Please Help Marking Brainiest

Answer:

4

Step-by-step explanation:

I saw karma so i came as fast as I could- welp anyways

Lets test the first equation and coordinate #1 first, 3x-2y=12, and (10,9).

Here we can substitute x as 10 and y as 9, and solve the equation to see if 3(10)-2(9) equals 12 or not.

30-18=12, yep

now lets test the second coordinate, (0, -6). Substitute x as 0 and y as -6, and solve the equation.

3(0)-2(-6)=12

0+12=12, yep

So I definitely works

For II, lets do the same thing

(10, 9) -- 9=3/2*10-6

9=15-6, works

(0, -6) — -6= 3/2*0-6

-6=0-6, also works

So uh therefore I and II both work you see what I mean-

i apologize in advance if i made you more confused than you already are-

Answer:

38

Step-by-step explanation:

9514 1404 393

Answer:

Step-by-step explanation:

Each term is the previous term with the current term number added. The 5th term will be 5 + (4th term) = 5 + 10 = 15.

The next term is 15.

_____

The sequence of triangular numbers is given by the explicit formula ...

   an = n(n+1)/2

__

Finding the Formula

The sequence of first differences is ...

  3 -1 = 2

  6 -3 = 3

  10 -6 = 4

And the sequence of second differences is ...

  3 -2 = 1

  4 -3 = 1

These are constant, indicating the sequence is described by a polynomial function of 2nd degree.

There are several ways to find the coefficients of the quadratic function. One is to solve for them using a system of equations.

n = 1

  a1 = 1 = a(1)^2 +b(1) + c

n = 2

  a2 = 3 = a(2)^2 + b(2) +c

n = 3

  a3 = 6 = a(3)^2 +b(3) +c

To solve, we can subtract each equation from the next:

  a2 -a1 = (3) -(1) = a(4 -1) +b(2 -1) +c(1 -1)

  2 = 3a +b

and

  a3 -a2 = (6) -(3) = a(9 -4) +b(3 -2) +c(1 -1)

  3 = 5a +b

Now we can subtract the first of these equation from the second:

  (3) -(2) = a(5 -3) +b(1 -1)   ⇒   1 = 2a   ⇒   a = 1/2

Then ...

  2 = 3(1/2) +b

  1/2 = b

  1 = a + b + c   ⇒   1 = 1/2 + 1/2 + c   ⇒   c = 0

So, the quadratic function describing the sequence of triangular numbers is ...

  an = (1/2)(n^2 +n)

  an = n(n+1)/2

Answer:

-6n-5=31

Step-by-step explanation:

-6n=36

n=36/-6

n=(-6)

Answer:

Solve the equation. Type your answer in the box as positive or negative whole number (Examples: 2 -4 6 -8)

Step-by-step explanation:

Hey if u see this CORTEZ ARI KIRITO GUYS MY ACC GOT DELETED TEXT ME BACK PLZPLZPLZZZ

Answer:

20

Step-by-step explanation:

Answer:

80°

Step-by-step explanation:

angles 1 and 2 are called 'vertical' angles and are congruent

Answer:

D

Step-by-step explanation: the answer is d because the other half without the equations is = to 180 which is a semi circle. This means that the other half must be 180 too because a circle is 360. I did trial and error and plugged in all the numbers.

Hope I could help!

Answer:

option D .35

Step-by-step explanation:

2x+3x+5=180 linear pair

5x=180-5

x=175/5=35

Answer:

the first one for sure.

Step-by-step explanation:

Answer:

455666

124

Step-by-step explanation:

9514 1404 393

Answer:

  14.2 years

Step-by-step explanation:

The value is described by the exponential function ...

  y = (initial value)·(decay factor)^x

where y is the value after x years.

The decay factor is (1 - annual depreciation) = 1 - 0.0925 = 0.9075, so we want to find x when ...

  6000 = 23900·0.9075^x

  6000/23900 = 0.9075^x . . . . . . . . . . . . . . divide by 23900

  log(6000/23900) = x·log(0.9075) . . . . . . . take logarithms

  x = log(6000/23900)/log(0.9075) ≈ 14.2396

It will be about 14.2 years until the value of the car is $6000.

Answer:

14.2

Step-by-step explanation:

Answer:

2.5

Step-by-step explanation:

We know that they are similar and that the length of the long side is 3 + 3, which is 6. 6 = 3 times 2, meaning that all values in the big triangle are double the little triangle. That means that 2x = 5, meaning that x = 2.5.

Answer:

If only the fittest survive in certain enviorments other animals have to evolve to live in different places

Step-by-step explanation:

THIS IS NOT A SAMPLE RESPONSE:

Natural selection can lead to evolution by some organism evolving into something to were they dont get hunted as much by a characteristic they evolved with.

it worked for me good luck hope it helps!

