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Colt1911 [192]
3 years ago
7

Question 12 information reference tables look at each expression. is it a factor of 8x4 + 2x2 – 45 when this expression is fully

factored? select yes or no for expressions a –
d.
a. 2x2 + 3 yes no
b. 2x2 + 5 yes no
c. 2x – 3 yes no
d. 4x2 – 9 yes no
Mathematics
1 answer:
vichka [17]3 years ago
3 0
8x^4 + 2x^2 - 45 = (2x^2 + 5)(4x^2 - 9) = (2x^2 + 5)(2x + 3)(2x - 3)

(a) 2x^2 + 3....no
(b) 2x^2 + 5...yes
(c) 2x - 3....yes
(d) 4x^2 - 9)...no...not when it is fully factored
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Answer:

Domain:  all real numbers.  Range:  (-∞, 2000]

Step-by-step explanation:

f(x)=2.5x is a simple "ramp" function, a linear function and a polynomial.  As such, its domain contains "all real numbers."  That value 800 defines the largest value that this f(x) can have:  f(800) = 2.5(800)  = 2000.  

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If BD bisects ABC, m DBC =79 and ABC = (9x-4) find the value of x
zimovet [89]

Answer:

x=18

Step-by-step explanation:

set up the equation:

DBC+DBC=ABC

79+79=(9x-4)

Simplify both sides of the equation.

79+79=9x−4

79+79=9x+−4

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158=9x−4

158=9x−4

Flip the equation.

9x−4=158

Add 4 to both sides.

9x−4+4=158+4

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Divide both sides by 9.

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Answer:

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Step-by-step explanation:

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2 years ago
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jek_recluse [69]

Answer:

C: B+C

Step-by-step explanation:

A-B is even so A and B are either both even or odd.

A-C is odd so one is even and the other is odd.

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In answer A, B, and D we are not sure of the parity of the numbers.

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