The expression is simply -2-18. When you have an expression like this, just put the together and the put a box around the first number don't forget the sign, and then the next put one around the sign and the number. If this doesn't make any since, sorry we just started this unit
Answer:
a)27-x
b)27+x
Step-by-step explanation:
when a boat travels in the same direction as the current is downstream-->speeds the boat. If the rate of the boat in still water is 27 mph and the rate of the current of a river is x mph, the rate of the boat when the boat is going downstream is 27+x
when a boat travels against the current is upstream-->slow down. If the rate of the boat in still water is 27 mph and the rate of the current of a river is x mph, the rate of the boat when the boat is going upstream is 27-x
1*2*0.2 = 0.4
Pipe drains 0.4m3 in 30min
Volume of tank = 0.5 * (1.4 + 0.6) * 2 * 1 = 2m3
Time taken = 2/0.4 * 30 = 150min
Answer:
Step-by-step explanation:
y = 3.5(10) + 3.5(5.5) + 3.5(19) - 50 + 3.5(26)
Answer:
145
Step-by-step explanation:
<u>So lets recall what a supplementary angle is. A suppelemenatry angle is two angles that make up 180 degrees.(half circle)</u>
This is different from a complenenary angle with is two angles that make up 90 degrees(quarter circle)
Ok, so we can write the equation for the supplementary angle as:
35+b=180
Lets subtract the angle we knwo from both sides:
<u>b=145</u>
Now we know that B(second angle) must be equal to 145 degrees.
Hope this helps!