Answer:

55

Step-by-step explanation:

since b is 110, you will have to divide 110 by 2 to find out the answer of c because its a half of b and that leaves you with 55, also a is 55 two

c=55

a=55

d=30

Answer:

∠C = 110°

Step-by-step explanation:

the figure is a kite so a line from B to D would bisect those angles and for a triangle that contains a total of 180°.

180° - 1/2(110° + 30°) = 180° - 1/2(140°) = 180° - 70° = 110°

Answer:

Approximately 7853.98

Step-by-step explanation:

The formula to finding the area of a circle based on radius is [tex]\pi r^2\\[/tex], where r is radius. Hope this helped :D

Answer:frfr it made hard

Step-by-step explanation:

Answer:3x+6=2x+21 base angle of isosceles triangle

3x-2x=21-6

X=15

<J=3×15+6=51

<k=2×15+21=51

,<I=180-51-51=78

Step-by-step explanation:

Answer:

Adding 12 to the circle area is equal to the square area.

Or

s2 = 12 + A

Where

s = side of square

A = area of circle

So

s2 = 12 + 36

s2 = 48

Solve this for s to get the side length

wait, what does to of an inch mean?

Answer:

7

Step-by-step explanation:

[tex](tangent)^{2}[/tex] = AC × CB

 [tex]12^{2}[/tex] = ( x + 9 ) 9

 144 = 9x + 81

 9x = 144 - 81

 9x = 63

 x = 63 ÷ 9

 x = 7

Answer:

the answer is x= 8, y= 0

Answer:p=28 and q=4(7)

Step-by-step explanation:

p=28 and q=4(7)

Answer:

From left to right:

x=-9

x=-23

x=24

x=8

x=-9

x=-28

Step-by-step explanation:

63/-7=-9

-15-8=-23

12*2=24

-4*-2=8

-20+11=-9

-7*4=-28

-7x=63 answer is -9

x + 8=-15 answer is -7

1/2x=12 answer is 24

x/-2= -4 answer is 8

x-11=-20 answer is -9

1/4x=-7 answer is -28

Answer:

New price is $30.6

Step-by-step explanation:

10% of 34 is 3.4

34 - 3.4 = 30.6

Answer:

[tex]L + 2K = 200[/tex]

Step-by-step explanation:

Given

[tex]E=1000[/tex] --- Expenditure

[tex]L=200[/tex] --- Labor

[tex]K = 100[/tex] --- Capital

Required

Determine the budget line

First, we calculate the units of labor

[tex]U_1 = \frac{E}{L}[/tex]

[tex]U_1 = \frac{1000}{200}[/tex]

[tex]U_1 = 5[/tex]

Next, the units of capital

[tex]U_2 = \frac{E}{K}[/tex]

[tex]U_2 = \frac{1000}{100}[/tex]

[tex]U_2 = 10[/tex]

The budget line equation is:

[tex]U_1 * L + U_2 * K = E[/tex]

At this point, we take L and K as variables.

So, the equation becomes

[tex]5* L + 10* K = 1000[/tex]

[tex]5 L + 10K = 1000[/tex]

Divide through by 5

[tex]L + 2K = 200[/tex] -- Budget line equation

Answer:

C. 64

Hope that helps you

The value of the angle x is calculated as: ∠x = 64

Let the intersect of line SV and RT be Y

Sides RTU forms a triangle, and the sum of the interior angles of a triangle is 180.

Since RT = TU, ∠TRU  = ∠TUR = z

114 + z + z = 180

114 + 2z = 180

2z = 180 - 114

2z = 66

z = 66/2

z = 33

Line STU is a straight line and the angle of a straight line is 180. Thus:

114 + ∠STR  = 180

∠STR = 180 - 114

∠STR = 66

Also, sides SYT is forms a triangle and the sum of all interior angles of a triangle is 180. Thus:

66 + 31 + ∠SYT = 180

97 + ∠SYT = 180

∠SYT = 180 - 97

∠SYT = 83

But ∠SYT = angle RYV = 83

sides RYV form a triangle and the sum of all interior angles of a triangle is 180

33 + 83 + ∠x = 180

116 +  ∠x = 180

∠x = 180 - 116

∠x = 64

Read more about Missing Angle at: https://brainly.com/question/28293784

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Answer:

0.2

Step-by-step explanation:

1 divided by 5

2/5=0.4

3/5=0.6

4/5=0.8

5/5=1

Answer:

im happy to help but what are the options?

Step-by-step explanation:

Step-by-step explanation:

here's your solution

=> total number of student = 575

=> let the number of boys be x

=> then the number of girls = x + 54

=> a/q , x + x + 54 = 575

=>.2x + 54 = 575

=>. 2x = 575 - 54

=> 2x = 521

=> x = 521/2

=> x = 260.5

=> number of girls = 260.5+ 54.

=> 314.5