Y=-x^2+20x-64 what is the axis of symmetry

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

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Solve rational inequality x²+x-6/x²-3x-4≤0?

How do you do this math Question

Answers

remember
a/b time b/a=1
and
a/b times b=a

and when working with inequalities (> < > <)
flip the sign when dividding or multiplying by a negative number
so < becomes >, > becomes <

(3/5)e>9
multiply both sides by 5/3
e>45/3
e>15

x/-6>5
multiply both sides by -6 don't forget to flip sign
x<-30

The number of chips of different colors in Amy's bag is shown below: 8 blue chips 9 pink chips 1 white chip Amy takes out a chip from the bag randomly without looking. She replaces the chip and then takes out another chip from the bag. What is the probability that Amy takes out a pink chip in both draws?

Answers

probability of an event happening = number of ways it can happen
total number of outcomes

Given:
blue chips = 8
pink chips = 9
white chips=1
total = 18

1st draw:
pink chip = 9/18 = 1/2

2nd draw:
pink chip = 9/18 = 1/2

Answer:

81/324

Step-by-step explanation:

9/18 * 9/18 = 81/324

The distance from the center of a computer disc to the edge of the disc is 6 centimeters. What is the area of the compact disc? A. 113.04 B. 18.84 C. 36 D. 452.16

Answers

c es equal to 36 because that shape make a square

The answer to your question is #36

1. Which of the following represents a function? x -2 -1 0 -1 -2
y 2 3 4 5 6

x 1 1 0 2 2
y 1 2 3 4 5

x 1 2 3 4 5
y 2 2 3 3 4

x 1 1 1 1 1
y 2 3 4 5 6

2. What is the domain of the function: {(2, 1); (4, 2); (6, 3); (8, 4)}?
{1, 2, 3, 4}
{1, 2, 3, 4, 6, 8}
{2, 4, 6, 8}
{6, 8}

3. What is the range of the function: {(2, 1); (4, 2); (6, 3); (8, 4)}?
{1, 2, 3, 4}
{1, 2, 3, 4, 6, 8}
{2, 4, 6, 8}
{6, 8}

4. Suppose p varies directly with d, and p = 7 when d = 3. What is the value of d when p = 28?
4/3
12
16
140/3

5. Given the function T(z) = 7 − z, find T(−4).
−11
11
−3
3
6. What is the equation of the graph?

f(x) = − |x| + 2
f(x) = − |x| − 2
f(x) = − |x + 2|
f(x) = − |x − 2|
7. The number of calories burned, C, varies directly with the time spent exercising, t. When Dennis walks for 4 hours, he burns 800 calories. Which of the following equations shows this direct linear variation?
C = t
C = 800t
C = 4t
C = 200t

Answers

$1.\n\#1\ not\ because\ for\ x=-2\to y=2\ and\ y=6\n\#2\ not\ because\ for\ x=1\to y=1\ and\ y=2\n\#3\ \boxed{IT'S\ OK}\leftarrow answer\n\#4\ not\ because\ for\ x=1\to y=2\ and\ y=3\ and...$

$2.\ (x;\ y)\to x\in D-domain\n\ntherefore:\n\n\{(2;1);\ (4;2);\ (6;\ 3);\ (8;\ 4)\}\n\n\boxed{The\ domain\ D=\{2;\ 4;\ 6;\ 8\}}$

$3.\ (x;\ y)\to y\in Range\n\n\{(2;\ 1);\ (4;\ 2);\ (6;\ 3);\ (8;\ 4)\}\n\n\boxed{the\ range:\{1;\ 2;\ 3;\ 4\}}$

$4.\n(p)/(d)=constans\n\n(28)/(d)=(7)/(3)\ \ \ \ |cross\ multiply\n\n7\cdot d=3\cdot28\ \ \ \ |divide\ both\ sides\ by\ 7\n\nd=(84)/(7)\n\n\boxed{d=12}$

$5.\ T(z)=7-z\n\nT(-4)\to z=-4\n\nput\ the\ value\ of\ z\ to\ (7-z):\n\nT(-4)=7-(-4)=7+4=\boxed{11}$

$6.\ny=|x|\to\ the\ axis\ of\ symmetry\ is\ OY\ (S_(OY))\n\ny=-|x|\to\ the\ axis\ of\ symmetry\ is\ OX\ (S_(OX))\n\nso....\ the\ y-intercept\ is\ (0;\ 2),\ therefore\ answer\ is\ \boxed{f(x)=-|x|+2}$

$7.\n\begin{array}{ccc}C&-&t\n800&-&4\end{array}\ \ \ \ |cross\ multiply\n\n4C=800t\ \ \ \ \ |divide\ both\ sides\ by\ 4\n\n\boxed{C=200t}$

1. 3rd one, because for each x there's only one y.

2. The domain are x's, so it's {2, 4, 6, 8}

3. The range are y's, so it's {1, 2, 3, 4}

4.
$p=kd\n7=3k\nk=(7)/(3)\np=(7)/(3)d\nd=(3)/(7)p\nd=(3)/(7)\cdot28=12$

5. $T(-4)=7-(-4)=7+4=11$

6. $f(x) = - |x| + 2$

7.
$C=kt\n800=4k\nk=200\nC=200t$

What does a persuasive visual designed to make an argument refer to a. visual rhetoric b. logos c. pathos

Answers

a) Visual Rhetoric. Logos means creating a symbol for some fixed thing. Pathos is related to evoking pity or sadness. Both these are clearly can't be the answer. Visual Rhetoric means using visual images to communicate meaning. This includes using visual design to make an argument. So this should be the answer.

A. Visual Rhetoric.

Visual Rhetoric is the study of the persuasive use of images to communicate or promote an idea (or in the case of advertising, a product) to an audience.

Round the answer to the nearest cent.

A 30% discount on $47.50 is $

Answers

Let's find out how much is the 30% discount to 47.50 dollars.
=> 30% = 30% /100 = .30
Now, multiply this decimal to the given amount in dollars.
=> 47.50 dollars * .30 = 14.25 dollars
Thus the 30% discount of 47.50 dollars is 14.25 dollars.

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