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4 years ago

What is the sum of the terms of the series (−1) + (−2) + (−3) + . . . + (−10)?

1 answer:

8 0

You can solve this problem by using the Gauss method. The Gauss method is a method where you can add the first and last numbers together, and then multiply by how many times that appears. Here, the sum of the first and last number is -11. In this sequence, it would appear ten times (since there are ten terms and the terms are used twice in every eleven). -11 * 5 is -55, so that means the answer to this question is -55.

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Alex went to the grocery store and bought 5 avocados. He paid $10 and received $4.50 in change. How much did each avocado cost i

Delvig [45]

Answer:

$1.10

Step-by-step explanation:

We have been that Alex went to the grocery store and bought 5 avocados. He paid $10 and received $4.50 in change.

First of all, we will find amount paid for 5 avocados by subtracting $4.50 from $10.

$\text{Amount paid for 5 avocados}=\$10-\$4.50$

$\text{Amount paid for 5 avocados}=\$5.50$

Now, we will divide $5.50 by 5 to find cost of each avocado.

$\text{Cost of each avocado}=\frac{\$5.50}{5}$

$\text{Cost of each avocado}=\$1.10$

Therefore, the cost of each avocado is $1.10.

3 0

3 years ago

Horizon Building Company is constructing a new office building. They have 5,176 ceiling tiles. The office building will have nin

slavikrds [6]

Answer:575 and 1 extra tile

Step-by-step explanation:if the total tiles is 5,176 which will be used in 9 floors .We will divide the total tiles by the floors .Therefore we will get 5176 /9 =575.111

Therefore each floor will have 575 tiles

To get the remaining tiles

575*9 = 5175 which gives us a remainder of 1 tile when you subtract the total 5176 -5175 =1

5 0

3 years ago

Tommy opens an account with $50 and deposits $10 a week. The same week, Shelby opens an account with $25 and adds $10 a week. ho

asambeis [7]

There is no solution since they are both adding $10 to their accounts every week.

6 0

3 years ago

Let f(x) = 1/ x-4 and g(x) = 1/x -2, evaluate the following.

musickatia [10]

Step-by-step explanation:

Key : Plug in the numbers given in the parenthesis into the x values of the corresponding functions.

f(1/2) = 1/ 1/2 - 4 = 1/-7/2 = -2/7

g(1/2) = 1/1/2 - 2 = -3/2

f(-1/4) = 1/-1/4-4 = 1/-17/4 = -4/17

g(-1/4) = 1/-1/4 - 2 = 1/-9/2 = -2/9

7 0

2 years ago

Domain Relation (Calculus)

adell [148]

Answer:

Domain is that interval in which the function is defined ....

So this function is defined everywhere except 4 and 7 ,

option D is correct....

5 0

2 years ago