We have such system of eq
First lets solve second eq
7x=21 /:7 divide both sides by 7
x=3
Now we can substitute it to first equation
9x-2y=19
9*3-2y=19
27-2y=19 /-27 subtract 27 both sides
-2y=-8 /:(-2) divide both sides by -2
y=4 - its the answer
Answer:
27 Chickens
Step-by-step explanation:
<em>Represent the chicken with A and the cows with B</em>
Given
A has 2 legs and B has 4; So:
Required
Determine A and B
Make B the subject of formula in the first equation
Substitute 30 - A for B in the second equation
Open the bracket
Collect Like Terms
Divide through by -2
<em>Hence, the farmer has 27 chickens</em>
Answer:
The lines are right on top of each other.
Step-by-step explanation:
It looks like you tried to write
e^4^x
which I would interpret as either
(so the exponent on <em>e</em> is 4<em>ˣ </em>)
or
(so the exponent on <em>e</em> is 4<em>x </em>)
as it's shown in the question body.
If you meant the first case,
If you meant the second case,
Answer:
The answer is -21
Step-by-step explanation:
To find the answer just multiply 7 by 3 and that's 21, so just add a negative sign to 21 and you get -21. I hope this helps :) please give me brainliest :)