Answer:
Therefore, the centre of the circle is in <u>( -2, 1 )</u>
and the radius of the circle is 2.
<u>Formu</u><u>la</u><u> used</u><u> </u><u>:</u><u>-</u><u>-</u><u>-</u><u>-</u><u>-</u>
equation of the circle
where r is the radius of the circle.
<h2>(A) 2 is the right answer.</h2>
Answer:
(x + 10)(2x + 5)
Step-by-step explanation:
Given
2x² + 25x + 50
Consider the factors of the product of the coefficient of the x² term and the constant term (ac) which sum to give the coefficient of the x- term (b)
ac = 2 × 50 = 100 and b = 25
The factors are + 20 and + 5
Use these factors to split the x- term
2x² + 20x + 5x + 50 ( factor the first/second and third/fourth terms )
= 2x(x + 10) + 5(x + 10) ← factor out (x + 10) from each term
= (x + 10)(2x + 5)
Omg i would just guess and go for the third one
Answer:
18cm²
Step-by-step explanation:
how to calculate the area of rectangle:
l×w
6×3
=18cm²
Step-by-step explanation:
so beacuse these triangles are similiar
we have
SD/SB=CD/AB
6/72=5.2/AB
AB=72×5.2/6=62.4