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2 years ago

14

WILL GIVE BRAINLIEST

2 answers:

Allushta [10]2 years ago

8 0

Answer:

Step-by-step explanation:

(-2)(1)(3)(-1) - (1)(3)(-1)(-2)

6 - 6 = 0

Stels [109]2 years ago

8 0

Answer:

0

Step-by-step explanation:

(-2)(1)(3)(-1) - (1)(3)(-1)(-2)

6 - 6 = 0

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At an ocean depth of 8 meters, a buoy bobs up and then down 5 meters from the ocean's depth. Sixteen seconds pass from the time

lisov135 [29]

Answer:

See attached for a graph

Step-by-step explanation:

We're going to plot sea level as y=0 and a depth of 8 meters as y=-8.

The problem statement tells you the initial point (x=0) is at normal ocean depth (y=-8), so the first point you put into your sine tool is ...

(x, y) = (0, -8)

The buoy takes 16 seconds to go from a high point to a low point, so the time to the first high point is half that, or x=8 seconds. That high point is 5 meters above its average depth, so is at y=-3.

The second point you will put into your sine tool is ...

(x, y) = (8, -3)

7 0

2 years ago

In an origami class, the instructor tells the students to cut a square that has an area of 24 square inches. Kevin cuts a square

rodikova [14]

The answer is
The side length of the square Kevin cuts is slightly less than the length the instructor required

7 0

3 years ago

Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations. (-4, 9), (0,

Tresset [83]

Answer:

$\boxed{y=2x^2+4x-7}$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

We substitute $(-4,9)$ into the equation to obtain;

$9=a(-4)^2+b(-4)+c$

$\Rightarrow 9=16a-4b+c---(1)$

We substitute $(0,-7)$ to obtain;

$-7=a(0)^2+b(0)^2+c$

$\Rightarrow c=-7---(2)$

We finally substitute $(1,-1)$ to obtain;

$-1=a(1)^2+b(1)^2+c$

$\Rightarrow -1=a+b+c---(3)$

We put equation (2) into equation (1) to get;

$9=16a-4b-7$

$16a-4b=16$

$\Rightarrow 4a-b=4---(4)$

$\Rightarrow -1=a+b-7$

$\Rightarrow a+b=6---(5)$

We add equation (4) and (5) to get;

$4a+a=6+4$

$\Rightarrow 5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation (5) to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The reqiured quadratic function is

$y=2x^2+4x-7$

7 0

2 years ago

Find the slope of the line passing through the pair of given points.<br> (5, 7) and (2,7)

gulaghasi [49]

Answer:

m = 0

Step-by-step explanation:

$m = \frac{7 - 7}{5 -2} \\m = \frac{0}{3}\\m = 0$

8 0

3 years ago

Why is looking at cash flow an important step in a good financial plan?

sergejj [24]

Cuz it can help you later on in the fuchure

8 0

3 years ago