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julia-pushkina [17]
3 years ago
8

1/7 and 1/7 is resiprocal inverse. inverse in the inverse. aditive inverse. multiplicative identity​

Mathematics
1 answer:
valentinak56 [21]3 years ago
7 0

Answer:

Step-by-step explanation: Additive inverse of −7=7

The multiplicative inverse of a number for any n is simply 1/n

The reciprocal of a number obtained is such that when it is multiplied with the original number the value equals to identity 1.

Multiplicative inverse of −7= − 1/7

​   Therefore, required sum is 7−  

7-  1/ 7=48

​  

 

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In which quadrant or on which axis each of the following points lie.
AlekseyPX

Answer:

(-3,5) Quad 2

(4,-1) Quad 4

(2,0) Positive X axis

(2,2) Quad 1

(-3,-6)​ Quad 3

Step-by-step explanation:

3 0
3 years ago
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1. The equation of a circle is x^2 + y^2 + 6x - 4y + 4 = 0. What are the center and the radius of the circle? Show ALLLLLL your
Novosadov [1.4K]

Answer:

(2, -3) and r = 3.

Step-by-step explanation:

you can also plug this equation in desmos but I guess it's good to know how to do it also:

The equation of a circle is (x-h)^2 + (y-k)^2 = r^2

Now in order to make a perfect square on both sides, we need to do this:

First add 9 to both sides:

x^2 + 6x + 9 + y^2 -4y +4 = 9.

I purposely shifted it to show the perfect square created when you add 9 to both sides. Factor:

(x+3)^2 + y^2 - 4y + 4 = 9.

now the second bolded part is allso a perfect square. Factor:

(x+3)^2 + (y-2)^2 = 9

Based on the equation of a circle, the center must be at (2, -3) and the radius is the square root of 9 which is 3.

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8 0
2 years ago
Find the perimeter of triangle abc with coordinates (6,6) (2,2) (7,-3)
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3 years ago
A hydraulic lift is to be used to lift a 2000-kg weight by putting a weight of 25 kg on a piston with a diameter of 10 cm. Deter
grigory [225]

Answer:

88 centimeters is the diameter of the cilinder

Step-by-step explanation:

The pressure on both ends of the lift must be the same. Assuming the piston is cilindrical, its area will be A=π*r² where r is half the diameter

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This is the radius, meaning that the diameter will be twice this number

6 0
3 years ago
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