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
elena-s [515]
3 years ago
10

Number 1 A to D and number 2 A to C....?

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0
A polynomial function is something that is in the form ax^n+bx^(n-1)...+c. For (a), we see that 4x^3 is the highest power of x, so everything after it must be to the power of an integer less than 3 and more than -1. Since -3x^2 is to the power of 2, that works. Since 2 is 2x^0, that works too (since anything to the power of 0 is 1)

For (b), we get that .4x^3 is, again, to the highest power in this expression. However, sqrt(x) is x to the power of 1/2, which is not an integer and therefore making it not a polynomial function.

I challenge you to do c and d on your own using what I said!

For 2, we have f(3)=2 and f(4)=7. That means that we have the coordinates (3,2) and (4,7). Since the equation is y=mx+b, m(the slope) is found by 
(x1-x2)/(y1-y2), x is the first number is the point, so 3 and 4 are both x values. Y values are the second number. (3-4)/(2-7)=-1/-5=1/5, which is the slope, making our equation y=(1/5)x+b. Since y and x must always stay that way (in the final equation) we just need to find b. To find it, we can plug in 3 and 2 for x and y respectively, getting 2=(1/5)*3+b=0.6+b. Subtracting 0.6 from both sides, we get b=1.4, making the equation y=(1/5)*x+1.4.

I challenge you to do B and C on your own using what I said!
You might be interested in
6. Find the equation of the line perpendicular to y=2 through (1,5). * A. y 2 B.X D.X=2 耕​
Maru [420]

Answer:

Step-by-step explanation:

To convert the measurements of metric system into another units of metric system we have to either multiply it by 10, 100, 1000, 10000, 100000, etc or divide by 10, 100, 1000, 10000, 100000, etc.

If we have to convert bigger unit into smaller unit then we have to multiply the unit by the multiples of 10, then the decimal point is shifted to right by 1 or 2 or 3 or 4 , etc. places.

For example, 1.2 kg is converted into g so we have to multiply it by 1000, so decimal point is shifted to right by 3 places, i.e.,

1.2 x 1000 = 1200 g

If we have to convert smaller unit into bigger unit then we have to divide the unit by the multiples of 10, then the decimal point is shifted to left by 1 or 2 or 3 or 4 , etc. places.

For example, 12 cm is converted into m so we have to divide it by 100, so decimal point is shifted to left by 2 places, i.e.,

12 / 100 = 0.12 m  

7 0
3 years ago
PLEASE HELP! REWARDING BRAINLIEST
TEA [102]
X+2y=2 …(1)
x-2y=-2…(2)

(1)-(2): (x+2y)-(x-2y)=2- (-2)
4y=4
y=1

subs y=1 into(1)
x+2(1) =2
x=0

so x =0 y=1
the answer is C
7 0
3 years ago
Aplumber charges a $75 flat fee for jobs lasting up to an hour and $30 for each hour of labor after the first hour. Which
tamaranim1 [39]
<h3><u>Answer</u>:- </h3>

\longrightarrow \sf 75+ 30(h-1)

<h3><u>Solution:-</u></h3>

<u>Given </u><u>that </u><u>:</u><u>-</u>

  • job last for h hours
  • Cost of job lasting more than 1 hour = $30
  • Cost for the first hour = $75

\leadstoRemaining hours for which the job will last after first hour= (h-1)

<u>Therefore</u>,

Cost for subsequent hours = 30×(h-1)

= 30(h-1)

Total Cost for job = Cost for 1st hour + Cost for subsequent hours

\quad\quad\quad\quad\quad\quad\quad\quad\boxed{\sf{= 75+30(h-1)}}

7 0
2 years ago
Erica solved the equation −5x − 25 = 78; her work is shown below. Identify the error and where it was made.
Romashka-Z-Leto [24]
In step one, you are supposed to add 25 to both sides, because if you just subtract, it would be -5x-50=53
8 0
3 years ago
On a coordinate grid, both point (−4, −1) and (2, 6) point are reflected across the y-axis. What are the coordinates of the refl
vichka [17]
The reflected points are (4, -1) and (-2, 6).
4 0
3 years ago
Other questions:
  • What is 6+7×y add 10 more
    14·1 answer
  • Insurance companies track life expectancy information to assist in determining the cost of life insurance policies. AIB Insuranc
    7·1 answer
  • Plsssssssssssssssssssssssssssssss help
    10·1 answer
  • to stay healthy joe knows that it is recommended that a person on a 2000 calorie per day diet consume no more than 65 grams of f
    7·1 answer
  • Which is the graph of f(x) = (x – 1)(x + 4)?
    5·2 answers
  • Explain how to find the surface area of rectangular prisms and cubes. What formulas can you use?
    14·2 answers
  • 5. Which of the following is an
    12·1 answer
  • Cassandra needs 5 1/2 yards of fabric to make her dress. she has 3 5/6 yards already. how much more does she need? Plz give expl
    14·1 answer
  • What is the solution to this system of linear equations?
    12·1 answer
  • Which of the following is true about the area of a triangle with side lengths that measure 6 units, 8 units, and 10 units?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!