4x - 5y = -12
-x + 5y = 18
-------------------add
3x = 6
x = 6/3
x = 2
4x - 5y = -12
4(2) - 5y = -12
8 - 5y = -12
-5y = -12 - 8
-5y = -20
y = -20/-5
y = 4
solution is (2,4) <==
2 ( x + 3 ) + 5x + 12
= (2 × x ) + ( 2 × 3 ) + 5x + 12
= 2x + 6 + 5x + 12
= ( 2x + 5x ) + ( 6 + 12 )
= 7x + 18
Answer:
68.8cm^2
Step-by-step explanation:
A trapezoid=h/2(b1+b2)
A trapezoid=6.4/2(12.9+8.6)
A trapezoid=3.2(21.5)
A trapezoid=68.8cm^2
Answer: 5/12
Step-by-step explanation:
First solve the absolute value
Abs(-9-10)=Abs(-19)
Take Abs(-19)=19
Next, multiply 19 by -1 becuase there is a negative one in from of the abs
-Abs(-19)=-1(19)=-19
Next multiply 12 and 2
12(2)=24
so far you have (-19+24)/(6*2)
Add -19 and 24
-19+24=5
6*2=12
5/12