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Solnce55 [7]
2 years ago
7

Factor the polynomial f (x) = x3 – 19x + 30 if x – 3 is a factor.

Mathematics
1 answer:
avanturin [10]2 years ago
7 0

Answer:

Step-by-step explanation

By Using Synthetic Division Method:

3                   1    0    -19    30

                          3      9    -30

                    1     3    -10    0

factorise: (x^2+3x-10)(x-3)

                =(x+5)(x-2)(x-3)

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Compare the perimeters of the two regular figures. Which statement is true?
adell [148]

Answer:

(A). The perimeter of the octagon is greater than that of the hexagon.

Step-by-step explanation:

Since, hexagon consists of 6 sides and 6 angles, thus the measure of one angle of the hexagon will be=\frac{(n-2){\timeS}180^{\circ}}{6}

=\frac{(6-2){\timeS}180^{\circ}}{6}

=\frac{(4){\timeS}180^{\circ}}{6}

=120^{\circ}

Now, since MQ is the angle bisector of the one of the angle of the hexagon, therefore ∠QMP=60°.

Now, from ΔQMP. we have

\frac{MP}{MQ}=cos60^{\circ}

MP=\frac{1}{2}

Thus, the perimeter of the hexagon is:

P=12{\times}MP

P=12{\times}\frac{1}{2}

P=6 units

Thus, the perimeter of hexagon is 6 units.

Also, Since, octagon consists of 8 sides and 8 angles, thus the measure of one angle of the octagon will be=\frac{(n-2){\timeS}180^{\circ}}{8}

=\frac{(8-2){\timeS}180^{\circ}}{8}

=\frac{(6){\timeS}180^{\circ}}{8}

=135^{\circ}

Now, since AP is the angle bisector of the one of the angle of the octagon, therefore {\angle}PAC=cos\frac{135}{2}.

From ΔAPC, we have

AC=cos\frac{135}{2}

Now, Perimeter of octagon is:

P=16{\times}cos\frac{135}{2}

P=16{\times}0.382

P=6.122 units

Thus, the perimeter of octagon is 6.122 units.

Now, the perimeter of octagon is greater than perimeter of the hexagon, thus option A is correct that is The perimeter of the octagon is greater than that of the hexagon.

4 0
3 years ago
Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used.
Masteriza [31]

Answer:

For the box that you did not fill out the area of that shape is 190 sq units

Step-by-step explanation:

10 x 5 = 50 ÷ 2 = 25

10 x 15 = 150

10 x 3 = 30 ÷ 2 = 15

25 + 150 + 15 = 190

5 0
2 years ago
2. How would you write 1,780/1,000 as a percentage? (write your answering using a percent sign)
viktelen [127]

Answer: 178%

Step-by-step explanation:

1780/1000 = 178/100

7 0
3 years ago
Read 2 more answers
The sum of 5x2y and (2xy2 + x2y) is
allochka39001 [22]
 <span>5x²y + 2xy² + x²y 

Combining like terms would be
6x²y + 2xy² 

The two terms are now unique and cannot be combined any further. </span><span>
</span>
6 0
3 years ago
Help please photo is above
Zina [86]

Answer:

y = 5

x = 10

Step-by-step explanation:

-4(2y) + 11y

-8y + 11y = 15

3y = 15

/ 3 /3

y = 5

x = 10

3 0
2 years ago
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