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mamaluj [8]
3 years ago
5

True or false a multiple of 3 must end in 6 or 9

Mathematics
2 answers:
Eva8 [605]3 years ago
4 0

Answer: False

Step-by-step explanation: 18 is a multiple of 3 and doesn't end in 6 or 9.

dmitriy555 [2]3 years ago
4 0

Answer:

True

Step-by-step explanation:

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Simplify -6x(9-12) ??
olga55 [171]
18x. Is your answer. :)
6 0
2 years ago
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Find the volume of the solid where the cone and half sphere are hollow. Use 3.14 for П ; height is 19 in; radius is 5 in. Round
Vera_Pavlovna [14]

Volume of Solids

The volume of the solid is 758.83 in³

Step-by-step explanation:

Given that the cone and half sphere is hollow

The volume of the cone = 1/3 \pi r^{2} h\\

The Volume of the sphere  = 4/3 \pi r^{3}

So the Volume of the half sphere =2/3\pi r^{3}

The volume of solid = volume of cone + volume of the half sphere

V = V_{1}  + V_{2}

Given

height h = 19 in

radius r = 5 in

V_{1\\}  = 1/3 \pi r^{2} h

     = 1/3 × 3.14 × 5 × 5 × 19

     = 497.16 in³

V_{2}  =  2/3 \pi r^{3}

   = 2/3 × 3.14 × 5 × 5 × 5

   = 261.67 in³

V =  497.16 in³ + 261.67 in³

  = 758.83 in³

Hence the volume of the solid is 758.83 in³

3 0
3 years ago
I Need An Answer Please ❤️
damaskus [11]
I would have to say 32,4 but i would double check it
8 0
3 years ago
2x(x - 3) + 7(x - 3)<br> Can I have an explanation on how it works factors
Nimfa-mama [501]

Answer:

Step-by-step explanation:

2x(x - 3) + 7(x - 3)

2x^2 - 6x + 7x - 21

reduce

2x^2 + x - 21

if this is equal to 0 then:

2x^2 + x - 21 = 0

factored:

(2x + 7)(x - 3) = 0

How that was done:

Divide the (2x^2) into (2x) and (x).

Divide the (-21) into (+7) and (-3). You choose these numbers so that their sum, when multiplied by (2x) and (-3), adds up to (+x).  

8 0
3 years ago
Examine the power 5^3<br> What is the base?
Keith_Richards [23]

Answer:

5

Step-by-step explanation:

the base is the original number which you perform an action on. in this scenario the action is 3. 5 is being cubed

7 0
3 years ago
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