step-by-step explanation:
hope it helps..
C...................................................................................................................................
a) find the slope of the line using the given points.
Slope: 9 - -3/6-0 then slope is 12/6 which is 2
Then using formula: y = mx+b
-3 = 2(0) + b
b = -3
The equation is: y = 2x -3
B. Slope of a perpendicular is -reciprocal of first line. So here the slope will be -1/2
y = mx + b is used again
2 = -1/2(0) + b
b = 2
The equation is: y = -1/2x +2
