Step-by-step explanation:
but ... you had already correctly answered the first part.
L² + W² = d²
Pythagoras ...
all you needed to do now was do the calculations. no "brainware" needed ...
30² + 10² = d²
900 + 100 = d²
1000 = d²
d = 31.6227766... ≈ 31.6 units
Answer:
24
Step-by-step explanation:
41-17=24
18. inches
Step-by-step explanation:
Find the perimeter of the square;
perimeter of a square = 4(p)
=4 (8)
= 4×8
= 32 inches
Then subtract the perimeter of the square from the total length of the ribbon which is 50 inches.
Length of the ribbon which remained;
= 50 - 32
= 18 inches
Answer:
54 mph
Step-by-step explanation:
we know D = RT, where
D is distance
R is rate/speed
T is time
<u>Normally:</u>
D = RT
378 = RT
<u>This week:</u>
D = RT
378 = (R+9)(T-1)
These are the 2 equations we can write:
Let's mutliply out the last equation:
378 = (R+9)(T-1)
378 = RT - R + 9T - 9
387 = RT - R + 9T
we know RT = 378 and T = 378/R, we replace:
387 = 378 - R + 9(378/R)
9 = -R + 3402/R
Now solving:
R can't be negative, so we take R = 54 miles per hour
Answer:
22.5
Step-by-step explanation:
1/4*6= 1.5
3*7= 21
21+1.5= 22.5
hope this helps <3
