Answer:
Step-by-step explanation:
-20 = -7 + 8n + 3
-20 + 7 - 3 = 8n
-16 = 8n
-16 / 8 = n
-2 = n <====== answer B
(2 x + 1):15=(x-1):7
7(2x+1)=15(x-1)
14x+7=15x-15
14x-15x=-15-7
-x=-22
x=22
Answer:
139.9 
Step-by-step explanation
here r=3 in, h =15 in
Volime =(1/3)x3.14x9x15=139.9
hope this helps :)
Recall that a circle has a total of 360°, now the arc that is NOT part of "x", is 250°, therefore the leftover, namely the arc made where "x" is at, has to be 360° - 250<span>°, that's the degree measure of that arc.
now, arc's get their angle measure from the central angle they're in, in this case, "x" is the central angle, and therefore, it has the same measure of 360</span>° - 250°.
Leak rate is affected by the pressure difference (inlet vs outlet), the type of gas that is leaking and the flow characteristics of the leak path. In terms of units, a leak rate can be defined in different ways, but if the SI units are used, then this is expressed in mbar·litre/second.
