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
Brrunno [24]
2 years ago
14

If y = x2 + x -1, find y if x = 3. y =

Mathematics
2 answers:
marishachu [46]2 years ago
8 0

Answer:

y=3

Step-by-step explanation:

y = 3x2 + 3x-1

y = 6 + -3

y = 3

Sati [7]2 years ago
6 0

Answer:

y=8

Step-by-step explanation:

y=2x+x-1

replace x with 3

y=2(3)+(3-1)

y=6+2

y=8

You might be interested in
Any tips on how to do this?? i have no clue how
Black_prince [1.1K]

Answer:

6.7

Step-by-step explanation:

For this questions we have the oppsotie side and need the adjacent

out of SOH, CAH, TOA we will sue TOA

tan(56)=10/x

tan(56)/10=1/x

10/tan(56)=x

x=6.745 which rounds to 6.7

8 0
3 years ago
in pennsylvania the percent of sales tax is 6%, what is the sales tax on a skateboard that costs $98?
Stells [14]

Answer:

$103.88

Step-by-step explanation:

$98 + 6% is 103.88.

6 0
3 years ago
A college survey was taken to determine where students study. Of 110 students surveyed, 64 studied
Serhud [2]

Answer:

12

Step-by-step explanation:

64+52=118 studied in the cafeteria or lounge

but 20 studied in both, so 118-20 = 98 studied there in total

110 -98 = 12

8 0
3 years ago
Algebra 2 question need help.​
MrMuchimi

Answer: Choice C

h(x) = -x^4 + 2x^3 + 3x^2 + 4x + 5

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

Explanation:

When reflecting the function f(x) over the y axis, we replace every x with -x and simplify like so

f(x) = -x^4 - 2x^3 + 3x^2 - 4x + 5

f(-x) = -(-x)^4 - 2(-x)^3 + 3(-x)^2 - 4(-x) + 5

f(-x) = -x^4 + 2x^3 + 3x^2 + 4x + 5

h(x) = -x^4 + 2x^3 + 3x^2 + 4x + 5

Note the sign changes that occur for the terms that have odd exponents (the terms -2x^3 and -4x become +2x^3 and +4x); while the even exponent terms keep the same sign.

The reason why we replace every x with -x is because of the examples mentioned below

-----------

Examples:

The point (1,2) moves to (-1,2) after a y axis reflection

Similarly, (-5,7) moves to (5,7) after a y axis reflection.

As you can see, the y coordinate stays the same but the x coordinate flips in sign from negative to positive or vice versa. This is the direct reason for the replacement of every x with -x.

4 0
3 years ago
Which table represents a function that does not have a constant rate of change ?
EleoNora [17]

Answer:

I believe D.

Step-by-step explanation:

All the other tables increase at a stady rate but D doesn't.

4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELP ME IM BAD AT THIS EVEN THOUGH ITS REALLY EASY! SO YOU PROBABLY COULD DO IT!
    11·1 answer
  • NEED HELP PLEASE!!!!!! Jeremy surveyed students in his class about their spending habits in the school cafeteria. He used the da
    14·2 answers
  • Find the possible value or values of n in the quadratic equation 2n^2-7n+6=0.
    15·1 answer
  • Flat screen tv cost $1,400 the tv is on sale 35% off what is the discounted price on the tv
    8·2 answers
  • You have a 12 inch by 14 inch picture that you frame. When you hung the picture, you found that the entire area is 261.44 in. Wh
    10·1 answer
  • The two largest lizards in the United States are the Gila monster and the chuckwalla. The average Gila monster is 0.608 meter lo
    11·1 answer
  • Find the slope of <br> -2y-10+2x=0
    14·2 answers
  • How do I solve system of equations elimination method ​
    13·1 answer
  • The width is 5.2 cm and the area is 54.6 cm?
    7·1 answer
  • The graph represents the fees in thousands of dollars, y, depending on the amount invested in millions, x, with one financial in
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!