Since both x values are the same and since the y values are 18 digits apart, the distance between both points is 18 units.
Answer:
The value of x that maximizes the volume enclosed by this box is 0.46 inches
The maximum volume is 3.02 cubic inches
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
The volume of the open-topped box is equal to
![V=LWH](https://tex.z-dn.net/?f=V%3DLWH)
where
![L=(7-2x)\ in\\W=(2-2x)\ in\\H=x\ in](https://tex.z-dn.net/?f=L%3D%287-2x%29%5C%20in%5C%5CW%3D%282-2x%29%5C%20in%5C%5CH%3Dx%5C%20in)
substitute
![V=(7-2x)(2-2x)x](https://tex.z-dn.net/?f=V%3D%287-2x%29%282-2x%29x)
Convert to expanded form
![V=(7-2x)(2-2x)x\\V=(14-14x-4x+4x^{2})x\\V=14x-14x^2-4x^2+4x^{3}\\V=4x^{3}-18x^{2} +14x](https://tex.z-dn.net/?f=V%3D%287-2x%29%282-2x%29x%5C%5CV%3D%2814-14x-4x%2B4x%5E%7B2%7D%29x%5C%5CV%3D14x-14x%5E2-4x%5E2%2B4x%5E%7B3%7D%5C%5CV%3D4x%5E%7B3%7D-18x%5E%7B2%7D%20%2B14x)
using a graphing tool
Graph the cubic equation
Remember that
The domain for x is the interval -----> (0,1)
Because
If x>1
then
the width is negative (W=2-2x)
so
The maximum is the point (0.46,3.02)
see the attached figure
therefore
The value of x that maximizes the volume enclosed by this box is 0.46 inches
The maximum volume is 3.02 cubic inches
Answer:
Improper fraction: 39/34
Proper fraction: 1 5/34
Decimal: 1.147 (rounded to the nearest thousandths).
Step-by-step explanation:
Solve each expression given, if it has the same result, then the expressions is equivalent. Solve the given expression:
4 7/8 ÷ 4 1/4
First, change all fractions into improper fractions:
4 7/8 = (4 * 8)/8 + 7/8 = 32/8 + 7/8 = 39/8
4 1/4 = (4 * 4)/4 + 1/4 = 16/4 + 1/4 = 17/4
Next, find common denominators. Note that what you do to the denominator, you must do the numerator:
(17/4) * (2/2) = (34/8)
39/8 ÷ 17/4
Solve. First, change the division sign into multiplication, and then flip the second fraction:
39/8 ÷ 17/4 = 39/8 x 4/17
Multiply straight across:
39/8 x 4/17 = (39 x 4)/(8 x 17) = 156/136 = 39/34 (simplified), or 1 5/34.
~
Answer:
896
Step-by-step explanation:
14 of 20 teens eats breakfast every morning.
The percentage of those who eat breakfast every morning
= 14/20 x 100%
= 0.7 x 100%
= 70%
So, 70% of 20 teens eat breakfast every morning.
The reasonable prediction for the number of teens that eats breakfast every morning from 1280 teens will be 70% of 1280.
70/100 x 1280
0.7 x 1280
896
The prediction would be 896 out of 1280 teens eats breakfast every morning
Answer: 4 units to the right, 3 units up
Hope this helped! :)