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denis-greek [22]
3 years ago
8

What is the difference between five times a number and twice that number !??? Help asap!!

Mathematics
2 answers:
ladessa [460]3 years ago
7 0
When you times a number by two you times a number by two and you times a number by five
polet [3.4K]3 years ago
7 0

Answer:

5x-2x=3x

Step-by-step explanation:

You don't know what that number is. That's why you are using a variable. Difference is abviously subraction. Therefore, 5x-2x is equal to 3x


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7- a. What is the radius of the circle with center (3,10) that passes through (12,12)?
loris [4]

Answer: a. Radius of circle = \sqrt{85}

b. The equation of this circle : (x-3)^2+(y-10)^2=85

Step-by-step explanation:

Given : Center of the circle = (3,10)

Circle is passing through (12,12).

a. To find the radius we apply distance formula (∵ Radius is the distance from center to any point ion the circle.)

Radius of circle = \sqrt{(12-3)^2+(12-10)^2}

Radius of circle = \sqrt{(9)^2+(2)^2}=\sqrt{81+4}=\sqrt{85}

i.e. Radius of circle = \sqrt{85}

b. Equation of a circle = (x-h)^2+(y-k)^2=r^2 , where (h,k)=Center and r=radius of the circle.

Put the values of (h,k)= (3,10) and r= \sqrt{85} , we get

(x-3)^2+(y-10)^2=(\sqrt{85})^2

(x-3)^2+(y-10)^2=85

∴  The equation of this circle :(x-3)^2+(y-10)^2=85

6 0
3 years ago
6 hm cubed to km cubed​
zvonat [6]

Answer:

0,006 I assume.

Step-by-step explanation:

8 0
3 years ago
The midpoint of XY is Z. If XY = 3n and XZ = n + 15, what is YZ?
Degger [83]

Answer:

the only thing i know that n=-30

8 0
4 years ago
Solve by finding the square root 2x^2=32
Cerrena [4.2K]

2x^2=32 so divide by 2 to make x^2=16 and the square root so x=4
8 0
3 years ago
Read 2 more answers
Solve for x. x3 =−125
mafiozo [28]

Answer:

x = -5 or x = 5 (-1)^(1/3) or x = -5 (-1)^(2/3)

Step-by-step explanation:

Solve for x:

x^3 = -125

Taking cube roots gives 5 (-1)^(1/3) times the third roots of unity:

Answer:  x = -5 or x = 5 (-1)^(1/3) or x = -5 (-1)^(2/3)

6 0
4 years ago
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