Hello from MrBillDoesMath!
Answer:
3
Discussion:
Let the number be "n",
2n + 15 = 21 => subtract 15 from both sides
2n = 21 - 15 = 6 => divide both sides by 2
n = 6/2 = 3
Check: Start with 3. Double it (gives 6), add 15 to it ( 6 + 15) which gives 21/
Thank you,
MrB
X=2 3/8 or you can write it x=2.375
So basically x and y are 4 because the hypotenuse of a 45 45 90 triangle is x square root of four. both legs of the triangle are congruent, given taht it’s a 454590
The slopes of perpendicular lines are negative reciprocals.
That means that the product of the slopes of perpendicular lines is -1.
First, we find the slope of the given line.
2x + 3y = 6
3y = -2x + 6
y = (-2/3)x + 6
The slope of the given line is -2/3.
The slope we need is 3/2.
Now we set the slope of the line through the two given points equal to 2/3, and we solve for k.
(-1 - 2)/(3 - k) = 3/2
-3/(3 - k) = 3/2
3/(k - 3) = 3/2
k - 3 = 2
k = 5
