4 (3a+2) = 5
12a + 8 = 5
12a = -3
a = -3/12 = -1/4
a = -1/4
Answer:
A = 60
B = 55
C = 65
Step-by-step explanation:
The sum of the angles of a triangle is 180
A + B+C = 180
x+ x-5 + 65 = 180
Combine like terms
2x+60 =180
Subtract 60 from each side
2x= 180-60
2x= 120
Divide by 2
2x/2 = 120/2
x= 60
A = 60
B = 60-5= 55
C = 65
Answer:
W=30m L=90m
Step-by-step explanation:
A =2,700 m²
L=W+60
we know that area of a rectangle is A=L*W so we sustitute what we know
A=L*W
2,700 = (W+60)*W distribute
2,700 = W² +60W subtract 2,700 from both sides
W²+60W-2,700 =0
solve the quadratic equation with quadratic formula or on the calculator on the graph and will get W= -90 and W=30. Reject the -90 value because we can not have negative measurements. Our solution is W=30
L=A/W=2,700/30=90
Answer:If the expression cannot be factored, write cannot be factored. 5. 4x + 12. 6. 5x + 35. 7.
Step-by-step explanation:
Basically just convert this into an equation:
Let’s use “x” as the result
“•” is the multiplication symbol
Double s: s•2
Subtract t from result: =x-2
So, s•2=x-2