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jekas [21]
2 years ago
13

Evaluate -2x^2-4x+3 when x=-2

Mathematics
1 answer:
Misha Larkins [42]2 years ago
8 0

Answer:

  3

Step-by-step explanation:

A polynomial is sometimes easier to evaluate if it is first written in Horner form:

  -2x^2 -4x +3 = (-2x -4)x +3

For x = -2, this is ...

  (-2(-2) -4)(-2) +3 = 0(-2) +3 = 3

The value is 3 when x = -2.

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I neeed help please i did not understand it
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Answer:

15.71cm

Step-by-step explanation:

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6 0
3 years ago
X equals 10, Y equals -2, and Z equals -5 what is x divided by y
Aleks04 [339]
X = 10
y = -2

x/y = 10/-2
x/y = -5

Hence, x/y = z
5 0
4 years ago
Read 2 more answers
What is the first step you would take to solve the equation 1 1/2 + 2 1/3 = ?
sineoko [7]

The first step to solve the equation 1 1/2 + 2 1/3 = ? is (a) First, you should convert the mixed numbers to improper fractions.

<h3>How to determine the first step?</h3>

The equation is given as:

1 1/2 + 2 1/3 = ?

The terms in the equation are mixed numbers.

So, the first stem is to convert the mixed numbers to improper fractions

Hence, the true statement is (a) First, you should convert the mixed numbers to improper fractions.

Read more about fractions at:

brainly.com/question/1622425

7 0
2 years ago
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mash [69]
The slope intercept form using the two points would be : y= 2x-13
5 0
3 years ago
Kate and Jean paint a house together in 6 days. If they work alone, Kate takes 5 fewer days than Jean would take to do the same
navik [9.2K]
X = number of days it would take Kate to paint the house by herself. .
<span>x+5 = number of days it would take Jean to paint the house by herself.</span>
<span>Together, they paint the house in 6 days: </span>
<span>1/x + 1/(x+5) = 1/6 </span>
<span>Multiply both sides by 6x(x+5) </span>
<span>6(x+5) + 6x = x(x+5) </span>
<span>12x + 30 = x^2 + 5x </span>
<span>x^2 − 7x − 30 = 0 
</span>therefore the answer is A.

4 0
3 years ago
Read 2 more answers
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