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Lesechka [4]
3 years ago
12

Part a) Write the equation of the circle by completing the square.

Mathematics
1 answer:
Veronika [31]3 years ago
4 0
X² +4x+y²-2y=20
x²+2*2x+4 +y²-2y+1    =20+4+1
(x+2)²+(y-1)²= 25
(x+2)²+(y-1)²= 5²
center (-2,1)
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1. The sum of two number is x. If one of the numbers is 16, what is the other number?
Vlada [557]
I hope this helps you




first number 16



second number ?



Sum of these numbers =x


x=16+?


?=x-16



3 0
3 years ago
3.
Jobisdone [24]

Answer:

B and D

Step-by-step explanation:

B because if you dont and it is a real cop you would get an even bigger fine. D because you never know.

4 0
3 years ago
Pls help I will mark brailiest​
Elena L [17]

Answer:

c,d,e

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Determine the volume of the rectangular prism.<br>​
Flauer [41]

Answer:

<h2><u>50 ft³</u></h2>

Step-by-step explanation:

We know the formula for a rectangular prism is length × width × height

We also know all the sides so we can rewrite the formula replacing variables.

The length is 8, the width is 2\frac{1}{2} and the height is 2\frac{1}{2}

8 × 2\frac{1}{2} × 2\frac{1}{2}

Multiply which ever way is easy for you. I am just multiplying from left to right.

8 × 2\frac{1}{2} = 20

20 × 2\frac{1}{2} = 50

Now we get 50. Before we put our answer as 50, there are two more steps.

First we need to add the measurement unit which is feet or ft

We also need to add ³ since it is volume

<u>50 ft³ is our final answer</u>

7 0
3 years ago
The three medals earned in the Olympics are the gold, silver, and bronze medals. In the 2014 Winter Olympics, the United States
marta [7]

Answer:

Let x be the number of silver medals.

As there were two more gold medals than silver ones, gold medals are x+2

We also know that the number of bronze medals was 4 less than the sum of gold and silver, so if there are x + 2 of gold and x of silver, there are x+x+2-4 of bronze.

Now, we can do an equation, as we know there were a total of 28 medals:

x + x + 2 + x + x + 2 - 4 = 28

And we isolate x:

4x = 28

x = 28/4 = 7

There were 7 silver medals, so there were 9 gold ones (7-2) and 12 of bronze (9+7-4).

4 0
3 years ago
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