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
Drupady [299]
3 years ago
10

Please help!! i will mark as brainliest

Mathematics
1 answer:
Viktor [21]3 years ago
4 0

Step-by-step explanation:

okay

I think you should use the method of tan 30

and then find x by using pythagorean theorem

You might be interested in
Explain how to find the relationship between two quantities, x and y, in a table. How can you use the relationship to calculate
Morgarella [4.7K]

Explanation:

In general, for arbitrary (x, y) pairs, the problem is called an "interpolation" problem. There are a variety of methods of creating interpolation polynomials, or using other functions (not polynomials) to fit a function to a set of points. Much has been written on this subject. We suspect this general case is not what you're interested in.

__

For the usual sorts of tables we see in algebra problems, the relationships are usually polynomial of low degree (linear, quadratic, cubic), or exponential. There may be scale factors and/or translation involved relative to some parent function. Often, the values of x are evenly spaced, which makes the problem simpler.

<u>Polynomial relations</u>

If the x-values are evenly-spaced. then you can determine the nature of the relationship (of those listed in the previous paragraph) by looking at the differences of y-values.

"First differences" are the differences of y-values corresponding to adjacent sequential x-values. For x = 1, 2, 3, 4 and corresponding y = 3, 6, 11, 18 the "first differences" would be 6-3=3, 11-6=5, and 18-11=7. These first differences are not constant. If they were, they would indicate the relation is linear and could be described by a polynomial of first degree.

"Second differences" are the differences of the first differences. In our example, they are 5-3=2 and 7-5=2. These second differences are constant, indicating the relation can be described by a second-degree polynomial, a quadratic.

In general, if the the N-th differences are constant, the relation can be described by a polynomial of N-th degree.

You can always find the polynomial by using the given values to find its coefficients. In our example, we know the polynomial is a quadratic, so we can write it as ...

  y = ax^2 +bx +c

and we can fill in values of x and y to get three equations in a, b, c:

  3 = a(1^2) +b(1) +c

  6 = a(2^2) +b(2) +c

  11 = a(3^2) +b(3) +c

These can be solved by any of the usual methods to find (a, b, c) = (1, 0, 2), so the relation is ...

   y = x^2 +2

__

<u>Exponential relations</u>

If the first differences have a common ratio, that is an indication the relation is exponential. Again, you can write a general form equation for the relation, then fill in x- and y-values to find the specific coefficients. A form that may work for this is ...

  y = a·b^x +c

"c" will represent the horizontal asymptote of the function. Then the initial value (for x=0) will be a+c. If the y-values have a common ratio, then c=0.

__

<u>Finding missing table values</u>

Once you have found the relation, you use it to find missing table values (or any other values of interest). You do this by filling in the information that you know, then solve for the values you don't know.

Using the above example, if we want to find the y-value that corresponds to x=6, we can put 6 where x is:

  y = x^2 +2

  y = 6^2 +2 = 36 +2 = 38 . . . . (6, 38) is the (x, y) pair

If we want to find the x-value that corresponds to y=27, we can put 27 where y is:

  27 = x^2 +2

  25 = x^2 . . . . subtract 2

  5 = x . . . . . . . take the square root*

_____

* In this example, x = -5 also corresponds to y = 27. In this example, our table uses positive values for x. In other cases, the domain of the relation may include negative values of x. You need to evaluate how the table is constructed to see if that suggests one solution or the other. In this example problem, we have the table ...

  (x, y) = (1, 3), (2, 6), (3, 11), (4, 18), (__, 27), (6, __)

so it seems likely that the first blank (x) will be between 4 and 6, and the second blank (y) will be more than 27.

6 0
3 years ago
Read 2 more answers
The roots of a quadratic equation ax2+bx+c=0 are 1+i 5 and 1−i 5 . Find possible values of a, b and c.
Anarel [89]

Answer:

Step-by-step explanation:

If the roots are 1 + 5i and 1 - 5i, then you need the factors that result from those roots.  They are (x - 1 + 5i) and (x - 1 - 5i).  Now what you do with those is FOIL them out.  Doing that gives you the following:

x^2-x+5ix-x+1-5i-5ix+5i-25i^2 (what a mess, huh?)

The good thing is that several of those terms cancel each other out.  +5ix cancels out the -5ix; -5i cancels out the 5i; and the 2 -x terms combine to -2x.  That leaves you with:

x^2-2x-25i^2

Obviously you're in the section in math that deals with complex (imaginary) numbers so you should know that i-squared is equal to -1.  Making that replacement:

x^2-2x+25

a = 1, b = -2, c = 25

6 0
3 years ago
Read 2 more answers
Will give brainliest if answered *correctly** picture attached
lakkis [162]

Answer:

A, C, E

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
1.     Emily filled an empty horse trough with water. The water level, in centimeters, is proportional to time elapsed, in minut
castortr0y [4]
(a) The rate that the point 8,28 represents is 3.5 cm/s since 28/8 = 3.5
(b) The unit rate is 3.5 cm/s since the rate is constant.
(c) The two points lie on the same line and that both points results to a rate of 3.5 cm/s.<span />
6 0
2 years ago
Hakuna Matata!
geniusboy [140]

Answer: Choke me, like you hate me

But you love me

Lowkey wanna date me

When you f.ck me

Touch me with the lights off, and my chains on

Baby, I'm not the right one you should wait on

She's a freak, lil' bad h-o-e

Gaspare told me kill it, I said lemme grab my death note

She pull me in, like a lasso

Sayin' that she know me, I don't even know her though

Ain't no dad-dy issues, then I won't even bother

She say I kill her cat, like I'm Luka Magnotta

Real bad b.tch, p.ssy bald like Saitama

They used to hate me, now they want me

B.tch, I feel like I'm Gaara

Girl, you f.ckin' with the wrong one

F.ck his team, f.ck your clique, b.tch I'm on one

F.ck your stream, f.ck your clip, you ain't saw one

Got your b.tch on my d.ck, like she want one

Step-by-step explanation: STAN CORPSE HUSBAND 2021

8 0
2 years ago
Read 2 more answers
Other questions:
  • Mathematical definitions must be in ______ language Provide_______ information include only ______ information.
    5·1 answer
  • How many monthly payments must be made for a 2 1/2 year loan?
    9·2 answers
  • State whether - 4-2 and (-4)-2 represent the same quantity. Explain.
    13·1 answer
  • Need Help Please I'm Out Of Time ;(
    5·1 answer
  • horatio climbed to the top of a ladder thst is 10 feet high. which number is the opposite of the number that represents horatios
    9·1 answer
  • The area of the triangle above will equal one half of a rectangle that is 5 units long and units wide. (Input only whole numbers
    14·1 answer
  • Elena needs to cut a square piece of wood with an area of 69 square inches. Approximate how long the sides of the square should
    5·1 answer
  • Find the value of this expression if x=6 and y=5 <br><br> xy/7
    10·1 answer
  • The temperature of a pot of water was 180.3°F and it cooled at a rate of -2.5°F for a minute after 20 minutes what was the tempe
    10·1 answer
  • femi went shopping for a new television. the television he wants to buy measures 32 inches diagonally. the length of the televis
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!