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
Mrrafil [7]
3 years ago
5

Quadratic inverse for y=x^2-1

Mathematics
1 answer:
stepan [7]3 years ago
8 0

let's recall that to find the inverse of any expression, we start off by doing a quick switcheroo on the variables, and then solve for "y".

\bf y = x^2-1\implies \stackrel{switcheroo}{x=y^2-1}\implies x+1=y^2\implies \sqrt{x+1}=\stackrel{f^{-1}(x)}{y}

You might be interested in
Suppose y varies inversely with x. Write an equation if y=7 when x=-4
luda_lava [24]

Answer:

y = -28 ÷ x

Step-by-step explanation:

The standard format of a inversely proportional equation goes by the format of y = k ÷ x. The question asks us to write an equation if y = 7 when x = -4 and y varies inversely with x.

So we substitute the values y = 7 and x = -4 in the equation y = k ÷ x

K = constant, we have to work this out

7 = k ÷ -4

7 × - 4 = k

k = - 4 × 7

k = -28

k = -28 So then we put this back into the original y = k ÷ x to find our final equation which is y = -28 ÷ x

3 0
3 years ago
The ratio of the number of boys to the number of girls in a certain school club is 3 to 4. If there are 5 more girls than boys i
andreev551 [17]

Answer:

so 4 times 5 is 20 girls

your answer is 20

Step-by-step explanation:

you have to do cross math so 3 over 4 times 5 over? so

3 0
3 years ago
Read 2 more answers
Which angle number represents <EHK
kotegsom [21]
Angle #8 represents angle EHK
4 0
3 years ago
A. 3.9<br><br> B. 1.0<br><br> C. 1.7<br><br> D 3.3
amm1812

Answer:

its for sure C

Step-by-step explanation:

4 0
3 years ago
A pole-vaulter uses a 15-foot-long pile. She grips the pole so that the segment below her left hand is twice the length of the s
Shalnov [3]
Let x + 1.5 be length of segment above left hand
Let 2x be length of segment below left hand

15 = x + 1.5 + 2x
15 = 3x + 1.5
15 - 1.5 = 3x
13.5 = 3x
13.5/3= 3x/3 
4.5 = x
x = 4.5
This is the length above the left hand. 

2x must be then 4.5*2 = 9 foot
This is the length below the left hand. 

Checking
4.5 + 9 + 1.5 = 15 foot 

Adding length below left hand & length of left hand to right hand:
9 + 1.5 = 10.5
The right hand is hence 10.5 foot far up the pole.
6 0
3 years ago
Other questions:
  • In ΔTUV, t = 6.6 inches, ∠U=71° and ∠V=36°. Find the length of u, to the nearest 10th of an inch.
    7·1 answer
  • How many significant figures does the number 546.000 have
    10·1 answer
  • If you are a student with no assets of any value and have liability insurance on an old car that pays a
    8·1 answer
  • A boat travels x miles per hour upstream on the Mississippi River. On the return trip, the boat travels 2 miles per hour faster.
    10·1 answer
  • The winner of a race ran the distance in 45s at an average speed of 9.6 m/s. The runner who came in last finished and 48 seconds
    10·1 answer
  • Write the equation of the line yhat is perpendicular to 5x+8y=16 and passes through (-5,7)
    6·1 answer
  • Miguel is purchasing 2.25 pounds of oatmeal. The serving suggestion is 0.2 pounds. It costs $0.79 per pound. How many servings w
    7·2 answers
  • Find the rate of change on the graph​
    8·2 answers
  • A school newspaper says that 6% of the students surveyed, can wiggle their ears. How many students were surveyed ? If a school h
    11·1 answer
  • What is it the following a perfect square A49 B121 C75 D64​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!