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katrin2010 [14]
2 years ago
9

Simplify the expression by combining like terms. -9x + 2y - 7 + 8y + 2x + 20 Please help me

Mathematics
2 answers:
blsea [12.9K]2 years ago
4 0

Answer:

-7x+20y+13

Step-by-step explanation:

yanalaym [24]2 years ago
4 0

Answer:

-7x+10y+13

Step-by-step explanation:

want the explanation?

I guess no cause you know that we need to collect like terms. :)

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Solve for x. Round your answer to two decimal places. Show your work for full credit.
omeli [17]

Answer:

x ≈ 14.30

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Trigonometry</u>

  • sin∅ = opposite over hypotenuse

Step-by-step explanation:

<u>Step 1: Define variables</u>

∅ = 39°

opposite leg = 9

hypotenuse = x

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute:                              sin39° = 9/x
  2. Multiply <em>x</em> on both sides:       xsin39° = 9
  3. Isolate <em>x</em>:                                 x = 9/sin39°
  4. Evaluate:                                 x = 14.3011
  5. Round:                                    x ≈ 14.30
5 0
3 years ago
Carol posts her product on Facebook; it sells for $15. If 5 percent of her 25,000 friends decide to purchase it, how much will C
MaRussiya [10]
18,750....................
6 0
3 years ago
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on monday, the high was 60 degrees farenheit. On tusday, thus high was 18% more. How much did the high increase from monday to t
Mkey [24]

Answer:

10.8 degrees Fahrenheit

Step-by-step explanation:

If it increased by 18%, then multiply 60 * 1.18 to get 70.8, and find the difference.

Alternatively, you can just do 60 * .18 to get the answer directly.

4 0
3 years ago
A/4 - 5/6 = 1/2<br> a/4 - 5/6 = 1/2 help
alexgriva [62]

Answer:

a = 16/3 or 5 1/3 or 5.33...

Step-by-step explanation:

to find a you must first make all of the denominators the same

you must find 4 6 and 2s CGF

and that is 12

so multiply a/4 by 3/3 and get 3a/12

then multiply 5/6 by 2/2 and get 10/12

and lastly multiply 1/2 by 6/6 and get 6/12

at this point you can set the equation up like this

3a/12 - 10/12 = 6/12

but then you can multiply everything by 12

3a - 10 = 6

and then solve

add 10 to both sides

3a = 16

then divide 3 on each side

a = 16/3 or 5 1/3 or 5.33...

8 0
2 years ago
List 2 common multiples of 2 , 5
neonofarm [45]

Answer:

2: 2, 4, 6, 8, 10

5: 5, 10

lcm: 10

3 0
3 years ago
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