Answer:
4
Step-by-step explanation:
Make the 10% a decimal
.10
Then multiply it by 40
.10*40
You get 4
<h2>Greetings!</h2>
Answer:
w² + 5w = Area
Step-by-step explanation:
The equation for an area of a rectangle is:
Length x Width = area
If w is the width, and length is 5 units longer than the width, then length can be classed as w + 5
Simply multiply these two values to find the area:
w + (w + 5) =
(w * w) + (w * 5)
w² + 5w = area
This is the area formula as no area has been given, nor can this be simplified.
<h2>Hope this helps!</h2>
2x-9=-x+6
+x +x
3x-9=6
+9 +9
3x=15
x=5
therefore the equations have one solution (x=5)
Answer:
The simplest form of 8:10 would be dividing both numbers by 2 to get:
4pounds:5pounds
4:5
Hope this helps ;)
To determine the cost of the mail, we simply substitute the mass of the package to the given function. Mathematical functions are used to relate two variables, observing how changing one variable affects the other variable. For this case, the cost of a mail and the weight of the package are related by the function <span>y = 0.7x2 –2.5x + 3 where x represents the mass in units of pounds (lb) and y is the cost in units of dollars ($). We calculate cost as follows:
</span><span>y = 0.7x^2 –2.5x + 3
</span><span>y = 0.7(5)^2 –2.5(5)+ 3
y = 8 dollars
Therefore, the cost of mailing a 5 lb package would be 8 dollars.</span>