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
grin007 [14]
3 years ago
12

Please help me I will give you brainliest

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
3 0

ok here you go its B

You might be interested in
Question 7 of 10
Mama L [17]

Answer:

B

Step-by-step explanation:

Given a quadratic equation in standard form

ax² + bx + c = 0 ( a ≠ 0 )

Then the discriminant is

Δ = b² - 4ac

• If b² - 4ac > 0 then 2 real irrational roots

• If b² - 4ac > 0 and a perfect square then 2 real rational roots

• If b² - 4ac = 0 then 1 real double root

• If b² - 4ac < 0 then 2 complex roots

Given

x² + 3x - 7 = 0 ← in standard form

with a = 1, b = 3, c = - 7 , then

b² - 4ac

= 3² - (4 × 1 × - 7) = 9 + 28 = 37

Since b² - 4ac > 0 then 2 real irrational roots

8 0
3 years ago
Find an equation for the parabola with focus at (-5,-4) and vertex at (-5,-3)
sattari [20]

Answer:

(x+5)^{2}=-4(y+3)

Step-by-step explanation:

Given:

Focus point = (-5, -4)

Vertex point = (-5, -3)

We need to find the equation for the parabola.

Solution:

Since the x-coordinates of the vertex and focus are the same,

so this is a regular vertical parabola, where the x part is squared. Since the vertex is above the focus, this is a right-side down parabola and p is negative.

The vertex of this parabola is at (h, k) and the focus is at (h, k + p). So, directrix is y = k - p.

Substitute y = -4 and k = -3.

-4 = -3+p

p=-4+3

p=-1

So the standard form of the parabola is written as.

(x-h)^{2}=4p(y-k)

Substitute vertex (h, k) = (-5, -3) and p = -1 in the above standard form of the parabola.

So the standard form of the parabola is written as.

(x-(-5))^{2}=4(-1)(y-(-3))

(x+5)^{2}=-4(y+3)

Therefore, equation for the parabola with focus at (-5,-4) and vertex at (-5,-3)

(x+5)^{2}=-4(y+3)

7 0
3 years ago
What is the overall charge of phosphide
Nuetrik [128]

Answer:

negatively charged

Step-by-step explanation:

4 0
2 years ago
Two towns are 480km apart. Two buses start at the same time from these two towns towards one another and they pass each other af
Neporo4naja [7]

Answer:

10number for a is a answer of that question

5 0
3 years ago
I need help can someone please help me (4^3)^5 this will give you 49 points If you help me please
Leno4ka [110]
(4*3)*5
4*3 = 12
(12)5
The answer is 60.
6 0
3 years ago
Read 2 more answers
Other questions:
  • 4 times a number cubed
    14·1 answer
  • I need help with What is 1.8÷2.40
    7·2 answers
  • If I have a 93% as my subject grade and I get an 68% percent on a quiz as a quiz grade, what is my final subject grade.
    12·1 answer
  • 10 1/2 * 10 1/2 simplify
    11·1 answer
  • The graph of f(x)=4/x^2-2x-3 is shown. For which values of x is f(x) decreasing?
    13·2 answers
  • What's your real rate of return if your savings account pays 2.5% interest and
    9·2 answers
  • Please give me the correct answer.Only answer if you're very good at math.Please don't put a link to a website.​
    5·2 answers
  • Four students rode they bikes too school, I need to know who rode the fastest based on the graphs
    5·2 answers
  • The function f(x) = 350 - 125x represents how
    14·2 answers
  • Solve for z<br><br> 15z–19≥–9 or z+13≤6
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!