Ask question

Ask question

All categories

2 years ago

9

Write an equivalent expression in simplest form. 3+2(5x)-7

1 answer:

Anettt [7]2 years ago

7 0

Answer:

10x-4

Step-by-step explanation:

You might be interested in

Use the formula to evaluate the series 1/4 + 1/9 + 1/27 + 1/81.

Dmitriy789 [7]

Is the first term supposed to be 1/4, or did you actually mean 1/3?

I'll assume the latter. Write

$S=\dfrac13+\dfrac19+\dfrac1{27}+\dfrac1{81}$
$S=\dfrac13+\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}$
$\dfrac13S=\dfrac1{3^2}+\dfrac1{3^3}+\dfrac1{3^4}+\dfrac1{3^5}$
$\implies S-\dfrac13S=\dfrac13-\dfrac1{3^5}$
$\dfrac23S=\dfrac13\left(1-\dfrac1{3^4}\right)$
$S=\dfrac12\left(1-\dfrac1{81}\right)$
$S=\dfrac{40}{81}$

8 0

3 years ago

Acellus<br> Find the measure of 46.<br> 620<br> 26<br> 46 = [?]<br> Enter

goldenfox [79]

No ruler??? wow. hard

7 0

3 years ago

Read 2 more answers

Plz hlp Translate the following phrase to an expression: the difference between twenty and twice a number.

Mazyrski [523]

20 - 2n

Difference means taking away
Two times a number means whatever n is it is multiples by 2 and subtracted from 20

4 0

3 years ago

Find GK<br> Help plz...No links!! I will report

wariber [46]

Answer:

GK = 20

Step-by-step explanation:

3 0

2 years ago

Jenifer had 30$ to spend on her self she spent 1/5 Of the money in a sandwich 1/6 for a ticket to a museum and 1/2 Of It On a Bo

denis-greek [22]

Your answer is $29.13 I hope this helped, I apologize for the late response!

3 0

3 years ago