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
Elanso [62]
2 years ago
11

Can someone please help mee (20 points and i will give brainliest!!!)

Mathematics
1 answer:
dedylja [7]2 years ago
4 0

Answer:

Step-by-step explanation:

You might be interested in
Is negative 2 n 13/16 greater, or less than or equal to negative 2 11/14???
Kazeer [188]
-2 \frac{13}{16} \ \textless \  -2\frac{11}{14}
8 0
2 years ago
HELP!!
leonid [27]

Answer:

The focus point is (2 , 0) ⇒ answer D

Step-by-step explanation:

* Lets revise the equation of the parabola in standard form

- The standard form is (x - h)² = 4p(y - k)

- The focus is (h, k + p)

- The directrix is y = k - p

- If the parabola is rotated so that its vertex is (h , k) and its axis of

 symmetry is parallel to the x-axis, it has an equation of

 (y - k)² = 4p(x - h)

- The focus is (h + p, k)

- The directrix is x = h - p

* Lets solve the problem

∵ The equation of the parabola is y = 1/8(x² - 4x - 12)

- Lets make x² - 4x completing square

∵ √x² = x  

∴ The 1st term in the bracket is x

∵ 4x ÷ 2 = 2x

∴ The product of the 1st term and the 2nd term is 2x

∵ The 1st term is x

∴ the second term = 2x ÷ x = 2

∴ The bracket is (x - 2)²

∵  (x - 2)² = (x² - 4x + 4)

∴ To complete the square add 4 to the bracket and subtract 4 out  

  the bracket to keep the equation as it

∴ (x² - 4x + 4) - 4 = (x - 2)² - 4

- Lets put the equation after making the completing square

∴ y = 1/8 [(x - 2)² - 4 - 12]

∴ y = 1/8 [(x - 2)² - 16] ⇒ multiply both sides by 8

∴ 8y = (x - 2)² - 16 ⇒ add 16 to both sides

∴ 8y + 16 = (x - 2)² ⇒ take from the left side 8 as a common factor

∴ 8(y + 2) = (x - 2)²

∴ The standard form of the equation of the parabola is

   (x - 2)² = 8(y + 2)

∵ The standard form of the equation is (x - h)² = 4p(y - k)

∴ h = 2 , k = -2 , 4p = 8

∵ The focus is (h , k + p)

∵ h = 2

∵ 4p = 8 ⇒ divide both sides by 4

∴ p = 2

∴ The focus = (2 , -2 + 2) = (2 , 0)

* The focus point is (2 , 0)

6 0
3 years ago
∠ R and∠ S are complementary. If m ∠ R = 12x - 3 and m ∠ S = 7x - 2, find m ∠ R.
Paha777 [63]

Step-by-step explanation:

<h2>Sum of two complementary angle is 90°</h2><h2 /><h2>so. </h2><h2><R+<S =90°</h2><h2>12x-3+7x-2=90°</h2><h2>19x-5=90°</h2><h2>19x=95°</h2><h2>X= 5</h2>

<h2><R= 60-3=57°</h2>
3 0
3 years ago
Situation D: Suppose that, in a one-minute period during an electrical storm, the number of lightning strikes on a radar antenna
Crank

Answer:

21.77% probability that the antenna will be struck exactly once during this time period.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

In which

x is the number of sucesses

e = 2.71828 is the Euler number

\mu is the mean in the given interval.

In this question:

\mu = 2.40

Find the probability that the antenna will be struck exactly once during this time period.

This is P(X = 1).

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

P(X = 1) = \frac{e^{-2.40}*2.40^{1}}{(1)!} = 0.2177

21.77% probability that the antenna will be struck exactly once during this time period.

3 0
3 years ago
Every weekday, Tasha walks 3/8 mile to go to school. After school, she walks 2/8 mile to go to her grandparents' house. Then she
fenix001 [56]

There are two possibilities, and we don't know which situation is true.

<em>#1).</em>  School is in the middle, between home and grandparents. 

Home --------- 3/8 ----------- School --------- 2/8 ------- Grandparents .

If this is true, then in the whole day, Tasha walks

(3/8 + 2/8 + 2/8 + 3/8) = 10/8  =  <u>1.25 miles</u> .

===========================================

<em>#2):</em>  Grandparents house is in the middle, between home and school.
Tasha passes by them on her way to school, and stops there to visit
on her way back home.

Home ------- 1/8 ------- Grandparents ---------- 2/8 ---------- School

If this is true, then in the whole day, Tasha walks

   (3/8 + 2/8 + 1/8) = 6/8  =  <u>3/4 mile</u> .


5 0
2 years ago
Read 2 more answers
Other questions:
  • How do you write 26,373 in scientific notation?
    7·2 answers
  • What's the answer to this??
    9·1 answer
  • Question. 7 Let abc be a three-digit number. Then, abc + bca + cab is not divisible by (a) a + b + c (b) 3 (c) 37 (d) 9
    11·1 answer
  • Mario and Luigi were selling coupon books for the Video game club fundraiser. Apparently, Mario is a much better salesperson, be
    6·1 answer
  • Jessie is saving up for a purse that is $890. She gets $8 allowance per week, and already has $80 saved up. How long will it tak
    9·1 answer
  • The ratio of women to men in a local book club is 7 to 3. Which combination of men and women could the club have
    5·2 answers
  • algebra i accedently clicked da last question but is it right? which one the correct one pls ill love u foreverrr
    7·1 answer
  • 40 pages read in 20 minutes. what is the unit rate?
    13·1 answer
  • Are you a robot cause i think you are
    6·2 answers
  • P:<br> N:<br> L:<br> M:<br><br> Explain what you need to find the equation for each problem.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!