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3 years ago

13

Identify the sampling technique used: A lobbyist for a major airspace firm assigns a number to each legislator and then uses a c

omputer to randomly generate ten numbers. The lobbyist contacts the legislators corresponding to these numbers.

1 answer:

user100 [1]3 years ago

8 0

Answer: can u explain it more plz

Step-by-step explanation:

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18 - x/3 = -7 I NEED HELP FAST

stellarik [79]

3(18 - x/3 = -7)

54-x = -21

-x = -75

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3 years ago

Identify the center and radius from the equation of the circle given below. x^2+y^2+121-20y=-10x

Tcecarenko [31]

Answer:

Center: (-5,10)

Radius: 2

Step-by-step explanation:

The equation of the circle in center-radius form is:

$(x-h)^2+(y-k)^2=r^2$

Where the point (h,k) is the center of the circle and "r" is the radius.

Subtract 121 from both sides of the equation:

$x^2+y^2+121-20y-121=-10x-121\\x^2+y^2-20y=-10x-121$

Add 10x to both sides:

$x^2+y^2-20y+10x=-10x-121+10x\\x^2+y^2-20y+10x=-121$

Make two groups for variable "x" and variable "y":

$(x^2+10x)+(y^2-20y)=-121$

Complete the square:

Add $(\frac{10}{2})^2=5^2$ inside the parentheses of "x".

Add $(\frac{20}{2})^2=10^2$ inside the parentheses of "y".

Add $5^2$ and $10^2$ to the right side of the equation.

Then:

$(x^2+10x+5^2)+(y^2-20y+10^2)=-121+5^2+10^2\\(x^2+10x+5^2)+(y^2-20y+10^2)=4$

Rewriting, you get that the equation of the circle in center-radius form is:

$(x+5)^2+(y-10)^2=2^2$

You can observe that the radius of the circle is:

$r=2$

And the center is:

$(h,k)=(-5,10)$

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3 years ago

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Whats greater .007 or .07

Karolina [17]

.07 is greater than .007

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3 years ago

M and n are integers such that 6 < m < n. what is the value of n ?

Rainbow [258]

N can be equal to anything below 4 because if they are integers, m will equal to 5 or lower, as long as it is a whole number, but since the greatest possible answer is 5 then we will say m=5. So it is simplified to 6<5<n, and same thing, n is equal to any whole number below 5, so n is equal to 4, 3, 2, 1, 0, etc.

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3 years ago

A checking account was overdrawn by $7

mojhsa [17]

Answer:

7 x 4 = 28 or $28

Step-by-step explanation:

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2 years ago

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