Can someone help me? it’s due in like 10 minutes

Answer:

  -1113

Step-by-step explanation:

You apparently want the sum of the 14-term arithmetic sequence ...

  -21, -30, -39, ..., -138

The average term is ...

  (-21 -138)/2 = -79.5

so the sum of the 14 terms is ...

  (14)(-79.5) = -1113

                                17

                                  Σ (15 – 9n)  = -1113

                                 η = 4

• nth term

                         aₙ = 15 - 9n

        a₄ = 15-9*4 = 15-36= -21

       a₁₇ = 15 - 9(17) = -138

• Sum;

                      S = (a₁ + aₙ)*n/2

         n = 14

         a₁ = a₄= -21

         aₙ = a₁₇ = -138

                   S = (-21 - 138)*14/2

                   S = -1113

Answer: 3.65

Step-by-step explanation:

This question is asking basically what is 50% or 1/2 of 7.3.

Let's expand the number 7.3

Then, we end up getting 7.30.

We have to find 1/2 of 7.30.

of 7.30 =

Hope this helps you!

Answer:

240

Step-by-step explanation:

20 x 12 = 240

Answer:35.7

Step-by-step explanation: subtract the numbers

Answer:

x=-2 hope this helps! :)

Step-by-step explanation:

first you move the constant to the right

3x+1=-5

then you calculate

3x=-5-1

finally you divide both sides to get x alone

x=-2

Answer:

x= -2

Step-by-step explanation:

Step 1- Distribute into the parenthesis.

(2)3x+(2)1= -10

Step 2- Multiply

6x+2= -10

Step 3- Subtract 2 to both sides.

6x+2= -10

    -2    -2

Step 4- Divide both sides by 6

6x= -12

6     6

x= -2