Answer:
Y= -4. X=5
Step-by-step explanation:
This is a simultaneous equation
3x+5y= -5 ------------(1)
4x+5y= -8 ------------(2)
Using elimination method
Eliminate x
×4. 3x+5y= -5
×3. 4x+7y= -8
12x+20y= -20
-(12x+21y= -24) Minus
-y=4 therefore y= -4
Substitute x into equation 1
3x+5(-4)= -5
3x-20= -5
3x= -5+20
3x= 15
x=5
Answer:
A
Step-by-step explanation:
2(1)+ 1(2)+ 2(3)+2(4)+ 3(5)/ 10
= 2+2+6+8+15/10
= 33/10
= 3.3
or A
if my answer helps please mark as brainliest.
Answer:
it is 28
Step-by-step explanation:
all you have to do is find what 5 squared is, which its 25 then add 3 which gives you 28, hope this helps
The area of a rectangle is 108cm (squared. the ratio of the width to the length is 3:4
