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lara31 [8.8K]
3 years ago
8

Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below.

Mathematics
2 answers:
Blababa [14]3 years ago
6 0
I think its step 3 but i dont sure sorry
Tomtit [17]3 years ago
4 0
It is step 3 because 3(y+7) = 3y+21, so the 3 wasn't distributed to ALL of the values on the parentheses.
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How did you fine the answer. The answer that I have is correct but how do you get to it . I need 1a 1b and 2
Anna71 [15]

1a:

580 - (580 × .1) - 20

580 - (58) - 20

522 - 20

502

1b:

990 - (990 × .25) - 20

990 - (247.5) - 20

742.5 - 20

722.5

I'm not sure how to solve #2.

6 0
3 years ago
Mr. Luis wants to sell his house. The state he lives in charges a 3.5% sales tax on the sale of a house. The county charges a 3.
GarryVolchara [31]

We have been given that Mr. Luis wants to sell his house. The state he lives in charges a 3.5% sales tax on the sale of a house. The county charges a 3.9% sales tax, and the city charges a 2.2% sales tax.

We are asked to find the total tax, if Mr Luis sells his home for $122,500.

To find total tax, we will add all tax rates as they are being applied to same base.

\text{Total of tax rates}=3.5\%+3.9\%+2.2\%

\text{Total of tax rates}=9.6\%

Now we will find 9.6% of $122,500 to find total tax bill.

\text{Total tax bill}=\$122,500\times \frac{9.6}{100}

\text{Total tax bill}=\$1225\times 9.6

\text{Total tax bill}=\$11,760

Therefore, the total tax bill of Mr. Luis would be \$11,760.

5 0
3 years ago
While hiking, Sanjay went up 200 meters. If Sanjay started at 500 meters above sea level, which integers represents his elevatio
Aliun [14]

Answer:300

Step-by-step explanation:

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3 0
3 years ago
Does 5.2 belong with irrational or rational numbers?
Dominik [7]

Answer:

The correct answer is "rational" . It is not an "integer" because it is a "decimal value". It is not "irrational" because the decimal value terminates and does not repeat.

7 0
3 years ago
Tolong bantu jawab please, makasih sebelumnya!
sweet [91]

Answer:

2x² - 3x - 2

Explain:

Use the FOIL method: (a +b)(c +d) = ac + ad +bc +bd.

2x² + x - 4x - 2

Collect like terms.

2x² + (x - 4x) - 2

Simplify.

2x² - 3x - 2

6 0
3 years ago
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