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jek_recluse [69]
3 years ago
5

8x+9-4x=25. I for real need help

Mathematics
2 answers:
Anni [7]3 years ago
4 0
8x+9-4x=25
4x+9=25
4x+9-9=25-9
4x=16
4x/4=16/4
X=4
Vitek1552 [10]3 years ago
4 0

Answer:

x=4

Step-by-step explanation:

8x+9-4x=25

8x-4x=4x (combined like terms)

4x+9=25

4x+9-9=25-9 (subtract 9 from both sides)

4x=16

4x/4=16/4

x=4

Hope this helps!

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Factor Completely: x^2-13x-48
salantis [7]

Answer:

Therefore,the required factors are ( x - 16 ) and ( x + 3 )is

Step-by-step explanation:

Given:

x^{2} -13x-48

To Factorize:

Solution:

First remove the factor of -48 such that you multiply the two number, the Product should be -48 and the SUM should be -13.

-48 = -16 × 3

Here, -16 and 3 are the two  required numbers

now the given expression we will split the middle term  and Factorize the given equation.

x^{2} -13x-48 =x^{2} -16x+3x-48\\\\\\\textrm{removing x common and 3 common we get}\\x^{2} -13x-48=x(x-16)+3(x-16)\\\\x^{2} -13x-48=(x-16)(x-3)

Therefore,the required factors are ( x - 16 ) and ( x + 3 )

4 0
3 years ago
14=z-(-12) <br><br>z= what please help me figure out what the answer is because I have no idea​
nirvana33 [79]

Answer:

the answer is 2

Step-by-step explanation:

14=z-(-12)

6 0
2 years ago
When a student sold an Xbox on eBay for $145, she was charged a two-part final value fee: 5.25% of the first $25 of the selling
Contact [7]
Selling Price = $145

Charge on first $25 is 5.25%
5.25% of $25 = \frac{5.25}{100}*25= \frac{5.25}{4} = 1.3125

Charge on rest is 3.25%
rest amount = $145 - $25 = $120
3.25% of $120 = \frac{3.25}{100}*120=3.9

Total\ charge=1.3125+3.9=5.2125 =\boxed{5.21}


6 0
3 years ago
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