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
bekas [8.4K]
3 years ago
7

Solve by quadratic formula: (on your resource page)

Mathematics
1 answer:
gizmo_the_mogwai [7]3 years ago
3 0
A. <span>x=<span><span>​8</span>​<span>​<span>−3+<span>√<span><span>​<span>137/</span></span>​<span>​​</span></span></span></span></span><span>​​</span></span><span><span>​8</span>​<span>​<span>−3−<span>√<span><span>​<span>137</span></span>​<span>​​</span></span></span></span></span><span>​​/8
B.</span></span></span>
<span>x=<span><span>​4</span>​<span>​<span>−7+<span>√<span><span>​<span>97</span></span>​<span>​​</span></span></span></span></span><span>​​</span></span>,<span><span>/4</span>​<span>​<span>,−7−<span>√<span><span>​<span>97/4
hope this helps
</span></span>​<span>​​</span></span></span></span></span><span>​​</span></span></span>
You might be interested in
A sine function has the following key features: Period = 4 Amplitude = 3 Midline: y=−1 y-intercept: (0,-1) The function is not a
mezya [45]

Answer:

  • See the graphs attached and the explanation below

Explanation:

The most simple sine function, considered the parent function, is:

     y=sin(x)

That function has:

  • Midline, also known as rest or equilibrium position: y = 0
  • Minimum: - 1
  • Maximum: 1
  • Amplitude: the distance between a minimum or a maximum and the midline = 1
  • period: the interval of repetition of the function = 2π

The more general sine function is:

             y=Asin(Bx+C)+D

That function has:

  • Midline: y = D (it is a vertical shift from the parent function)
  • Minimum: - A + D
  • Maximum: A + D
  • Amplitude: A
  • period: 2π/B
  • phase shift: C (it is a horizontal shift of the from the parent function)

Now, you have to draw the sine function with the given key features:

  • Period = 4 ⇒ 2π/B = 4 ⇒ B = π/2
  • Amplitude, A = 3
  • midline y = - 1 ⇒ D = - 1
  • y-intercept = (0, -1)

Substitute the know values and use the y-intercept to find C:

       

            y=3sin(2x/\pi+C)-1

Substitute (0, -1)

             

              -1=3sin(0+C)-1\\ \\ 3sin(C)=0\\ \\ sin(C)=0\\ \\ C=0

Hence, the function to graph is:

              y=3sin(\pi x/2)-1

To draw that function use this:

  • Maxima: 3(1) - 1 = 3 - 1 = 2, at x = 1 ± 4n (n = 0, 1, 2, 3, ...)
  • Minima: 3(-1) - 1 = - 3 - 1 = -4
  • y-intercept: (0, - 1)
  • x-intercepts: the solutions to 0 = 3sin(πx/2) = - 1
  • first point of the midline: (0, -1) it is the same y-intercept

With that you can understand the graphs attached.

4 0
3 years ago
What fraction of an hour is 15 minutes?<br> Give your answer in its simplest form.
Salsk061 [2.6K]

Answer:

1/4

Step-by-step explanation:

15/60 = 1/4

8 0
2 years ago
Read 2 more answers
Beth works at a grocery store. She earns $8 per hour for her first 20 hours of work in a week. She earns $11 per hour for workin
aleksandr82 [10.1K]

Answer:

the 2nd graph

*this is my first time answering a question xd*

3 0
3 years ago
The average cost of a bag of popcom at
shepuryov [24]

Answer:

B 26.3% increase

Step-by-step explanation:

1 - 3.50/4.75 = .263 = 26.3%

7 0
3 years ago
Find the value of x. Round to the nearest whole number.
IrinaVladis [17]

Use trigonometry.

sin x = opposite ÷ hypotenuse

sin x = 7/9

Take the arcsin on both sides.

arcsin(sin x) = arcsin(7/9)

x = 51.057558731

Rounding to the nearest whole number means to round to the ones place.

Answer: x = 51 degrees

5 0
3 years ago
Other questions:
  • HELP 30 POINTS WILL GIVE BRAINLIEST
    15·1 answer
  • DEL
    13·2 answers
  • Elias's teacher has given him a rectangle that is 15 feet by 20 feet. She has asked him to create a new rectangle using a scale
    12·2 answers
  • Whats 45.678 in epanded form
    13·1 answer
  • A salesperson at a jewelry store earns 6% commission each week. Last week, he
    11·1 answer
  • Is this table Proportional or Non-proportional?
    11·2 answers
  • In​ 2009, a diabetic express company charged ​$38.85 for a vial of type A insulin and ​$30.34 for a vial of type B insulin. If a
    5·1 answer
  • Solve for x.........
    6·1 answer
  • A line with slope 6.5 and y-intercept (0,-8)​
    15·1 answer
  • Si tengo un monto de 3000.00 con una taza anual de 6% cuanto me geraria en 3 meses
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!