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vesna_86 [32]
3 years ago
5

Simplify (4x) · mn · 15 · 2.

Mathematics
2 answers:
Andrej [43]3 years ago
6 0
I think it's 120xmn.
Doss [256]3 years ago
6 0

Answer:

120mnx

Step-by-step explanation:

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Ivahew [28]
You would have $318. Hope this helps out!
5 0
3 years ago
Identify the number of moles of each element present in one mole of NH NO3.
Sergio039 [100]

Answer:

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7 0
3 years ago
This net can be folded to make a square pyramid. what is the surface area of the pyramid
givi [52]

Answer:  

85in^2

Step-by-step explanation:

to find the surface area we need to find the followng areas:  

  • area of the square  
  • area of a triangle and multiply it by 4 (because there are 4 triangles)

And once we have those areas, we add them to find the surface area.

Area of the square:

the formula to find the area of a square is:

a_{square}=l^2

where l is the length of the side: l=5in

thus the area of the square is:

a_{square}=(5in)^2

a_{square}=25in^2

Area of the triangles:

the are of 1 triangle is given by

a_{triangle} =\frac{b*h}{2}

where b is the base of the triangle: b=5in (the base of the triangle is the side of the square)

and h is the height of the triangle: h=6in

thus, the area of 1 triangle is:

a_{triangle} =\frac{(5in)*(6in)}{2}

a_{triangle} =\frac{30in^2}{2}

a_{triangle} =15in^2

the area of the 4 triangles is (we multiply by 4):

a_{4-triangles}=4(15in^2)

a_{4-triangles}=60in^2

finally we add the area of the square and the area of the 4 triangles to find the total surface area:

Surface=25in^2+60in^2

Surface=85in^2

8 0
2 years ago
So I don't understand any of this, my lecture didn't explain how to solve this.
raketka [301]

Answer:

38.5

Step-by-step explanation:

Lets say, first number = x



Second number = 3x+7



Total = 49




(x)+(3x+7)= 49



4x+7 = 49



4x = 42



x = 42/4



x= 10.5




x= 10.5



3x+7 = 3(10.5)+7 = 38.5




Hope this helps!!

7 0
3 years ago
It said it was wrong
IRINA_888 [86]

Answer:

well then, what was right?

Step-by-step explanation:

5 0
3 years ago
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