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
cestrela7 [59]
3 years ago
15

I need help on this problem ​

Mathematics
1 answer:
AlladinOne [14]3 years ago
4 0

Answer:

y² - 2y - 4x + 9 = 0 (*)

a = 1    b = -2    c = -4x + 9

Δ = b² - 4ac = 4 - 4(9 - 4x) = 4 - 36 + 16x = 16x - 32

if (*) have the solutions => Δ ≥ 0

⇔ 16x - 32 ≥ 0 ⇔ x ≥ 2

with x ≥ 2 => y = \frac{2+\sqrt{16x-32} }{2}=\frac{2+4\sqrt{x-2} }{2}=1+2\sqrt{x-2}

or y = 1-2\sqrt{x-2}

Step-by-step explanation:

You might be interested in
It took Lesley the same time to drive 150 miles as it took a train to travel 250 miles. If the train is traveling 20 mph faster
Slav-nsk [51]

Answer:

12.5 and 7.5

Step-by-step explanation:

4 0
3 years ago
Work out the size angles x,y and z​
Andreas93 [3]

Answer:

x = y = 14

z = 70

Step-by-step explanation:

As we can see from the markings, x = y

So we have an isosceles triangle in ABD

the sum of angles in a triangle is 180

52 + x + y = 180

x + y = 180-52

x + y = 28

so since x = y

x = y = 14

To get z, we have that;

52 + z + 14 + 44 = 180

z + 110 = 180

z = 180-110

z = 70

3 0
2 years ago
9+a=23 need to solve this problem​
Pavel [41]

Answer:

a = 14

Step-by-step explanation:

Given

9 + a = 23 ( subtract 9 from both sides )

a = 14

4 0
3 years ago
Read 2 more answers
Jamie Earns 10% commission on her sales after she has sold a minimum of $2000 each month for the lippy cosmetics company, last m
Licemer1 [7]
I'm sorry but I do not understand your question. It is not specified what you are looking for.
7 0
3 years ago
Solve the problem. The formula d = rt gives the distance traveled in time t at rate r. If a bicyclist rides for 2.3 hours and tr
scZoUnD [109]
<span>C. 17.83 miles per hour
Instead of using D=R*T use D/T=R
D=41
T=2.3
41/2.3=17.83</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • Altogether, Tim, Laura, and Eric worked 210 hours campaigning for their friend Jake who was running for the senate. Laura worked
    7·1 answer
  • I need help with the one talking about 14 7/8!! (aka the one that says F.)
    9·1 answer
  • Write an English phrase that would translate into the following mathematical expression. 7z-4
    8·1 answer
  • Describe the graph of
    12·1 answer
  • Which point is not a solution to the system of inequalities?<br> Thank you:)))
    10·1 answer
  • According to an article in Marketing News, fewer checks are being written at the grocery store checkout than in the past. To det
    6·1 answer
  • 15v − -14v − -14 = -15 solve for v ps..... help plz
    5·1 answer
  • (3x + 8)
    14·1 answer
  • Which matrix represents the system of equations shown below? 3x-5y=12 4x-2y=15
    13·1 answer
  • what is the volume of the rectangular prisms with a length of 1 5/8, a width of 3/8, and a height of 3in
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!