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solong [7]
4 years ago
11

Find the center and radius of the circle x2 - 22x + y2 + 20y =4

Mathematics
1 answer:
nasty-shy [4]4 years ago
3 0

Answer:

Step-by-step explanation:

4

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A student says that the algebraic expression 5 x 7 can also be written as 5 7x. is the student correct? explain.
ohaa [14]
Nahhhh
So basically WHERE DID THE x COME FROM anyway ??? 
5 * 7 = 35
but
IT DOES NOT EQUAL TO
57x
It might be true depending on what the x value is, but you dont know what the x value is so ... 
8 0
4 years ago
Determine if (-1,9) and (-2,6) are solutions to the system of equations: x + y = 8 x2 + y = 10 A) Both are solutions B) Neither
Dahasolnce [82]

Answer:

D) Only (-1,9) is a solution.

Step-by-step explanation:

x+y =8

x^2 + y = 10

Lets check the first point (-1,9)

Put in x =-1 y =9

x+y =8

-1+9 = 8

8 =8

This works

x^2 + y = 10

(-1)^2 +9 =10

1+9 = 10

10 = 10

This works

Lets check the second point (-2,6)

Put in x =-2 y =6

x+y =8

-2+6 = 8

4=8

This  does not work

We can stop now.  (-2,6) cannot be a solution

7 0
3 years ago
Help please<br><br> integral of sqrt (x^2+6x) dx
s344n2d4d5 [400]
<span>The integral of (x^2 + 6x)dx is 1/3x^3 + 3x^2 + c.
 Because this is not an integration with specific bounds, you must include a constant at the end. In general, to integrate, add 1 to the exponent of x and then whatever number is the exponent of x, divided the number in front of x by that.</span>
3 0
3 years ago
Blackcap birds (Sylvia atricapilla) migrate out of Germany before wintertime. Prior to the 1960s, all members of a particular bl
UkoKoshka [18]

Answer:

D- The blackcaps will begin nesting at their wintering sites in Spain or the United Kingdom, resulting in a larger blackcap population migrating back to Germany after the breeding season has ended.

Step-by-step explanation:

By the inhabitants of Spain and the United Kingdom placing feeders out for the blackcaps, the birds in their nesting sites during the winter will have food to eat, meaning a bigger population of the Blackcaps when they return to their main home in Germany.

This best predicts the effect on the blackcap population if humans in the United Kingdom continue to place food in feeders during the winter.

8 0
3 years ago
Positive irrational numbers; addition<br> Someone please help me!!
kap26 [50]

Answer:

Addition is...

1+1 = 2

But addition irrational numbers is...

π + 5 normally when using pi (π) the numbers are 3.14 but the number is infinite, all irrational numbers are infinite

then the sum will be 3.14 + 5 = 8.14

4 0
4 years ago
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