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3 years ago

What year is it and what time it is

Mathematics

2 answers:

mars1129 [50]3 years ago

6 0

2021 And for me 9:12 A.M

r-ruslan [8.4K]3 years ago

3 0

Answer:

It depends on your timezone. But in the U.S., it is Friday, October 29 2021, 9:20 am.

Add-on:

i hope this helped you at all.

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What is the answer to this?

Leya [2.2K]

$\huge\bold\purple{2/3:}$

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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

Translate this sentence into an equation. 64 is the sum of 20 and Carlos's height. Use the variable c to represent Carlos's heig

vaieri [72.5K]

The answer is 64 = 20 + c

5 0

3 years ago

Read 2 more answers

Write the formula of the function f(x) whose graph is shown.

Paha777 [63]

Answer:

horizontal asympote

Y:-4

Step-by-step explanation:

3 0

3 years ago

The average height of 8 adults is 1.8 m. What is the sum of their heights? How do I work this out without a calculator?

Katen [24]

Well, the average of a sum of number is found by adding each given number and dividing that number by the amount of given numbers.
Example: 5+4+3+8=20
and 20/4 = 5, the average of the numbers
Multiply 1.8 by 8.0 using this format:

1.8
x8.0
--------

Hope this helped

5 0

3 years ago