Answer:
Yes
Step-by-step explanation:
You can test if a triangle is right-angled by using Pythagoras' Theorem.
So:
16 + 56.25 = 72.25
They do in fact add up so this triangle is right angled.
Answer:
(a) Step 2. 9x -12 = 13 +2x
Step-by-step explanation:
The distributive property says a factor outside parentheses multiplies each term inside parentheses. It is an error to do addition of the factor, or to miss multiplying a term.
In Step 2 of this "solution", the factor of 3 is erroneously <em>added</em> to each coefficent inside parentheses. It should be <em>multiplied</em>.
Correct Step 2: 9x -12 = 13 +2x
__
The rest of the solution should be ...
Step 3: 9x -2x = 13 +12
Step 4: 7x = 25
Step 5: x = 25/7
___
<em>Check</em>
3(3(25/7) -4) = 8 + 2(25/7) +5
3((75 -28)/7) = 13 +50/7
141/7 = 141/7 . . . . . answer checks OK
(-18-4)+(4-14)
(-22)+(-10)
-22-10
-32
hope this helps! :)
It would equal 8 because 2 times 2 equals 4, than 4 times 2 equals 8. Hope this helps!
(2,5) (6,8)
Y2-Y1 divided by X2-X1
8-5=3
———-
6-2=4
so your slope is 3/4
