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alexira [117]
2 years ago
14

How to show that a function is surjective?

Mathematics
1 answer:
photoshop1234 [79]2 years ago
6 0
Algebra formula based function
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10 more than 2 times a number is equal to 2 times the number plus 50. What is the number?
PSYCHO15rus [73]

Answer:

y = 40 is the answer

Step-by-step explanation:

Let the number be y

10 more than 2 times a number = 10 + 2×y

equal to 2 times the number plus 50. = 2 × y + 50

10 + 2y = 2y + 50

combine the like terms

2y - 2y =50 - 10

0 = 40

the number supposes be 40 but the number is represented by 0

i think some thing is missing in your question

y supposes be 40 not 0 = 40

Hope this helps!

3 0
3 years ago
Jackie created a horizontal cross section on a cylinder (soda can). What shape did she discover after making the cut?
Nesterboy [21]
It should be a circle. That would be my best guess
5 0
3 years ago
What is the surface area of a cuboid with length 5cm, width 3cm and height 6cm.​
zavuch27 [327]

Answer:

126

Step-by-step explanation:

(2*5*3)+(2*6*3)+(2*6*5)

7 0
3 years ago
Read 2 more answers
The volume of a cone is 3rx? cubic units and its height is x units. Which expression represents the radius of the cone's base, i
Marianna [84]

Answer:

It is given that the volume of a cone = 3\pi x^3 cubic units

Volume of cone with radius 'r' and height 'h' = \frac{1}{3}\pi r^2h

Equating the given volumes, we get

3\pi x^3=\frac{1}{3}\pi r^2h

r^2h=3 × 3x^3

r^2h=9 x^3

It is given that the height is 'x' units.

Therefore, r^2x=9x^3

r^2=9x^2

Therefore, r=3 x

So, the expression '3 x' represents the radius of the cone's base in units.

3 0
2 years ago
Please explain to me how 3.2÷4=0.8 is done
DedPeter [7]

To make it easier just assume there is no decimal point then just work out the 32÷4 where we know that 4 goes into 32 8 times so you get 8 remember the decimal point and since it was one decimal place you will push the decimal over to the left of 8 and that is how you get 0.8

4 0
3 years ago
Read 2 more answers
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