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Ahat [919]
3 years ago
12

The equation of a circle is x2+y2+10x−4y−20=0 . What is the radius of the circle?

Mathematics
1 answer:
Shtirlitz [24]3 years ago
5 0

Answer: 7

(I just took the test and it's correct) Hope this helps!

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What is the lcm of 81 and 17?​
algol [13]

Answer:

1377

Step-by-step explanation:

The least common multiple (LCM) of two or more non-zero whole numbers is the smallest whole number that is divisible by each of those numbers. In other words, the LCM is the smallest number that all of the numbers divide into evenly.

3 0
2 years ago
52 regular playing cards are randomly dealt to four players with each players receiving 13 cards. What is the probability that e
Vadim26 [7]

Answer:

The probability is 1/28,561

Step-by-step explanation:

Here, we want to find the probability that each of the players will receive exactly one ace.

In a deck of cards, we have 4 suites of 13 cards each, with each of the suites consisting of 1 ace.

So, the probability of getting an ace for each of the four players will be 4/52 = 1/13

Now, the probability of each of the players getting exactly one ace will be; first got one ace , second got one , third got one and fourth got one.

mathematically, this probability will be 1/13 * 1/13 * 1/13 * 1/13 = (1/13)^4 = 1/28,561

7 0
3 years ago
Julia is the president of the technology Club at school she has $568 to buy as many DVD players as she can for $75 each how many
goblinko [34]
You need to divide the total amount by $75, to see how many DVD players she could buy with the $568.
568÷75= 7 remaining 43 
This means that Julia can buy 7 DVD players, and will have $43 extra dollars left over.
5 0
3 years ago
A $310 suit is marked down by 10%. Find the sales price.
Angelina_Jolie [31]

Answer:

The sale price is $279.

Step-by-step explanation:

$310-10%=$279

4 0
3 years ago
Use triangles ABC and A'B'C' for Exercise. Use the coordinates to find the lengths of the sides.
mafiozo [28]

Answer:

AB = 2

BC = 2

A'B' = 6

B'C' = 6

Step-by-step explanation:

5 0
3 years ago
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