Answer:
b=-8
Step-by-step explanation:
9+1/4b=7
-2=1/4b
b=-8
The first one is arithmetic with CD = -9.1 so the answer is B
Third one is D
Second question:
a1 = 648 and r = 1/3 so 8th term = 648 * (1/3)^7 = 8/27
Easy peasy
sub -4 for every x
f(-4)=3(-4)-5
f(-4)=-12-5
f(-4)=-17
answer is C
8 of 19 players said that they had 2 or more siblings.
8 out of 19 is equal to what out of 570
8/19 = x/570
This proportion can be written in different ways.
8/19 = x/570 cross multiplies to 19*x = 8*570
The task is to find a proportion among the answer options that cross multiplies to the same equation.
Option C is x/570 = 8/19. That cross multiplies to 19*x = 8*570 and is the correct answer.
<span>an equation that expresses the gross weight of an aircraft as a function of its landing speed will be given as follows:
</span><span> V= √1.223w
we make w the subject of the equation, we start by dividing both squaring both sides:
</span>V²=(√1.223w)²
V²=1.223w
next we divide both sides by 1.223 to get :
V²/1.223=1.223w/1.223
w=V²/1.223
hence the answer will be w=V²/1.223
