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3 years ago

NEED HELP !!!!! Pasbmsbsjshdvssndbns

Mathematics

2 answers:

Firlakuza [10]3 years ago

3 0

Answer:

Wouldn't it be 4.9 cm since its probably adding them together

RSB [31]3 years ago

3 0

Answer:

d = 4.9cm

Step-by-step explanation:

add 1.7cm and 3.2 cm

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2 years ago

James and Sarah went out to lunch. The price of lunch for both of them was $60. They tipped their server 10% of that amount.

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2 years ago

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The system shown has the unique solution (2, y, z). Solve the system and select the values that complete the solution. y = 0 y =

madreJ [45]

So we are given a system:
$3x-2y+3z=0\\
-3x - 5y - 5z= -21$
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$-2y+3z=-6\\
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Multiply the first equation by -5 and the second by 2 we get the system:
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$-25z=0\text{ then}z=0.$
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3 years ago

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Quadratics need help making parabola

timama [110]

Answer:

The equation of the parabola is $y = \frac{1}{3}\cdot x^{2}-\frac{4}{3}\cdot x -4$ , whose real vertex is $(x,y) = (2, -5.333)$ , not $(x,y) = (2, -5)$ .

Step-by-step explanation:

A parabola is a second order polynomial. By Fundamental Theorem of Algebra we know that a second order polynomial can be formed when three distinct points are known. From statement we have the following information:

$(x_{1}, y_{1}) = (-2, 0)$ , $(x_{2}, y_{2}) = (6, 0)$ , $(x_{3}, y_{3}) = (0, -4)$

From definition of second order polynomial and the three points described above, we have the following system of linear equations:

$4\cdot a -2\cdot b + c = 0$ (1)

$36\cdot a + 6\cdot b + c = 0$ (2)

$c = -4$ (3)

The solution of this system is: $a = \frac{1}{3}$ , $b = - \frac{4}{3}$ , $c = -4$ . Hence, the equation of the parabola is $y = \frac{1}{3}\cdot x^{2}-\frac{4}{3}\cdot x -4$ . Lastly, we must check if $(x,y) = (2, -5)$ belongs to the function. If we know that $x = 2$ , then the value of $y$ is: