He said that it was the best
The mistake was when she multiplied the 2nd equation by 5, she forgot to also multiply that last number 10 by 5 as well.
correction :
5x + 3y - z = 15
-x + 2y + 3z = 10...multiply by 5
---------------------
5x + 3y - z = 15
-5x + 10y + 15z = 50 (result of multiplying by 5)
--------------------add
13y + 14z = 65
Answer:
A: 4
B: -2
Step-by-step explanation:
calculate dy/dx:
A: 1 to the right and 4 up: gradient is 4/1 = 4
B: 2 to the right and 4 down: gradient is 4/-2 = -2
Answer:
<em>The answer is</em> <em><u>x squared divided by 8 plus squared divided by 5=1 </u></em>
Hope this helps :)
Answer:
1/7
Step-by-step explanation:
2 is the amount of coins and 14 is the total amount of items she has. we can divide 2/14 to find the probability which is equal to 1/7.
hope this helps!
