MATHEMATICS HIGH SCHOOL

The diameter of a circle has endpoints whose coordinates are R(-2, 2) and S(4, 2). what is the length of the radius?

Answers

Answer 1

Answer:

Answer: 3 units

Step-by-step explanation:

Using distance formula :

$√((x_2-x_1)^2+(y_2-y_1)^2)$

The diameter of the circle with endpoints R(-2, 2) and S(4, 2) will be

$d=√((4+2)^2+(2-2)^2)=√(36)=6\ units$

Since, the radius of a circle is half of the diameter.

Then the radius of the circle will be

$r=(d)/(2)=(6)/(2)=3\ units$

Hence, the radius of the circle = 3 units.

Answer 2

Answer:

Answer:

the answer is 3

Step-by-step explanation:

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What is the answer to (-2) + 3

Answers

The 'answer' is +1. The problem is the mathematical description of being 2 floors underground and then riding the elevator 3 floors up.

6. You deposit $1500 in an account that pays 5% interest yearly.a. Write an exponential equation describing this situation.

b. How much money do you have after 6 years?

Answers

The answer to B is $1950 because the 5% equal 75 dollars and 75 times 6 equals 450 so 1500 plus 450 equal 1950

8 = -8
A True
© False
????

Answers

Answer:

FALSE

Step-by-step explanation:

Answer:

False

Step-by-step explanation:

8 does not equal -8 becsue one is positive and the other is negative

A certain type of bacteria doubles every 8 hours. A culture begins with 30 000. Without use of given equation, use the help of your ability to set up a pattern to determine how many bacteria are there after a) 8 hours b) 16 hours c)d days

Answers

Not sure what you mean by "without use of given equation".
At time 0hrs, there is 30 000.
Since it doubles every 8hrs, at time 8hrs there is 60 000 or 30 000 x 2
In another 8hrs, it will double again, so at time 16hrs, it will be 120 000 or 30 000 x 2 x 2
In another 8hrs, double again, so at time 24hrs, it will be 240 000 or 30 000 x 2 x 2 x 2
This is also 30 000 x 8 as 2x2x2=8. I'll come back to this later.

You add an extra x 2 for each 8 hrs. By the end of the 2nd day, it would be
30 000 x2 x2 x2 x2 x2 x2
This is also
30 000 x8 x8
Every day we add an extra x8
We use powers to specify this.
30 000 x 8^d
So after 4 days
30 000 x 8^4 = 30 000 x8 x8 x8 x8
Note that this is NOT the same as 30 000 x 8 x 4

How many grams are in 15 kilograms? 1.5 150 1,500 15,000