Answer:
V = 621.4 mm^3
Step-by-step explanation:
The volume of this pyramid is V = (1/3)(base area)(height). We must calculate the height from the info given. Draw in a vertical line to represent the height. Imagine a triangle with hypotenuse 12.8 mm (given) and shorter leg (13 mm)/2, or 6.5 mm.
The Pythagorean Theorem applies here: h^2 + (6.5 mm)^2 = (12.8 mm)^2. We get: h^2 + 42.25 = 163.84, or h^2 = 121.59, or h = √121.59, or
h = 11.03 mm.
Then, as before, the volume of this prism is V = (1/3)(base area)(height), or with specific numerical values V = (1/3)(13 mm)^2(11.03 m), or
V = 621.4 mm^3
Answer:
1. x=-6/5y +38
2. x= -4/3y+122/3
Step-by-step explanation:
i hope this helps ... !! pls thank me !!
<span>54.285 rounded to a whole number is 54.
Hope this helps!!
</span>
Answer:
the answer is 7.
Step-by-step explanation:
here's why......if u place the 3 where a is it will become multiplication so that would be 2 times 3 minus b now but if u place -1 the minus becomes addition so it will be 6+1 which is 7.
Answer:
m +2m +(2m -6) = 19
Step-by-step explanation:
m = number of books sold on Monday.
2m = number of books sold on Tuesday, twice as many as Monday.
2m -6 = number of books sold on Wednesday, 6 fewer than Tuesday.
The total number of books sold on the three days gives the equation you're looking for:
m +2m +(2m -6) = 19
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<em>Additional comment</em>
Solving this gives ...
5m = 25 . . . . add 6
m = 5 . . . . . divide by 5
5, 10, and 4 books were sold on the three days.