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3 years ago

How many minutes does it take for mai to run half of the track

Mathematics

1 answer:

Tems11 [23]3 years ago

4 0

Answer:

3.25

Step-by-step explanation:

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The diagram below shows scalene triangle JKL.

spin [16.1K]

The answers are A. and B.

Step-by-step explanation: I just took the test and it was right ; )

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3 years ago

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Scientifc notaion of 33

svlad2 [7]

3.3x10^1
I'm not exactly sure that it's the same as standard form but if it is then that's your answer

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3 years ago

Graph f(x) =-2x^+16x-30 by factoring to find the solutions, then find the coordinates of the vertex, and the axis of symmetry. I

fredd [130]

Answer:

Observe attached image

Function zeros:

(3, 0), (5, 0)

Vertex:

(4, 2)

Axis of symmetry:

 $x =4$ 

Step-by-step explanation:

First factorize the function

$f (x) = -2x ^ 2 + 16x-30$

Take -2 as a common factor.

$-2(x ^ 2 -8x +15)$

Now factor the expression $x ^ 2 -8x +15$

You must find two numbers that when you add them, obtain the result -8 and multiplying those numbers results in 15.

These numbers are -5 and -3

Then we can factor the expression in the following way:

$f (x) = -2(x-5)(x-3)$

The quadratic function cuts the x-axis at x = 3 and at x = 5.

Now we find the coordinates of the vertex.

For a function of the form $ax ^ 2 + bx + c$ the x coordinate of its vertex is:

$x = \frac{-b}{2a}$

In the function $f (x) = -2x ^ 2 + 16x-30$

$a = -2\\b = 16\\c = 30$

Then the vertice is:

$x = \frac{-16}{2(-2)}\\\\x = 4$

The y coordinate of the symmetry axis is

$y = f (4) = -2 (4) ^ 2 +16 (4) -30\\\\y = 2$

The axis of symmetry is a vertical line that cuts the parabola in two equal halves. This axis of symmetry always passes through the vertex.

Then the axis of symmetry is the line

$x = 4$

The solutions and the vertice written as ordered pairs are:

Function zeros:

(3, 0), (5, 0)

Vertex:

(4, 2)

6 0

3 years ago

What is the equivalent ratio of 82:36?

Tom [10]

41:18

82 / 2 = 41

36 / 2 = 18

I hope this helps.

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3 years ago

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A company had net cash flows from operations of $120,000, cash flows from financing of $330,000, total cash flows if $500,000 an

AlexFokin [52]

450,500 because 120,000 and 330,000 and 500 thats the answer

5 0

3 years ago