Answer:
a>-21(1/3)
Step-by-step explanation:
3/4a>-16
first thing is to divide both sides by 3/4 to isolate the variable.
Since it is not negative, the sign stays the same.
-16/0.75=-21.3 repeating or just 1/3
Answer:
yeah it is
y is directly proportional to x
proportionality constant is 9
Answer:
x = 5
Step-by-step explanation:
Sides of large triangle: 4x and 15
Corresponding sides of small triangle: 3x + 1 and 12
620 --> aumentando 35%
35% de 620 = 35*620/100 = 35*62/10 = 217 (aumento)
Montante = 620 + 217 = 837
Answer:
c)-5(3x+2y)(3x-2y)
Step-by-step explanation:
1) lets find out if -45 and 20 have a GCF
-45 and 20 are both dividable by -5 so
-5(9x^2-4y^2)
1) you can see that 9 and -4 are perfect square so:
-5(3x+2y)(3x-2y)
Recheck:
1) lets use FOIL to see if this is right(if its right we will get back our original equation)
-5(9x^2-6xy+6xy-4y^2)
-5(9x^2-4y^2)
-45x^2+20y^2
hope this helps!
