Answer:
The value of x = 7
Step-by-step explanation:
To solve this, we will have to fist of all know that the sum of all the angles in a right-angled triangle is 180 degrees.
In addition to that, since the triangle is a right-angled triangle, automatically, one of the angles is = 90 degrees
The next thing to do is to add all the angles together and equate them to 180 degrees.
Angle WXZ + Angle ZXY + 90 = 180 degrees
7x+8 + 5x-2 + 90 = 180
12x + 96 = 180
12x = 84
x = 7
Answer:
Option d
Step-by-step explanation:
First multiply matrix A by 9.
Then multiply the matrix B by 5.
When multiplying a matrix by a number x you must multiply each element of the matrix by x.
<u><em>Then we perform operation 9A</em></u>
<u><em>Now we perform operation 5B</em></u>
Now we add the resulting matrices
X = y x z
10 = (-4) x z
Z= -10/4 = -5/2
So now we know z = -5/2
we can find y when x = 2
Again x = y x z
<span>
2 = y x
(-5/2)</span>
<span>So y =2 x (
-2/5) = - 4/5</span>
Double check:
x = yx (x = 2 , y = -4/5), z = -5/2)
<span>
2 = (-4/5) x (-5/2) = 20/10 = 2
Answer: when x = 2, y = -4/5</span>
Answer:
no
Step-by-step explanation: