What are the x-intercepts of the quadratic function?y = –x2 + 2x – 1
(Points : 1) A. 2 and 1 B. –2 and 1 C. 2 and –1 D. 1

Answers

Answer 1

Answer: $y=-x^2+2x-1=-(x^2-2x+1)=-(x-1)^2\ \ \Rightarrow\ \ y \leq 0\n \nC.\ x=2\ \ \Rightarrow\ \ \ y=-(2-1)^2=-1\ \ \Rightarrow\ \ (2;-1)\n \nAns.\ C$

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Is the relation a function? {(14, 15), (5, 7), (3, 10), (11, 1), (5, 8)} a. yes. b. no

Answers

In this relation we have two ordered pairs:
( 5, 7 ) and ( 5, 8 )
For x = 5 : f ( x ) = 7 and also for x = 5, f ( x ) = 8. This is not possible for a function.
Answer:
b ) No. The relation is not a function.

Answer:

B. no

The whole test

1. C

2. A

3. B

4. C

5. A

6. A

Hope this helps the ballers!

Step-by-step explanation:

How do I apply the change of base formula to y=log (sub 3) x

Answers

$y=\log_3x \Leftrightarrow y=(\log_cx)/(\log_c3)\text{ where } c\in \mathbb{R}_+\setminus\{1\}$

(Quick please ) !!!!!!!!!!!!!!!! Help me!!!!! find the surface area of the rectangular prism!!!!!! thank you

Answers

You can do this !

The rectangular prism has

   -- length = 10 cm
   -- width = 7 cm
   -- height = 3 cm.

-- The area of the top and bottom is (length x width) each.

-- The area of the left and right sides is (length x height) each.

-- The area of the front and back is (width x height) each.

There. I just laid out all the schmartz you need to answer this question.
The rest is all simple arithmetic, and you're perfectly capable of turning
the crank and getting the answer. You don't need anybody else to do
that part for you.

Don't forget your units. The area of each flat face is (cm) times (cm),
and that product will be some cm² , for area.

8 points on this WUESTIONNNNNNNNNN

Answers

Answer:

x=30

Step-by-step explanation:

2 times 1/2(x+6)=18 times 2

x+6=36

x+6-6=36-6

x=30

whomever is reporting me please stop(echo2155)

Answer:

Step-by-step explanation:

First you have to perform distributive property which is

2((x+6)=18) 2

Which will turn to

X+6=36

Then move the constant to the right so

X=36-6 then calculate

So the answer is 30

The value of x is 30

Show how to find the product of 16.2*4 using addition

Answers

16.2 x 4 = 16.2 + 16.2 + 16.2 + 16.2 = 64.8

16.2 + 16.2 +16.2 +16.2 = 64.8

Ten slips of paper labeled from 1 to 5 are placed in a hat. The first slip of paper is not replaced before selecting the second slip of paper.What is the probability of selecting a number less than 3 then a number greater than 4?

3/50

1/15

3/100

1/10