Ask question

Ask question

All categories

3 years ago

5

An investor bought 600 shares of stock, some at $⁢4.50 per share and some at $⁢1.00 per share. If the total cost was $1650.00 ,

how many shares of each stock did the investor buy?

1 answer:

olya-2409 [2.1K]3 years ago

5 0

Dont mid helping
23 hope help

You might be interested in

For which values of the parameter B the following system admits a unique solution [ 1 b 1-b 2 2 0 2–2B 4 0] [x y z] = [1 2 0]

photoshop1234 [79]

Answer: β ≠ ±1

Step-by-step explanation: For a system of equations to have an unique solution, its determinant must be different from 0: det |A| ≠ 0. So,

det $\left[\begin{array}{ccc}1&\beta&1-\beta\\2&2&0\\2-2\beta&4&0\end{array}\right]$ ≠ 0

Determinant of a 3x3 matrix is calculated by:

det $\left[\begin{array}{ccc}1&\beta&1-\beta\\2&2&0\\2-2\beta&4&0\end{array}\right]\left[\begin{array}{ccc}1&\beta\\2&2\\2-2\beta&4\end{array}\right]$

$8(1-\beta)-[2(2-2\beta)(1-\beta)]$

$8-8\beta-4+8\beta-4\beta^{2}$

$-4\beta^{2}+4\neq 0$

$\beta^{2}\neq 1$

$\beta \neq \sqrt{1}$

β ≠ ±1

For the system to have only one solution, β ≠ 1 or β ≠ -1.

7 0

3 years ago

If x = 3, then x^2 = 3x what property

atroni [7]

X=3
(3)^2=3(3)
9=9
true

8 0

3 years ago

9. What is the tan(90-x)?

Aleonysh [2.5K]

$\\ \sf\longmapsto tanx=\dfrac{Perpendicular}{Base}$

$\\ \sf\longmapsto tanx=\dfrac{4}{3}$

$\\ \sf\longmapsto x=tan^{-1}(4/3)$

$\\ \sf\longmapsto x=53°$

$\\ \sf\longmapsto tan(90-x)$

$\\ \sf\longmapsto cotx$

$\\ \sf\longmapsto cot53$

$\\ \sf\longmapsto \dfrac{3}{4}$

$\\ \sf\longmapsto 0.75$

6 0

2 years ago

Read 2 more answers

Mary has 6 shells. Her friend Tina has 3 times more than Mary. How many shells do the girls have together?

Mamont248 [21]

18 shells because since Mary has 6 and Tina has 3 shells all you have to do is multiply 6 and 3 to get 18

8 0

3 years ago

Read 2 more answers

Determine the area based on the house plan.<br><br><br><br><br> Kitchen area:

ArbitrLikvidat [17]

Answer:

66 or 32

Step-by-step explanation:

5+3+4+3+5+4+2+3+4= Hope it helps!!1

5 0

3 years ago

Read 2 more answers