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katovenus [111]
3 years ago
15

Simplify: 7x2+ 4X - X² .

Mathematics
2 answers:
Katarina [22]3 years ago
8 0

Simplify the equation by combining like terms:

7x²+ 4x - x²

Solve:

7x²+ 4x - x²

7x² and -x² are like terms, so combine them.

6x² + 4x

There are no more like terms, so your answer would be: 6x² + 4x

Answer:

6x² + 4x

lisabon 2012 [21]3 years ago
5 0

Answer:

x^2+4x+14

Step-by-step explanation:

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Marysya12 [62]

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If f(c)=0, which of the following statements must be true?
Tju [1.3M]

Answer:

C.

Step-by-step explanation:

If f(c)=0 then (c,0) is on the graph.

In general, if f(a)=b then (a,b) is on the graph.

By factor theorem if f(c)=0 then x-c is a factor.

If x-c is a factor then x-c will divide f(x) evenly.  We know this because the remainder will be 0 because we know x-c is a factor of f.

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7 0
3 years ago
Read 2 more answers
What is the value of x
djyliett [7]

Hey there!


Assuming #1 ….


x + 7x + x = 180°
REWORD

1x + 7x + 1x = 180°

COMBINE the LIKE TERMS

(1x + 7x + 1x) = 180°

8x + 1x = 180°

9x = 180°

DIVIDE 9 to BOTH SIDES

9x/9 = 180/9

CANCEL out: 9/9 because it equal 1

KEEP: 180/9 because it give you the x-value

NEW EQUATION: x = 180/9

SIMPLIFY IT!
x = 20
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Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

3 0
3 years ago
Read 2 more answers
PLZ HELP ASAP TANGENTS OF CIRCLES
bezimeni [28]
First, we are given that the inscribed angle of arc CB which is angle D is equal to 65°. This is half of the measure of the arc which is equal to the measure of the central angle, ∠O. 
 
    m∠O = 2 (65°) = 130°

Also, the measure of the angles where the tangent lines and the radii meet are equal to 90°. The sum of the measures of the angle of a quadrilateral ACOB is equal to 360°. 

     m∠O + m∠C + m∠B + m∠A = 360°

Substituting the known values,
     130° + 90° + 90° + m∠A = 360°

The value of m∠A is equal to 50°.

<em>Answer: 50°</em>
7 0
3 years ago
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