Answer:13
Step-by-step explanation: this is the awnser.
Answer:
$66.85
Step-by-step explanation:
One box equals $9.55.
There are seven boxes, so multiply the $9.55 by 7 to get your answer:
7 × 9.55 = 66.85.
Debra spent $66.85 for all seven boxes of chocolates.
<span> When you want to find sin^-1 (pi/3) what you're asking is to find some x such that sin x = pi/3. Now note that pi/3 = 1.0472. So you want to find x such that sin x = 1.0472. But -1 <= sin x <= 1, this is the range of the sine function. So there is no value of x for which sin x = 1.0472. </span>
Answer:
<h2><em>V(x) =</em> <em>
4x³ - 72x² + 308x</em></h2>
Step-by-step explanation:
<em>Look at the picture</em>.
The formula of a volume of a rectangular prism is:
<em>V = lwh</em>
<em>l</em> - length
<em>w</em><em> - width</em>
<em>h</em><em> - height</em>
We have
<em>l = 22 - 2x, w = 14 - 2x, h = x</em>
Substitute:
<em>V = (22 - 2x)(14 - 2x)(x)</em><em> use FOIL: (a + b)(c + d) = ac + d + bc + bd</em>
<em>V = [(22)(14) + (22)(-2x) + (-2x)(14) + (-2x)(-2x)](x)</em>
<em>V = (308 - 44x - 28x + 4x²)(x)</em> <em>combine like terms</em>
<em>V = (4x² - 72x + 308)(x) </em><em>use the distributive property a(b + c) = ab + ac</em>
<em>V = (4x²)(x) + (-72x)(x) + (308)(x)</em>
<em>V = 4x³ - 72x² + 308x</em>