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nlexa [21]
2 years ago
7

Which is zero of the polynomial expression 7x+21

Mathematics
2 answers:
victus00 [196]2 years ago
7 0
The expression will have a zero when it’s equation is equal to zero:

7x+21=0

Now solve for x, start by isolating the variable (x) by subtracting 21 from both sides

7x = -21

The only thing stopping c from being by itself is 7, so we divide both sides by 7 to isolate x

x = -3
swat322 years ago
4 0

Answer:

The zero is x = -3

  1. Use the Rational Zero Theorem to list all possible rational zeros of the function.
  2. Use synthetic division to evaluate a given possible zero by synthetically dividing the candidate into the polynomial.
  3. Repeat step two using the quotient found with synthetic division.

Please Mark Brainliest If This Helped!

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Can someone please help me with these? I'm giving 100 points so please.
Cerrena [4.2K]

Answer:

1. -2\frac{9}{12}

2. 10\frac{1}{8}

3. 3

4. -1 > x

Step-by-step explanation:

1.

-\frac{33}{12}  \\12 * 2 = 24\\33 - 24 = 9\\-2\frac{9}{12}

2.

10 \frac{1}{8} / \frac{3}{4} = 13\frac{1}{2} \\13\frac{1}{2} + \frac{1}{2} = 14

3. All share the factor of 3

4. Open circle is used for < (less than) or > (greater than). Shade to the right for > or ≥.

I hope this helps! May I please have brainliest? :)

8 0
3 years ago
Read 2 more answers
Graph a line with a slope of -5 that contains the point -3,-4
guapka [62]

Answer:

The equation of the line is 5x + y + 19 = 0

Step-by-step explanation:

The equation of the line with slope 'm' and given a point (x₁, y₁) passing through it we use the Slope - one - point form which is given by:

                                    y - y₁ = m(x - x₁)

The point given is: (-3, -4) and the slope is -5.

We get the equation of the line to be:

y - (-4) = -5(x - (-3))

⇒ y + 4 = -5(x + 3)

⇒ y + 4 = -5x - 15

⇒ 5x + y + 19 = 0. is the required equation of the line.

4 0
3 years ago
Angles ABC and DBE are vertical angles, with angle ABC = 4x, and angle DBE =( 2x+18)
Dmitrij [34]
 V<span>ertical angles are equal.
We have 4x = 2x + 18.
Then, 2x = 18;
x = 18 </span>÷ 2;
x = 9 degrees;
The measure of angle DBE is 2 × 9 + 18 = 36 degrees.
3 0
3 years ago
Identify the longest length. 37.0 in 1.00 m 91.44 cm 1.02 yd 3.10 ft
Margarita [4]
The answer is 1.00 m. Hope this helps.
3 0
3 years ago
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Clifford is making a really big white cake for his sister birthday the recipe calls for 1.5 times as much flour sugar it also ca
lana66690 [7]
Clifford is making a really big white cake for his sister birthday the recipe calls for 1.5 times as much flour sugar it also calls for one half as much better as sugar almond butter flour and sugar together total 7.5 cut how much butter sugar and flour Def Leppard it mean right and solve any Quetion remember today find your variable and to see your answer in the Fenton
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