2) Find the missing digit for the following bank identification numbers:

Mathematics

1 answer:

Elza [17]3 years ago

8 0

Answer:

i donno

Step-by-step explanation:

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(50 points for best and correct answer ASAP no steps needed) A family is building a rectangular fountain in the backyard. The ya

Pie

Answer:

A) 34x²

Step-by-step explanation:

6x * 7x = 42x²

2x * 4x = 8x²

42x - 8 x = 34x²

5 0

3 years ago

A parabolic listening device is shaped such that the depth of the bowl depends on its radius and can be represented by the curve

faltersainse [42]

Answer:

$\large \boxed{\text{7.428 in}}$

Step-by-step explanation:

$\begin{array}{rcl}D & = & 0.145 r^{2}\\8 & = & 0.145 r^{2}\\55.17 & = & r^{2}\\r & = & \sqrt{55.17}\\& = & \textbf{7.428 in}\\\end{array}\\\text{The radius is $\large \boxed{\textbf{7.428 in}}$ when the depth is 8 in.}$

The graph shows the profile of your parabolic listening device,

7 0

4 years ago

Read 2 more answers

Sin(5x)sin(3x)

LekaFEV [45]

$\bf \textit{Product to Sum Identities} \\\\ sin(\alpha)sin(\beta)=\cfrac{1}{2}[cos(\alpha-\beta)\quad -\quad cos(\alpha+\beta)]\qquad \leftarrow \textit{we'll use this one} \\\\\\ cos(\alpha)cos(\beta)=\cfrac{1}{2}[cos(\alpha-\beta)\quad +\quad cos(\alpha+\beta)] \\\\\\ sin(\alpha)cos(\beta)=\cfrac{1}{2}[sin(\alpha+\beta)\quad +\quad sin(\alpha-\beta)]$

$\bf cos(\alpha)sin(\beta)=\cfrac{1}{2}[sin(\alpha+\beta)\quad -\quad sin(\alpha-\beta)] \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ sin(5x)sin(3x)\implies \cfrac{cos(5x-3x)-cos(5x+3x)}{2}\implies \cfrac{cos(2x)-cos(8x)}{2}$