A tangent forms a right angle with the centre of circle at the point it touches the circumference. i.e. OAB = 90 degrees
If AOB = 55 degrees, then ABO = 90 - 55 = 35 degrees

3 0

3 years ago

Read 2 more answers

How many times as great is 2x10^-8 is6x10^-3?

Grace [21]

Answer:

300,000.

Step-by-step explanation:

6x10^-3 / 2x10^-8

= 3 x (10^(-3- (-8))

= 3 x 10^5

= 300,000

4 0

3 years ago

Can someone please help me on this??

Usimov [2.4K]

Answer:

Step-by-step explanation:

To solve this use the equation $x^2 -15x - 50 = y$ given in the problem and the value y = 50. Substitute y = 50 then solve for x by factoring.

$x^2 -15x - 50 = 50\\x^2 - 15x -100 = 0$

Find two numbers which multiply to -100 and also add to -15. The numbers are -20 and 5.

So the factored form is (x-20)(x+5) = 0.

Set each factor equal to 0 and solve.

(x-20) = 0 so x = 20.

(x+5)=0 so x = -5.

This means the temperature is 20 degrees C or -5 degrees C. Only 20 is an option. The solutions is C.

3 0

3 years ago

Dominic spent $8 on a book. He made $6 doing chores for a neighbor. What numbers represent the situations?

Katyanochek1 [597]

Answer:

-8 and 6

Step-by-step explanation:

he spent 8 on the book, therefore he had deduced 8 dollars, and earned 6, therefore he had increased 6 dollars

7 0

3 years ago

Read 2 more answers