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
julia-pushkina [17]
3 years ago
10

Hi. I need help with these questions. See image for question. Please answer no 10 and 11

Mathematics
1 answer:
Tanya [424]3 years ago
3 0

9514 1404 393

Answer:

  10. (x, y) = (-3/8, 2 9/16)

  11. k = -1

Step-by-step explanation:

10. The value of x at the vertex is ...

  x = -b/(2a)

  x = -(-3)/(2(-4)) = -3/8

The corresponding value of y is ...

  y = 2 +(-3/8)(-3 +(-3/8)(-4)) = 2 +(-3/8)(-3/2) = 2 +(9/16)

The vertex is (x, y) = (-3/8, 2 9/16).

__

11. The discriminant is zero when the roots are equal.

  b² -4ac = 0

  (k-1)² -4(1)(-k) = 0

  k² -2k +1 +4k = 0

  k² +2k +1 = 0 . . . . . collect terms

  (k +1)² = 0 . . . . . . . . write as a square

  k = -1 . . . . . . . . . . . . the value of k that satisfies

<em>Check</em>

  x² -2x +1 = (x -1)² = 0 . . . . has equal roots: x=1.

You might be interested in
Find the y value for the point that spilts GH in half if point G is laocated at (-3, 5) and point H is located at (0, -2).
kiruha [24]

Answer:

y value: 1.5

Step-by-step explanation:


3 0
3 years ago
I WILL GIVE BRAINLY! PLEASE HELP!
marysya [2.9K]

Answer:

he expression is undefined where the denominator equals

0

, the argument of an even indexed radical is less than

0

, or the argument of a logarithm is less than or equal to

0

.

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Step-by-step explanation:

5 0
3 years ago
HELP ME PLS stock worth $60 a share dropped in value by 20% on Monday. Then it dropped again by 10$ the next Tuesday. And finall
fgiga [73]

Answer:

58.90

Step-by-step explanation:

3 0
2 years ago
Can someone please help me
Ainat [17]

Answer:

20

Step-by-step explanation:

If the two triangles are similar, then corresponding sides must share a constant ratio. This means that:

\dfrac{10}{6}=\dfrac{25}{15}=\dfrac{x}{12}

Let's use the second ratio:

\dfrac{25}{15}=\dfrac{x}{12}

Multiply both sides by 12:

\dfrac{25\cdot 12}{15}=x \\\\x=20

Hope this helps!

5 0
3 years ago
Jesse is looking for the volume of the cone below, and she is using the formula V=(1/3)Bh. Which of the following is the value o
Sidana [21]

Answer:

B =  \pi *r^2

(Base of the cone)

Step-by-step explanation:

The volume of the cone is always 1/3 of the volume of a cylinder with the same radius and height.

Volume of the cylinder

V_cylin = ( \pi *r^2 )* h

Where

r is the radius

h is the height

This means the volume of the cone is equal to

V_cone = (1/3)* ( \pi *r^2 )* h

By looking to the equation of the problem

V=(1/3)Bh

We can easily deduce that

B =  \pi *r^2

(Base of the cone)

6 0
3 years ago
Other questions:
  • Someone explain how to do this
    12·2 answers
  • You called Ticket Taker for local team football tickets. The tickets cost $94 and you will be charged a processing fee of 5%. Ho
    13·2 answers
  • Helppppp PLEASE please please
    14·1 answer
  • 2.) Fill in the blank.
    5·1 answer
  • Find the vertex and the axis of symmetry of the graph of the function?
    12·1 answer
  • Find CD<br> CD = [? ]<br><br> please help??
    5·2 answers
  • Determine whether 42 is divisible by 2,3,5,and/or 10
    15·2 answers
  • X / 12 equals 27 / 33 ​
    11·1 answer
  • Find the missing values
    14·1 answer
  • Whould anyone mind helping please. The first box says 6.25x+12x=30.75 the second box says 6.25x+12=30.75 3rd box says 6.25x+30.7
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!