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3 years ago

5n + 10 = 10n - 65Show steps I will ly

2 answers:

6 0

Subtract 5n from 10n which gives you 10=5n-65 and then add 65 to 10 so now 75=5n then divide 75 by 5 which gives you 15. What you do to one side you have to do to be other

natita [175]3 years ago

5 0

Answer: 15

Step-by-step explanation: 5n + 10=10n - 65

-10n -10n

------------------------------

-5n +10 = -65

-10 -10

----------------------------

-5n = -75

divide -5 on both sides and you should get positive 15

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Sedbober [7]

49 would be in the next space after 42 because this sequence is counting by 7s

6 0

3 years ago

Write 2/3 as a percent. Round your answer to the nearest tenth of a percent.

sweet [91]

divide 2 b 3

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8 0

3 years ago

1. W+ 4 = 16

ExtremeBDS [4]

1. W=16-4=12
2. X=-12-7=-19
3. W=6+15=21
5. y=-2+9=7
6. q=35/7=5

Both questions 4 and 7 aren’t written correctly!!

8 0

3 years ago

URGENT will give brainliest!!! Element X decays radioactively with a half life of 5 minutes. If there are 540 grams of Element X

yKpoI14uk [10]

Answer:

7.2 minutes

Step-by-step explanation:

The formula to find the time using the radioactive decay rate formula is given as:

t = t½ × In(Nt/No)/-In2

Where

t½ = half life = 6 minutes

No = Initial Amount = 260 grams

Nt = Amount after decay

= 113 grams

Hence:

t = 6 × In(113/260)/-In2

t = 7.2131331036796 minutes

Approximately = 7.2 minutes

7 0

2 years ago

What is the missing value in the proportion 4/5 = x/30?

ra1l [238]

Answer:

$\displaystyle x = 24$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

$\displaystyle \frac{4}{5} = \frac{x}{30}$

Step 2: Solve for x

[Multiplication Property of Equality] Cross-multiply: $\displaystyle 5x = 120$
[Division Property of Equality] Divide 5 on both sides: $\displaystyle x = 24$

4 0

3 years ago

5n + 10 = 10n - 65Show steps I will ly​

5n + 10 = 10n - 65Show steps I will ly