Answer:
n = 6.2/-10.4=0.5962
Step-by-step explanation:
What is the value of n in the equation. we would make n the subject formula -1.2(2n+4)+6=-9+4(2n+1)
Opening the brackets,
-1.2×2n -1.2×4 + 6= -9 +4×2n + 4×1
-2.4n -4.8 +6 = -9 +8n + 4
-2.4n -4.8 +6 = -9 + 4 + 8n= -5+8n
Collecting like terms
-2.4n-8n = -5+4.8-6
-10.4n =-6.2
n = -6.2/-10.4= 0.5962
Let's check, put n= 0.5962 in the equation
-2.4n -4.8 +6 = -9 +8n + 4
Lefthand side
-2.4×0.5962-4.8+6= -0.230
Right hand side
-9+ 8× 0.5962 +4
=-9 +4.7696 +4
=0.230
Right hand side = left hand side
it is unreasonable because 4.23 is bigger than 4.135! Look at the 10s place - 1 is smaller than 2, and everything afterwards is irrelevant. There could be as many zeros or any combination of numbers you want, but as long as that tens place is larger (2 vs 1), than it's not reasonable to say 4.2 is smaller!!
Answer:
(a) and (e)
Step-by-step explanation:
Given
Required
Select the true statements
First, is a statement about the area.
The area is calculated as:
So, we have:
(a) is true
Next, is a statement about the circumference.
This is calculated as:
So, we have:
(e) is true
The answer is -3 because
-|28|= -28 now the problem looks like -28+(-5)^2
(-5)^2=25
-28 +25= -3
Answer:
about 26.6 times
Step-by-step explanation:
The circumference of the ball is found from ...
C = 2πr = 2π(4.3 in) ≈ 27.02 in
There are 12 inches per foot, so the 60 foot distance of interest is ...
(60 ft)×(12 in/ft) = 120 in
In terms of ball circumference, that distance is ...
(120 in)/(27.02 in/rotation) ≈ 26.6 rotations
If the ball starts rotating at the foul line, it will turn about 26.6 times before reaching the head pin.
