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elena55 [62]
3 years ago
7

Please help, Will get brainiest

Mathematics
1 answer:
Gre4nikov [31]3 years ago
5 0
8. answer is 7
this formula should help you solve the rest:
solve alike terms always. literally thats the key. dont add a T and a D. onlly a T and another T. got it?


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If f(x) = x^2 - 4(x) + 6, find x if f(x) = 27
Elena L [17]

Answer:

x = - 3 or x = 7

Step-by-step explanation:

Given

f(x) = x² - 4x + 6

If f(x) = 27, then equating gives

x² - 4x + 6 = 27 ( subtract 27 from both sides )

x² - 4x - 21 = 0 ← in standard form

Consider the factors of the constant term ( - 21) which sum to give the coefficient of the x- term ( - 4)

The factors are - 7 and + 3, since

- 7 × 3 = - 21 and - 7 + 3 = - 4, hence

(x - 7)(x + 3) = 0

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x - 7 = 0 ⇒ x = 7

4 0
3 years ago
Someone help me please
olasank [31]
The answer is C.!!!!
5 0
3 years ago
Read 2 more answers
Choose the answer that makes the sentence true. (Blank) real numbers are integers. A. All B. Some C. No
zvonat [6]

Answer:

Some real numbers are integer

Step-by-step explanation:

Real numbers ;

  1. Natural numbers (counting numbers) = Integer
  2. Whole numbers = Integers
  3. Integers =Integers
  4. Rational numbers (fractions , repeating or terminating decimals) = Fraction and decimal are not integers
  5. Irrational numbers. = Not integer
4 0
3 years ago
Read 2 more answers
Does (0,0) make the equation y = 4x true?
larisa86 [58]

Answer:

No

Step-by-step explanation:

(0,0) cannot help prove the values of y=4x because you cant confirm the gradient and it certainly wont help you confirm whether there's no intercepts.

7 0
3 years ago
What is the percent of change from<br> 65 to 52?<br> Round to the nearest percent.
sesenic [268]

Answer:

In a representation of 100, the percent change is just a number change, meaning 65 - 52, or 13 is that change. This means that the percent change from 65 to 52 is 13%

7 0
3 years ago
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