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3 years ago

How many solutions does the equation 5x + 10 = 5x − 8 have?

Mathematics

2 answers:

Alexxandr [17]3 years ago

7 0

Answer:

It doesn't have a solution because if you try to graph each line y=5x+10 and y=5x-8, you will have a parallel line

Step-by-step explanation:

EastWind [94]3 years ago

6 0

No solution I’ve done this already

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Stevens bank account balance was $212 at the beginning of the month he withdrew $63,$74 and $39 he also deposited $105 and $86 w

Natali5045456 [20]

Answer:

$227

Step-by-step explanation:

First we can add up the withdrawals(63, 74, and 39) which is 176. We can then subtract 176 from 212 to get 36.

So, after the withdrawals Steven has 36 dollars.

We can add the deposits together to get 191. We can then add 191 to 36 to get 227.

8 0

2 years ago

WILL MARK BRAINLIEST!!!

Ludmilka [50]

Answer:

(C. one solution

Step-by-step explanation:

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3 years ago

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(x+3)(x−3)<br> In polynomial standard form

ozzi

Answer:

(x^2-9)

Step-by-step explanation:

Well, using FOIL you can put an polynomial in standard form.

4 0

3 years ago

Helpp WITH 2ND AND 4TH LINE !

Helen [10]

Answer:

1. x= 11.2

2. x= 8

Step-by-step explanation:

$124+5x=180\\-124 -124\\5x=56\\\frac{5x}{5} = \frac{56}{5} \\ x=11.2$

Check:

$124+5(11.2)=180\\124+56=180\\180=180$

$7x-6=50\\+6 +6\\7x=56\\\frac{7x}{7} = \frac{56}{7} \\x=8$

Check:

$7(8)-6=50\\56-6=50\\50=50$

3 0

2 years ago

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9x-20/(x+6)^2 partial fraction decomposition

Kryger [21]

We're looking for $a,b$ such that

$\dfrac{9x-20}{(x+6)^2}=\dfrac a{x+6}+\dfrac b{(x+6)^2}$

Multiplying both sides by $(x+6)^2$ gives us

$9x-20=a(x+6)+b$

Notice that when $x=-6$ , the term involving $a$ vanishes and we're left with

$9(-6)-20=b\implies b=-74$

Then

$9x-20=a(x+6)-74=ax+6a-74\implies a=9$

so that

$\dfrac{9x-20}{(x+6)^2}=\boxed{\dfrac9{x+6}-\dfrac{74}{(x+6)^2}}$

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2 years ago

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