All categories

2 years ago

Find the sum. 48 + 45 + 42+...+(-81) + (-84)

Mathematics

2 answers:

tatuchka [14]2 years ago

7 0

Answer:

-30

Step-by-step explanation:

use a calculator

hope this helped

Agata [3.3K]2 years ago

4 0

Answer:

look below

Step-by-step explanation:

i dont know what that +... thing is

but when youre adding the negatives youre really just adding that number so this is just

48+45+42+81+84

45+42 is 87

now we have

48 + 87 + 81 + 84

87 + 81 is 168

48 + 84 is 132

now we have

168 + 132 and that is exactly 300

again dont know what the ... is so cant help you there

You might be interested in

Jan is 2/3 of Karyn's age. Jan's age 8 years ago is 2/5 of Katyn's age 4 yeats from now. Jan is how many younger than Karyn?

Elden [556K]

Answer:

12 years younger.

Step-by-step explanation:

Let Jan's age be J and Karyn's age be K.

$J= \frac{2}{3} K$

Jan's age 8 years ago is 2/5 of Karyn's age 4 yeaRs from now.

$J-8 = \frac{2}{5} (K+4)$

=> $(\frac{2}{3} - \frac{2}{5} ) K = \frac{8}{5} + 8$

=> 4K = 48 X 3

=> K= 36.

=> J= 24.

So Jan is 12 years younger.

8 0

3 years ago

Consider the functions:

jolli1 [7]

The x and y axis so that’s why it’s true

5 0

3 years ago

Read 2 more answers

How to do my homework in math

Leokris [45]

Answer:

By doing it

Step-by-step explanation:

LOL

6 0

2 years ago

Find the volume of a sphere that has a surface area of 16 sq. in.

Vaselesa [24]

Given the surface area of the sphere, for us to obtain the volume we need to get the value of the radius. The surface area of the sphere is given by:
S.A=4πr^2
hence the radius can be calculated as follows;
16=4πr^2
4=πr^2
r=(4/π)^(1/2)
volume of a sphere is given by:
V=4/3πr^3
=4/3*π*(4/π)^(1/2))^3
=32/3 cubic inches

4 0

3 years ago

Read 2 more answers

N^2 + 36n + c "find the value of c that completes the square"

RSB [31]

For this case we have the following polynomial:

$n ^ 2 + 36n + c$