(16x^2+4x-4x-1)-3=15x^2
16x^2-1-3=15x^2
16x^2-4=15x^2
X^2=4
X=+or-2
Answer:
#1 d= 49t
Step-by-step explanation:
#2 Since the greatest value of n is 9, it means that the value of n is less than or equal to 9. But the values of n cannot be greater than 9. So, we will be using the sign of less than or equal to in the inequality. Thus, (D) is the correct option.
#3 is (29)
#4 is n=15
#5 is y = 7x
#6 is y=7x
Answer: y = 7
Step-by-step explanation:
√8y - 7 = 7
(√8y - 7)^2 = (7)^2
8y - 7 = 49
+7. +7
8y = 56
Y = 7
Where are the numbers at? And if you need a formula for that, A=2(wl+hl+hw)
Step-by-step explanation:
4.
⇒ 
⇒ 
⇒ 
⇒ 
5.
⇒ 
⇒ 
As we know the radius and slant height, we can use Pythagoras' Theorem to find the perpendicular height.
⇒ 
⇒ 
⇒ 
⇒ 
Now substitute this into the volume formula.
⇒ 
⇒ 
⇒ 
6.
⇒ 
⇒ 
⇒ 
7.
⇒ 
⇒ 
⇒ 