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
allochka39001 [22]
3 years ago
6

If the coefficient a in the general quadratic equation is equal to 9, what is the focal length for the

Mathematics
1 answer:
lutik1710 [3]3 years ago
5 0

Answer:

9

Step-by-step explanation:

Let the equation of a parabola be

y^{2} = 4ax.

Then , focal length of the parabola is a.

As , (0,0) is the vertex and its focus is (a,0)

Thus, focal length comes out to be a.

Here,

a is given as 9 units .

Thus focal length of the parabola, d, equals to 9 units

You might be interested in
Given f(x)=7(9−x)−4, what is the value of f(−1) ?<br><br> Enter the answer in the box.
NeX [460]

Solution:

f(x) = 7(9 - x) - 4

f(-1) = 7(9 - (-1)) - 4

f(-1) = 7(10) - 4

f(-1) = 70 - 4

f(-1) = 66

Best of Luck~

4 0
3 years ago
Read 2 more answers
In a family with four children, what is the probabaility that 3 are girls and one is a boy
valkas [14]
If we write all the possible combinations for this problem, 4/16 or 1/4 would be the answer.

BGGG
GBGG
GGBG
GGGB

This is not taking into consideration the specific order of the children. In case the order will be necessary, the Girls need to be labeled differently and permutation formula needs to be used.
4 0
2 years ago
According to company records, 128 of 460 employees purchase health insurance through the company. The chief human resources offi
Doss [256]

Answer:

\dfrac{128}{460}\times 100 \approx \bold{27.83\%}

Step-by-step explanation:

Given that:

Number of employees who purchased health insurance through the company = 128

Total number of employees = 460

To find:

Expression to find out the percentage of employees that purchase health insurance through the company ?

Solution:

Percentage of employees that purchase health insurance through the company:

\dfrac{\text{Number of employees that purchase health insurance through the company}}{\text{Total number of employees}}\times 100

= \dfrac{128}{460}\times 100 \approx \bold{27.83\%}

4 0
3 years ago
B<br> 4<br> 10<br> b = ✓ [?]<br> Pythagorean Theorem: a2 + b2 = c2
MrRissso [65]
Download the app photo math
4 0
2 years ago
Proportion word problem.....One jar of crushed ginger costs $2. How many jars can you buy with $4?
Vanyuwa [196]
If each jar cost $2 and you have $4 you can buy 2 jars!
3 0
2 years ago
Read 2 more answers
Other questions:
  • This is due today can you please help me with these coordinates fast!!!!
    5·2 answers
  • Plz help me I dont understand
    12·1 answer
  • If you could help me with this it would be greatly appreciated!
    8·2 answers
  • Solve for an angle in right triangles help
    15·2 answers
  • How to know where the ( ) go in a math problem
    10·2 answers
  • No real numbers are irrational numbers
    11·2 answers
  • Increase £50 by 60% anyone can help me?
    11·1 answer
  • N+3/8=-4<br> What is n?<br> Plz help I don't understand this math
    14·2 answers
  • GIVING BRAINLIEST AND 59 POINTS PLSSS help with all 1. Which number in the image above indicates
    15·1 answer
  • Anita, Byron, Carlos, and Dominique buy a gift for their grandmother. They split the cost equally and each pay $14. 62. Which eq
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!