Answer:
40
Step-by-step explanation:
2 • (3(5 + 2) - 1) =
Start with the innermost parentheses.
= 2 • (3(7) - 1)
Now do the multiplication inside the parentheses.
= 2 • (21 - 1)
Do the subtraction inside the parentheses.
= 2 • 20
= 40
Step-by-step explanation:
after 5 seconds
it is the answer
3rd option:
is the correct answer
Step-by-step explanation:
First of all, we have to observe the number line
Observing the number line we can see that the number -0.5 or -1/2 is not included in the solution as the circle on -1/2 is empty. An empty circle means that the number is not included in the solution.
While on the other side we can see that 3 has a filled circle which means 3 is included in the solution
This means that the solution might be:

By comparing the observation and the answer choices we can conclude that
3rd option:
is the correct answer
Keywords: Inequalities, solution
Learn more about inequalities at:
#LearnwithBrainly
Answer:
x=-8
y=-3
Step-by-step explanation:
I'm not sure if this is right
Pythagorean Theorem
a^2 +b^2 =c^2
60^2 +b^2 = 78^2
3600+b^2 = 156
-3600 -3600
b^2 =-3444
b=58.685603i