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vovangra [49]
3 years ago
11

Plz help me with this

Mathematics
1 answer:
shtirl [24]3 years ago
5 0
2x-7y=18 _(1)
-2x+4y=5

11y=23 , Y=23/11 sub in 1

2x-7×23/11=18

2x = 18×11 + 7×23

x = ( 198 + 161 )/2 = 359/2
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A diameter of a circle has enpoints (-2, 10) and (6, -4) in the standard (x, y) coordinate plane. What is the center of the circ
wlad13 [49]

Answer:

The center of the circle is C(x,y) = (2, 3).

Step-by-step explanation:

The center of the circle is the midpoint of the segment between the endpoints. We can determine the location of the center by this vectorial expression:

C(x,y) = \frac{1}{2}\cdot R_{1}(x,y)+ \frac{1}{2}\cdot R_{2}(x,y) (1)

Where:

C(x,y) - Center.

R_{1} (x,y), R_{2} (x,y) - Location of the endpoints.

If we know that R_{1} (x,y) = (-2,10) and R_{2} (x,y) = (6,-4), then the location of the center of the circle is:

C(x,y) = \frac{1}{2}\cdot (-2,10)+\frac{1}{2}\cdot (6,-4)

C(x,y) = (-1, 5) + (3, -2)

C(x,y) = (2, 3)

The center of the circle is C(x,y) = (2, 3).

8 0
3 years ago
I would like some help
Anettt [7]

Answer:

D

Step-by-step explanation:

5 0
2 years ago
If you going to answer one question say it in the comments it's gonna be the waste of time bc the answer is going to be deleted
oksano4ka [1.4K]
I am going to do number 2 so when you subtract decimals you have to add two zeros like this 10.00 or 0.25 so now when you subtract you get $9.75
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Describe the shape of the data for German male adults, and explain how you came to that conclusion. Are there any outliers in th
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Desculpe-me eu não sei mas irei falar com meu professor!
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3 years ago
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Doing math watch and have no idea what to do
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Answer:

A=πr^2

=3.142×11.2^2

=3.142×125.44

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3 years ago
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