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ollegr [7]
3 years ago
15

Use the substitution method to solve the system of equations 8x5y=9 y=x+7

Mathematics
1 answer:
Greeley [361]3 years ago
3 0

Answer:

( − 7.00006693 , − 0.00006693 )    ( 0.68099975 , 7.68099975 )

Step-by-step explanation:

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Rewrite the function by completing the square.
ddd [48]

Answer:

  f(x) = (x -6)² +14

Step-by-step explanation:

Completing the square involves writing part of the function as a perfect square trinomial.

<h3>Perfect square trinomial</h3>

The square of a binomial results in a perfect square trinomial:

  (x -h)² = x² -2hx +h²

The constant term (h²) in this trinomial is the square of half the coefficient of the linear term: h² = ((-2h)/2)².

<h3>Completing the square</h3>

One way to "complete the square" is to add and subtract the constant necessary to make a perfect square trinomial from the variable terms.

Here, we recognize the coefficient of the linear term is -12, so the necessary constant is (-12/2)² = 36. Adding and subtracting this, we have ...

  f(x) = x² -12x +36 +50 -36

Rearranging into the desired form, this is ...

  f(x) = (x -6)² +14

__

<em>Additional comment</em>

Another way to achieve the same effect is to split the given constant into two parts, one of which is the constant necessary to complete the square.

  f(x) = x² -12x +(36 +14)

  f(x) = (x² -12x +36) +14

  f(x) = (x -6)² +14

6 0
2 years ago
Here's a graph of a linear function. help
Nostrana [21]

Answer:

its leaner at -4

Step-by-step explanation:

4 0
2 years ago
Rate of change (0,0) and (5,5)
Tatiana [17]
The rate of change is 1.
Use the slope formula 5 - 0 is the rise and 5 - 0 is the run
5/5 = 1
7 0
3 years ago
There are 910 scooters in a show room out of which 654are new and rest are old. find out number of old scooters
Soloha48 [4]

Answer:

254

Step-by-step explanation:

Because the are 910 scooters in all and their 654 new that means the remains are old

8 0
1 year ago
What is the perimeter of the triangle?<br> O 22 units<br> O 30 units<br> O44 units<br> O 60 units
umka21 [38]

Answer:

22 units

Step-by-step explanation:

Add 12, 4 , and 6 and you will get 22

3 0
3 years ago
Read 2 more answers
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