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Phoenix [80]
3 years ago
12

NEED TO FIGURE THIS OUT RIGHT NOW CAN SOMEBODY PLEASE HELP ME? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Mathematics
1 answer:
kow [346]3 years ago
5 0

Answer:

c

Step-by-step explanation:

Given the roots are x = - 1 + 4i and x = - 1 - 4i then the factors are

(x - (- 1 + 4i))(x - (- 1 - 4i))

= (x + 1- 4i )(x + 1 + 4i )

= (x + 1)² - 16i² → [ i² = - 1 ]

Expand and simplify

= x² + 2x + 1 + 16

Hence

x² + 2x + 17 = 0 → c

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​ Quadrilateral ABCD ​ is inscribed in this circle. What is the measure of angle B? Enter your answer in the box. m∠B= ° A quadr
Over [174]

Answer:

m∠B = 157°

Step-by-step explanation:

Cyclic quadrilateral is the quadrilateral whose vertices lie on the edge of the circle

In the cyclic quadrilateral each two opposite angles are supplementary (the sum of their measures is 180°)

∵ Quadrilateral ABCD is inscribed in a circle

- That means its four vertices lie on the edge of the circle

∴ ABCD is a cyclic quadrilateral

<em>Each two opposite angles in the cyclic quadrilateral are supplementary (The sum of their measures is 180°)</em>

∵ ∠B and ∠D are opposite angles in the quadrilateral ABCD

∴ m∠B + m∠D = 180° ⇒ opposite ∠s in a cyclic quadrilateral

∵ m∠B = (6x + 19)°

∵ m∠D = x°

- Substitute them in the rule above

∴ (6x + 19) + x = 180

- Add the like terms in the left hand side

∴ (6x + x) + 19 = 180

∴ 7x + 19 = 180

- Subtract 19 from both sides

∴ 7x = 161

- Divide both sides by 7

∴ x = 23

<em>Substitute the value of x in the expression of the measure of ∠B to find its measure</em>

∵ m∠B = 6(23) + 19

∴ m∠B = 138 + 19

∴ m∠B = 157°

5 0
4 years ago
write the equation for the quadratic function that has the vertex at (1,3) and passes through the point (0,5)
Kisachek [45]
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The final equation in vertex form is f(x) = 2(x-1)^2+3.

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3 years ago
2. A block of wood has a mass of 6.0 g and a volume of 12.0 cm<br> wood?
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Wood will be your best answer choice
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3 years ago
11.63 as a mixed number
brilliants [131]
11 63/100
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1163/100
8 0
3 years ago
Read 2 more answers
Identify each coefficient for 3m. this question is on my homework what Is the answer?
Minchanka [31]

Answer: 3

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4 0
3 years ago
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