X-4y=-12
4x-y=12
eliminate y's
multily 2nd equaiton by -4 and add to top one
x-4y=-12
<u>-16x+4y=-48 +
</u>-15x+0y=-60
-15x=-60
divide both sides by -15
x=4
sub back
x-4y=-12
4-4y=-12
minus 4 both sides
-4y=-16
divide both sides by -4
y=4
x=4
y=4
(x,y)
(4,4)<u>
</u>
Ok,First Doing2/2=1 and After
2+1=3
Answer:
80
Step-by-step explanation:
ramans ratio is 2:3
so in 150ml there are 2 parts of juice and 3 parts of water
2x + 3x = 150
x = 30
so, juice in 150 ml of raman's mixture = 2x = 2* 30 = 60ml
meera ratio is 1:4
similarly,
1y + 4y = 100
y = 20
so, juice in 100 ml of meera's mixture is y = 20ml
so, quanitity of juice in final mixture is 60 + 20 = 80
Answer:
x^2+13x+40
Step-by-step explanation:
To solve this, use the FOIL method. Multiply the first terms, then the outside, then the inside and finally the last terms.
We have the binomials:
(x+5) and (x+8)
The first terms are x and x. The outside terms are x and 8. The inside terms are 5 and x. The last terms are 5 and 8.
Multiply these values.
F (first): x and x
x*x= x^2
O (outside): x and 8
x*8=8x
I (Inside): x and 5
x*5=5x
L ( Last): 5 and 8
5*8=40
Now, add all the products together.
x^2+8x+5x+40
Combine like terms. In this case, the like terms are 8x and 5x.
x^2+13x+40
The final trinomial (three terms) is: x^2+13x+40