Answer:
Step-by-step explanation:

Step 1: Subtract 4 form both sides
Step 2: Multiply both sides by (-3). when we are multiplying by (-3) the < will change to >.

Answer:
Part 1) The actual length of the banner is 
Part 2) The area of the banner is 
Step-by-step explanation:
we know that
The scale of the drawing is 
That means ----> 1 cm on the drawing represent 30 cm in the actual
Using proportion
<em>Find out the actual dimensions of the banner</em>
Let
L the actual length of the banner
W the actual width of the banner
<u>For a length of 4 cm in the drawing</u>

Convert the actual length to meters

<u>For a width of 9 cm in the drawing</u>

Convert the actual width to meters

<em>Find the area of the banner</em>

Answer:
B. 12ft
Step-by-step explanation:
Area of kite is 2 times the area of triangle
= 2[(1/2)(4)AC] = 48, ie., AC = 12 ft
Y is the same sorry if i’m incorrect
Answer:
Step-by-step explanation:
Given that a person’s body surface area (BSA) (in meters squared) using the formula

We are to calculate the rate of change of BSA with respect to mass for a person of constant height h = 180 from m =70 to m =80
For this we calculate BSA for 80 kg and BSA for 70 kg first
Rate of change = 
=
i.e. rate of change per 10 kg is 0.129
No BSA does not increase more rapidly