Answer:
Step-by-step explanation:
Answer:
31 = 2⁵ -1
31 = 16²- 15²
Step-by-step explanation:
As we know that
2¹=2
2²= 4
2³= 8
2⁴= 16
2⁵=32
So
32 = 2⁵
By subtracting 1 in bot sides
32-1 = 2⁵ -1
31 = 2⁵ -1
So
2⁵ -1 = 31
By comparing with
p= 5
As we know that
15²= 225
16² = 256
16²- 15² = 256-225 = 31
16²- 15² = (16+15)(16-15)
31 = (16+15)(16-15)
Answer:
Speed of Jet in Still Air = 265 miles per hour
Speed of Wind = 22 miles per hour
Step-by-step explanation:
Let x be speed of jet
and c be speed of wind
We know D = RT, where
D is distance
R is rate
T is time
For first leg:
1435 miles in 5 hours, the rate is:
Rate = 287 mph
For second leg:
1215 miles in 5 hours, the rate is:
Rate = 243 mph
So 287 is with wind and 243 against wind, thus we can write:
x + c = 287
x - c = 243
Adding gives us:
2x = 530
x = 265 miles per hour [still rate]
Speed of wind:
x + c = 287
265 + c = 287
c = 22 miles per hour [speed of wind]
The answer would be C because it’s the only fraction that does not equal 0.4
Answer:
a. Triangular prism , b. 157.5cm squared , c. 369cm ,d. 405 cm cubic
Step-by-step explanation:
b. I assume lateral meabs the area which is visible ( exclude dotted lines)
c. sum of areas of all 5 shapes used to make the triangular prism ( L×W ) + l×w +l×w + 1/2×bh +1/2×bh
d. volume = AREA OF CROSS SECTION(which is a triangle) ×LENGHTH or Height(6cm)
