3 years ago

Two less than the product of a number and -5 is -42.

Mathematics

1 answer:

Helga [31]3 years ago

6 0

Answer:

Step-by-step explanation:

(p*-5)-2=-42

-5p-2=-42

-5p=-42+2=-40

-5p/-5=-40/-5

You might be interested in

The exponent indicates how many times the ......... is used as a factor

Dimas [21]

Base or base number
for example 2^3 = 2 * 2 * 2 or x^2 = x * x

7 0

3 years ago

How much of a circle does a 100 degree angle turn through

SpyIntel [72]

A circle is 360 degrees so if you are turning 100 degrees... you would get 100/360 of the way around the circle.
100/360 = 5/18
answer: 5/18

6 0

2 years ago

Read 2 more answers

The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).

lesantik [10]

Answer:

(a).

$S_{n} = \frac{n}{2} (4n + 20) \\ \\S _{n - 1} = \frac{(n - 1)}{2} (4n - 4 + 20) \\ \\ S _{n - 1} = \frac{(n - 1)}{2} (4n + 16) \\ \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2} \\ \\ { \boxed{S _{n - 1} = {2 {n}^{2} + 6n - 8}}} \\$

(b).

from general equation:

$S _{n - 1} = \frac{(n - 1)}{2} (4n + 16)$

first term is 4n

common difference:

$16 = \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d = \frac{16}{n - 2}$

8 0

3 years ago

if eight times a number is increased by 3 the result is 19 more than six times this digit. find the number

Verdich [7]

Answer:

Step-by-step explanation:

Even though we don't know the number yet, let's name this number "n".

8n + 3 = 6n + 19

8n + 3 - 6n = 6n + 19 - 6n

2n + 3 = 19

2n = 16

n = 16/2

n = 8

Our number is 8.

Note: This answer is 100% correct.

6 0

2 years ago

Read 2 more answers

Your paycheck this week is $138.25. You put the $42.54 in a savings account that pays an interest rate of 6%, compounded yearly.

ASHA 777 [7]

Amount of money you will have = 42.54(1+6/100)^5=56.9

3 0

3 years ago