All categories

2 years ago

Which statement is correct?

Mathematics

2 answers:

Alexxx [7]2 years ago

8 0

Answer:

Lin

Step-by-step explanation

(Plz listen to other awnser if right) I need coins plz ignore answer thx

quester [9]2 years ago

3 0

Answer:

Step-by-step explanation:

Petra

You might be interested in

Arithmetic sequence help!!!!

eimsori [14]

1) This is not an arithmetic sequence because it has n².

2) To find 5 first terms of this sequence, you can simply substitute n with 1,2,3,4, and 5, and calculate values of a(1),a(2), a(3), a(4) and a(5).

a(n) = 3n²- 1

n=1 a=3*1² - 1 = 3-1=2

n=2 a=3*2² - 1 = 11

n=3 a=3*3² - 1 =26

n=4 a=3*4² - 1 = 47

n=5 a=3*5² -1 = 74

2,11,26,47,74

Answer C. 2,11,26,47,74.

7 0

3 years ago

Read 2 more answers

What are the roots of the equation 9x^2 + 54x +82 = 0 in simplest a + bi form?

s344n2d4d5 [400]

Answer:

The roots are

Step-by-step explanation:

9x² + 54x + 82 = 0

Using the quadratic formula

That's

From the question

a = 9 , b = 54 , c = 82

Substitute the values into the above formula and solve

That's

Separate the real and imaginary parts

That's

We have the final answer as

Hope this helps you

5 0

2 years ago

In Oregon, the mean annual rainfall in Rockaway Beach is 118.88 inches and the mean annual rainfall in Falls City is 122.28 inch

JulsSmile [24]

Answer:

Step-by-step explanation:

Based on this information, you could conclude that the annual rainfall in Falls City is generally more than that of the annual rainfall in Rockaway Beach. This is based on the information provided since the numbers given are the mean annual rainfall. Meaning that this is the average amount of rain that falls in any given year in that specific location. Since the amount provided for Falls City is a larger number then it means it gets more rainfall than Rockaway Beach on average and would therefore be the safest conclusion that can be made.

5 0

2 years ago

I I i i i i I need Need need need neeed help help help

ki77a [65]

Answer:

the x is 3 and the y is -3

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

marta [7]

Answer:

a) $(x-2)(x-6) + (y-5)(y-11) =0\Rightarrow (x-4)^{2}+(y+3)^{2}=68\\C(4,-3) \:r=\sqrt{68}$ b) (a,b) (c, d) As long as (a,b) and (c,d) are the endpoints of of the diameter.

Step-by-step explanation:

1) The reduced formula of the Circumference is given by:

$(x-a)^{2}}+(y-b)^{2}=r^{2}$

2) Let's expand the factored one into one closer to the pattern above:

$x^{2}-8x+12+y^{2}+6y-55=0\Rightarrow x^{2}-8x+y^{2}+6y=43$

3) Completing the square for both trinomials:

$(x-4)^{2}+(y+3)^{2}=43+16+9\Rightarrow (x-4)^{2}+(y+3)^{2}=68$

4) In the Reduced Formula, $(x-a)^{2}}+(y-b)^{2}=r^{2}$ ,

$C(a,b) \Rightarrow C(4,-3) \:the\:radius\:is\:r=\sqrt{68} \Rightarrow r=2\sqrt{17}$

b) Using the previous example to show this:

When we factor this way

$(x-a)(x -c) + (y -b)(y-d) = 0$

We are indeed, naming "a" and "b", the coordinates of (a, b) of the first endpoint and "b" and "d" the second endpoint as well.Id est, D (2, 5) and B (6,-11).

The radius, is $\sqrt{68} \cong 8.25$

So yes, the equation of the circle can be written as

$(x-a)(x -c) + (y -b)(y-d) = 0$

As long as (a,b) and (c,d) are the endpoints of of the diameter.

$d_{AC}=d_{BC}=R$

3 0

2 years ago