Answer:
Step-by-step explanation:
The submarine is underwater for 6 seconds. The submarine hits the water after 1 second and comes back up at the 7th second.
Answer:
Step-by-step explanation:
Area of any triangle is:
A = height * base / 2
Answer:
x=4
Step-by-step explanation:
|2x + 5| = 13
-5 -5
|2x| = 8
2x/2 8/2
|x| = 4
Hello,
++++++++++++++++++++++
Answer B
++++++++++++++++++++++
2x²+28x-5=2(x²+2*7x+49)-5-2*48
=2(x+7)²-103
++++++++++++++++++++++++++++++
Answer:
x = 20
Step-by-step explanation:
→ Remember how many degrees are on a straight line
180°
→ Set up an equation
2x + 70 + 3x + 10 = 180
→ Simplify
5x + 80 = 180
→ Minus 80 from both sides
5x = 100
→ Divide both sides by 5
x = 20
