Q. A=1/2h(B+b); A=63, B=6, b=3. Help me solve step by step please
This is the equation for area of trapezoid.
substituting given values in this equation we get,
2*63 = h(6+3)
Hope this helps! LEt me know if you have any questions.
Suppose the slope of line AB is greater than 0 and less than 1. What inequality represents the slope of a line perpendicular to line AB
lets say slope of AB is m and slope of the line perpendicular to AB is m1
Slope of the line perpendicular to AB will be negative reciprocal of m.
Consider the equation y = 2x + 5 . Slope of this line is 2.
Line perpendicular to this is x+2y = -2
2y = -2-x
y = -x/2 -1
So slope of this line is -1/2 which is negative reciprocal of y =2x+5!!
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Which two values of x are roots of the polynomial below? x^2-11x+17 please explain
To solve this is a quadratic equation ang you can use a quadratic formula to find roots.
Here is the formula x = [-b +/- ( b^2 – 4ac) ] / 2a
In this case b= -11, a =1 and c = 17 (compare your equation with ax^2 +bx +c)
putting these values in the formula and solving we get x = [11 +/- sqrt(53)]/2 = [11 +/- 7.28]/2
x = 1.86 and x = 9.14
Hope this helps. Let me know if you need any further explanation. Thanks!
The ratio of the areas of two similar polygons is 225:36. What is the ratio of their corresponding sides?
Ans: The ratio of the areas of the two polygons is the square of the ratio of the sides.
Ratio of area of polygons is 225:36 So the ratios of their corresponding sides is sqrt(225:36) = 15:6
Hope this helps. 🙂
This is a linear equation.
Lets isolate x first,
x = -17 + 7y
Put this value of x in the original eqn to check if the value of x is right
-17+7y -7y = -17
17 = 17
So x – -17+7y
i dont get this heres my question. indicate the solution for each system and classify each system as consistent or inconsistent, and dependent or independent.
and heres another one
Answer: The equations of a linear system are consistent if they possess a common solution, and inconsistent otherwise.
i) y-2x=4 —>a
subtracting a from b we get –> x = -1 putting this value of x in b we get y =2
Thus this system has a solution and is consistent.
ii) 3x+y=4 —>a
y+3x=4 —> b
If we subtract a from b we get 0 = 0 which is a false statement thus system has no solution and is inconsistent.
Hope this helps.
Hello everyone.. I am sorry that I was not able to help you guys with your questions for past month. I have been super busy at work. But now i have some free time so please feel free to ask any math related questions and I will get back to you with answers 🙂
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