PLEASE HELP !!!! I DONT KNOW WHAT TO DO!!!!!

Answer:

-21

Step-by-step explanation:

Given the sum of the first n term as;

Sn = 2 - 7n^2

The nth term is expressed as;

Tn = Sn - Sn-1

Sn-1 = 2 - 7(n-1)^2

Tn = 2 - 7n^2 - (2 - 7(n-1)^2)

Tn = -7n^2 + 7(n-1)^2

To get the second term, we will substitute n = 2 into the resulting expression

T2 = -7(2)^2 + 7(2-1)^2

T2 = -7(4)+7(1)^2

T2 = -28 + 7

T2 = -21

Hence the second term of the sequence is -21

Answer:

12

Step-by-step explanation:

Let's put the equations in standard form. For the first equation, we have:

−11y=6(z+1)-13y

2y−6z=6

y−3z=3

The second equation is:

4y−24=c(z−1)

4y−cz=24−c

If we multiply the first equation by 4, we get:

4y-12z=12

Comparing the two equations, we see that if c=12, both equations will be the same and there will be infinitely many solutions.

The correct value of c is 12.

Answer:

5 stickers per page

Step-by-step explanation:

20/4 = 5

5 stickers per page Step-by-step explanation: just multiply 20 by 4

Answer:A

Step-by-step explanation:

The exponential decay functions are y = 2(2/5)ˣ and y = 2(4/3)ˣ

An exponential function's curve is created by a pattern of data called exponential decay, which exhibits higher decreases over time.

The exponential decay function:

Aₙ = A₀(1-r)ˣ, where y = Final amount, A₀ = Initial amount, r = Rate of decay in decimal form, x = Time.

We know,

The exponential decay function:

Aₙ = A₀(1-r)ˣ, where y = Final amount, A₀ = Initial amount, r = Rate of decay in decimal form, x = Time.

And to find the y-intercept,

Substitute the value of x = 0 and solve for y.

Then y =2.

The functions are y = 2(2/5)ˣ and y = 2(4/3)ˣ

Therefore, the function are y = 2(2/5)ˣ and y = 2(4/3)ˣ.

To learn more about the exponential decay;

https://brainly.com/question/14344314

#SPJ2

Answer:

yeah the graph does match the equation

Answer:

Yes because the y intercept is at -1 like the equation and also can I have brainliest.

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

4n + 2 and n = 3

4(3) + 2 = 12 + 2

12 + 2 = 14

Answer:

D. It is not possible to draw a conclusion

Step-by-step explanation:

we are not given enough information about the library schedule.

Answer:

live laugh love

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

(0,-4) (-4, -3)

-3- -4 / -4 -0 = 1/-4 is the slope

so is C

Answer:

The answer is B.

Step-by-step explanation:

slope-intercept form is y=mx + b with m being slope and b being y-intercept. slope is change in y over change in x, and in this situation the change in y is 1 and the change in x is 4. so, slope = 1/4. so now our equation is y=1/4x+b. now we have to find the y-intercept, which in this graph is -4. so, the equation is y=1/4x+-4. Hope this helps!

Answer:

See explanation

Step-by-step explanation:

Recall that all the sides of the square are equal

Hence;

Area of a rectangle= l * b ------- equation 1

Perimeter of a rectangle = 2(l + b)----------equation 2

Area of the rectangle = 140 square centimeters

140 = lb

l = 140/b

Perimeter of the rectangle =  54 centimeters

substituting l = 140/b into equation 2

54 = 2(140/b + b)

Multiplying through by b

54b = 280 + 2b^2

Hence;

2b^2 - 54b + 280 = 0

Solving the quadratic equation

b=20 or b=7

substituting b=20 or b=7 into l = 140/b

l = 140/20 or l = 140/7

l = 7 or 20

THEREFORE;

b=20 cm or b=7 cm

l = 7cm or 20cm

Answer:

4

Step-by-step explanation:

slope is rise/run, rise is 4, while run is 1.

4/1=4, you'd write the slope as 4x in an equation, not sure if you're supposed to write it as 4 if it's just asking for the slope.

Answer:

The distance is 20

Step-by-step explanation:

Answer:

Step-by-step explanation:

(a) Your $160 is correct.

(b) No, this is not a proportional relationship, because the graph does not go through the origin.  That, in turn, is because there is a fixed, up-front cost of $120.

(c) The total cost as a function of the number of months, m, is

TC(m) = $120 + ($40/month)m

Answer:

1.70

Step-by-step explanation:

15.30 ÷ 9 = 1.70

1.70 dollars per chicken wing

I hope this helps

Answer:

The value of b is either + 6 or -6

Step-by-step explanation:

Here, given that we have the value for the discriminant, we want to calculate the value for the coefficient of x

mathematically, the discriminant can be calculated using the equation;

D = b^2 - 4ac

a represents the coefficient of x^2 which is 3

b represents the coefficient of x given as b

2 represents the last number

D is the discriminant = 12

So we have that;

12 = b^2 - 4(3)(2)

12 = b^2 - 24

b^2 = 24 + 12

b^2 = 36

b = √36

b = +6 or -6

Answer:

a^4b^3/2

Step-by-step explanation:

Answer:

the simplify version is a^16 b^3

Answer:

A) [tex]x = -12[/tex]

B) [tex]y = - 1[/tex]

Step-by-step explanation:

Answer:  the first one is -12 and the second one is 4

Answer:

144

Step-by-step explanation:

Please comment if you need an explanation :D

Answer:

Bro u need to shu.t up all ready

Step-by-step explanation:

Answer:

MMEEEE but im SOOO behinnnd

Step-by-step explanation:

Answer:

Not me sorry.

Step-by-step explanation:

Answer:

-4

Step-by-step explanation:

We plug in the variables to get (3-4)(3+1)=(-1)(4)=-4

Answer:

-4

Step-by-step explanation:

(3 - 4) (3 + 1)

(-1) (4)

(-4)

hope this helps!!

Answer:

The correct answer is 64.6%

Step-by-step explanation:

95 student total are taking a math class out of 147 kids. 95/147 = 0.646, carry the decible and you get your percentage which is 64.6%

Answer:  x < 3

Step-by-step explanation:

3x+4   < 13

     3x < 9                  (Subtracted 4 from both side)

       x  < 3                  (Divide by 3 from both side)