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exis [7]
3 years ago
13

Pls help with these two math questions

Mathematics
2 answers:
densk [106]3 years ago
7 0
I see it’s math but 1-1= 0
-BARSIC- [3]3 years ago
4 0

Number 18 is D) (3+8m)-7

Number 19 is:

1) z>1

2) z>-1

3) z<1

4) z<-1

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M+(7-9)/n when m =2.5 and n =5 i need the answer fast plz<br> ✨
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Answer:0.1

Step-by-step explanation:

Substract ,add & divide

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2 years ago
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___% of $10 = $2<br> Please help me I can not figure it out <br> I need it please
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20 :)

Step-by-step explanation:

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A spherical ball has a radius of 12 cm. The cost to cover the sphere is $0.05/cm^2. The total cost to cover the ball is:
Umnica [9.8K]

Answer:

Step-by-step explanation:

surface area of sphere=4πr²=4π×12²=576π

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7 0
2 years ago
Hannah is designing containers to hold 300 cm3 of juice. Which container is more efficient?
Lubov Fominskaja [6]

Answer:

a) 2nd container is more efficient and contains the elements for a container.

b) The cylinder has a........A)Smaller surface area B)bigger C)equal

And will cost.....A)Less to produce B)more C)The same

Step-by-step explanation:

a) The 2nd container has these elements:

Width 20.5cm

Length 6.5cm

side 3.25cm

So, the volume in cubic cm is 20.5 x 6.5 x 3.25 = 433cm3.

This container can hold the 300cm3 of juice.

b) A cylinder is a geometric solid common in everyday life.  Examples of a cylinder are soup cans, food tins, drink cans, candles, toilet paper rolls, cups, aerosol cans, flower vases, test tubes, fire extinguishers, plant containers, salt shakers and pencil holders.  The two ends are called bases, and are usually circular.  Though, they can take other shapes.  When a cylinder is unrolled and flattened out, the side is actually a rectangle.

The surface area of a cylinder is the surface area of each end plus the surface area of the side.  The mathematical formula is 2π * r2, where π is the pie and r is the radius of the end and r2 is r squared..

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3 years ago
Rock bands often stack their speakers in an array. One teen banda
Viefleur [7K]

Answer:

2*12

3*8

4*6

6*4

8*3

Step-by-step explanation:

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2 years ago
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