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kipiarov [429]
3 years ago
8

The table below shows the scores that Amy and Bria have earned in their math class this quarter. Tests are worth 45%, quizzes ar

e worth 30%, homework is worth 15%, and the project is worth 10% of their quarter grade. Show how you can use matrix multiplication to determine what each student's quarter grade will be? ​

Mathematics
1 answer:
GREYUIT [131]3 years ago
3 0

Answer:50%

Step-by-step explanation:

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Write the equation of the circle with center (7,-2) and radius square root 61. Please show your work!
Vladimir79 [104]
The equation of a circle is (x - h)^2 + (y - k)^2 = r^2
x and y are left alone in a circle equation, while h and k are the coordinates of the center.

Thus, our equation is (x - 7)^2 + (y + 2)^2 = 61
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3 years ago
-2 ⅝ * (4 ⅓)=<br><br><br> plzz help
Whitepunk [10]

Answer:

Step-by-step explanation:

Change into improper fraction

-2\frac{5}{8}*4\frac{1}{3}=\frac{-21}{8}*\frac{13}{3}\\\\   = \frac{-7}{8}*\frac{13}{1}\\\\=\frac{-91}{8}\\\\=-11\frac{3}{8}

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3 years ago
Anyone please help me I have several questions?!!!!
Natali [406]

Answer:

depends what are  they

Step-by-step explanation:

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2 years ago
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Someone please help I will make you as brainliest!!!!
solniwko [45]
Here's infinity minus 1.
\dfrac{6}{0}(7+8)^{9}\cdot 5-1

If you don't like that, here's 1,153,300,781,250.
\dfrac{6}{1}(7+8)^{9}\cdot 5-0


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Please note that according to the order of operations, the only denominator value is the first box after "÷".
3 0
3 years ago
I NEED HELP PLEASE! Anyone?...
makvit [3.9K]
To find the quadratic of the form ax^2+bx+c=y set up a system of equations with the points provided...

a+b+c=4, 0a+0b+c=3, a-b+c=-6  getting differences:

a+b=1, -a+b=9  and getting difference again:

2a=-8, so a=-4, making a+b=1 become:

-4+b=1, so b=5, making a+b+c=4 become:

-4+5+c=4, so c=3

thus the quadratic that produces those three points is:

y=-4x^2+5x+3

...

The vertex occurs when the velocity is equal to zero, the derivative of the quadratic...

dy/dx=-8x+5, dy/dx=0 when x=5/8=0.625

Then you can find y(5/8)=4.5625

So the vertex is (0.625, 4.5625)

Or you may wish to remember that the vertex will always be:

(-b/(2a), (4ac-b^2)/(4a))  (this can be derived from conservation of energy under constant acceleration or the vertex form of the quadratic)

The axis of symmetry will be the vertical line about the x-coordinate of the vertex, in this case:

x=0.625
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3 years ago
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