Factorise 4b² + 16b ⇒ 4b(b+4)
expand (a-1)(a-2) ⇒ a(a-2) - 1(a-2) ⇒ a² - 2a - 1a + 2 ⇒a² - 3a + 2
factorise x² + 8x + 7 ⇒(x + 1) (x + 7)
evaluate y⁶ / y² ⇒ y * y * y * y * y * y / y * y = y⁴
if x = -1 and y = 5, find z when z = x² + 2y² ;
z = -1² + 2(5²) ⇒ 1 + 2(25) ⇒1 + 50 = 51
Make x the subject: y = 4x - 3
y = 4x - 3
<u>+3 +3</u>
3 + y = 4x
<u>÷4 ÷4 </u>
(3+y)/4 = x
Answer:
Each interior angle = 135 degrees,
Step-by-step explanation:
The exterior angles of all convex polygons add up to 360 degrees.
So for a regular octagon each exterior angle = 360 / 8
= 45 degrees.
Therefore each interior angle = 180 - 45 = 135 degrees,
open circle means less than or greater than (NO EQUALS)
line to the left means less than
x< 2
Choice A
closed circle means less than or equal to or greater than or equal to
line to the left means less than
x<=-4.25
Choice B
This is it if you want it written as an equation:
n - 16
Quotient is the result of dividing two numbers.
x= the unknown number
The equation is x divided by 9 equals x minus 40.
x/9= x - 40
multiply both sides by 9
(9)(x/9)= (9)(x - 40)
x= 9x - 360
subtract 9x from both sides
-8x= -360
divide both sides by -8
x= 45
ANSWER: The number is 45.
Hops this helps! :)