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stellarik [79]
3 years ago
11

Please Help!! I am behind in my class and I don’t know how to do this!!

Mathematics
1 answer:
lubasha [3.4K]3 years ago
7 0

Answer:

emmm nose ponga lo en español para ayudarles

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-1(x+5)=3[x+(2x-1)]<br> solved and justified each step
madreJ [45]

Answer:

<h2>x = -0.2</h2>

Step-by-step explanation:

-1(x+5)=3[x+2x-1)]\\\\\text{for}\ -1(x+5):\ \text{distribtutive property}\\\text{for}\ [x+(2x-1)]:\ \text{associative property}\\\\(-1)(x)+(-1)(5)=3[(x+2x)-1]\\-x-5=3(3x-1)\\\\\text{for}\ 3(3x-1):\ \text{distributive property}\\\\-x-5=(3)(3x)+(3)(-1)\\-x-5=9x-3\\\\\text{for the equation}:\ \text{addition property of equality}\\\\-x-5=9x-3\qquad\text{add 5 to both sides}\\-x-5+5=9x-3+5\\-x=9x+2\\\\\text{for the equation:}\ \text{subtraction property of equality}\\\\-x=9x+2\qquad\text{subtract}\ 9x\ \text{from both sides}

-x-9x=9x-9x+2\\-10x=2\\\\\text{for the equation:}\ \text{division property of equality}\\\\-10x=2\qquad\text{divide both sides by -10}\\\dfrac{-10x}{-10}=\dfrac{2}{-10}\\x=-0.2

\text{Distributive property:}\ a(b+c)=ab+ac\\\text{Associative property:}\ (a+b)+c=a+(b+c)

6 0
3 years ago
Simplify each expression <br><br>1+10a-5a <br>x-9-3x
Burka [1]
1.) 1+10a-5a
Subtract 5a from 10a
Final Answer: 1+5a

3.) x-9-3x
Subtract 3x from x
Final Answer: -9-2x

5.) 1-4n+2n-1
Subtract 1 from 1
-4n+2n
Add
Final Answer: -2n

7.) 10k-3k
Subtract
Final Answer: 7k

9.) 5r+4-4
Subtract
Final Answer: 5r
7 0
3 years ago
Read 2 more answers
Helllllllppppppppppp what Is 20 divided by 8
Contact [7]

Answer:

2.5

Step-by-step explanation:

IVE BEEN WATCHING YOUR ACCOUNT STOP STEALING POINTS OR YOUR ACCOUNT WILL BE TERMINATED.

4 0
2 years ago
How does P minus 13 equals -2
Tems11 [23]
Hey there!
Let's do this step by step:

1. P-13=2  -------Write out the equation

2. P-13+13=-2+13  ------- Undo the operations

3. \frac{p}{1} = \frac{11}{1}  ------- What you get

4. P=11

(If you feel that my answer has helped you, please consider rating it and giving it a thank you! Also, feel free to make the best answer, the brainliest answer!)

<span>Thank you for being part of the brainly community! :D</span>
8 0
3 years ago
Read 2 more answers
A sequence is defined recursively using the formula f(n+1)=-0.5f(n). If the first term of the sequence is 120, what is f(5)?
kumpel [21]
<u><em>Answer:</em></u>
f (5) = 7.5

<u><em>Explanation:</em></u>
<u>The function given is:</u>
f (n+1) = -0.5 f (n)

<u>We are also given that:</u>
first term is 120
<u>This means that:</u>
f (1) = 120

<u>We will get the other terms by substitution as follows:</u>
f (2) = -0.5 f (1) = -0.5(120) = -60
f (3) = -0.5 f(2) = -0.5(60) = 30
f (4) = -0.5 f(3) = -0.5(30) = -15
f (5) = -0.5 f(4) = -0.5(-15) = 7.5

Therefore, f (5) = 7.5

Hope this helps :)
5 0
3 years ago
Read 2 more answers
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