1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Olin [163]
3 years ago
15

HELP.... please??????????????

Mathematics
1 answer:
Nostrana [21]3 years ago
8 0

Answers:

Functions

  • y = -x+11
  • y = 2x^2-6x+4
  • y = -7

Not functions

  • x = 3
  • x^2+y^2 = 81
  • y^2 = -5x-12

=======================================================

Explanation:

A function is possible if and only if any given x input leads to exactly one y output.

For something like x^2+y^2 = 81, we can see that x = 0 leads to either y = 9 or y = -9. So this would <u>not</u> be a function. We would need x to pair with only y value to have it be a function.

We have the same thing going on with y^2 = -5x-12 as well.

For anything of the form x = k, where k is any real number, this is also not a function. We have one single input only and it leads to infinitely many outputs. So in a sense, this is even worse compared to the other examples.

-----------------

In summary, we have these three non-functions:

  • x = 3
  • x^2+y^2 = 81
  • y^2 = -5x-12

Everything else is a function. You can use the vertical line test as a visual way to check.

You might be interested in
What are the zeros of f(x) = x3 + 6x2 + 3x – 10 ?
schepotkina [342]
One of the zeroes would be : x = 1

f (1)  = 1^3  + 6(1) ^2  + 3 (1)  - 10

f(1) = 1 + 6 + 3 - 10

f (1)  = 10 - 10

f (1) = 0

Hope this helps
3 0
3 years ago
Find the difference of 128.04 - 8.287.
riadik2000 [5.3K]

Answer:


119.753000


.....


4 0
2 years ago
136 is 85% of what number?
Arte-miy333 [17]
X * 0.85 = 136
           x = 136/0.85
           x = 160

hope this helps :)

3 0
3 years ago
Neal opened a savings account 11 years ago with a deposit of $2,335.69. The account has an interest rate of 4.3% compounded dail
Vinvika [58]

Answer: $1,412.52

Step-by-step explanation:

Formula to calculate the accumulated amount if <em>P</em> principal invested for <em>t </em>years at a rate of interest <em>r</em> that compounded daily is given by:-

A=P(1+\dfrac{r}{365})^{365t}

Given: P= $2,335.69

r= 4.3%= 0.043

t= 11 years

Then,

A=2335.69(1+\dfrac{0.043}{365})^{365\times11}\\\\=2335.69(1+0.000117808219178)^{4015}\\\\=2335.69(1.000117808219178)^{4015}\\\\= 2335.69(1.6047566747)\\\\=3748.09044309\approx3748.21\\\\\Rightarrow\ A=\$3748.21

Interest earned = A-P

= $3748.21- 2335.69.

= $1412.52

Hence, Neal earned $1,412.52 as interest.

8 0
2 years ago
If
Arte-miy333 [17]

Answer:ddddd

Step-by-step explanation:

ddddddd

8 0
2 years ago
Other questions:
  • 2(10- 24 × 1/4)+ 8 × 8​
    15·1 answer
  • PLEASE HELP!! #8<br> k(x)=4x-2 on [3, 3+h]
    5·1 answer
  • Julie got 21 of the 23 questions on her math test correct. She got 29 of the 32 questions on her science test correct. On which
    9·2 answers
  • What is the length of a rectangle with width 20 in, and area 172 in2
    13·1 answer
  • Jdiidkndnkdkjdnbbdjjdjdnbdjdjkdjd
    10·2 answers
  • How do i use permutation on 5P3?
    13·1 answer
  • Given a line segment that contains the points A,B, &amp; C in order, if AB = x - 2, and BC = 2x + 6, and AC = 19, find x.
    7·1 answer
  • There were 17 students in the class at the start of the school year. During the year, three pairs of new students transferred in
    14·2 answers
  • HI MY NAMES ARIANNA AND I HAVE 18 MISSING ASSIGNMENTS. CAN ANYONE HELP ME? PLEASE? ILL DO ANYTHING!! IM IN 8TH GRADE SO IT SHOUL
    12·1 answer
  • What is the slope of a line perpendicular to the line with equation y = 5x – 2?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!