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11111nata11111 [884]
2 years ago
10

James determined that these two expressions were equivalent expressions using the values of x = 4 and x = 6. Which statements ar

e true? Check all that apply.When x = 2, both expressions have a value of 18. The expressions are only equivalent for x = 4 and x = 6. The expressions are only equivalent when evaluated with even values. The expressions have equivalent values for any value of x. The expressions should have been evaluated with one odd value and one even value. When x = 0, the first expression has a value of 4 and the second expression has a value of 5. The expressions have equivalent values if x = 8.
Mathematics
2 answers:
koban [17]2 years ago
5 0

Answer:

Step-by-step explanation:

Vsevolod [243]2 years ago
4 0

Answer:

Step-by-step explanation:

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Which statement about the following equation is true?<br>2x2-9x+2-1​
Furkat [3]

Complete Question:

Which statement about the following equation is true?

2x^2-9x+2 = -1

A) The discriminant is less than 0, so there are two real roots

B) The discriminant is less than 0, so there are two complex roots

C) The discriminant is greater than 0, so there are two real roots

D) The discriminant is greater than 0, so there are two complex roots

Answer:

C) The discriminant is greater than 0, so there are two real roots

Step-by-step explanation:

The given equation is 2x^2-9x+2 = -1 which by simplification becomes

2x^2 - 9x + 3 = 0

For a quadratic equation of the form ax^2 + bx + c = 0, the discriminant is given by the equation, D = b^2 - 4ac

If the discriminant D is greater than 0, the roots are real and different

If the discriminant D is equal to 0, the roots are real and equal

If the discriminant D is less than 0, the roots are imaginary

For the quadratic equation under consideration, a = 2, b = -9, c = 3

Let us calculate the discriminant D

D = (-9)² - 4(2)(3)

D = 81 - 24

D = 57

Since the Discriminant D is greater than 0, the roots are real and different.

3 0
3 years ago
The wettest U.S. city is Mobile, Alabama. The city's chance of rain is 16%. out of a 14- day period, about how many rainy days w
forsale [732]
The answer should B. 2 because 14/100 is equal to x/14. Simplified it is 100x/100=196/100. 196 divided by 100 equals 1.96 which rounds to 2.
7 0
3 years ago
Hi! Do any of you know how I can solve this exercise?? I know the final result is 2, but I'm not sure what I have to do to get t
Anestetic [448]

Answer:

Step-by-step explanation:

( 0.5 )³ × 2^{4} = ( 0.5 × 2 )³ × 2 = 1³ × 2 = 2

5 0
2 years ago
Solve for x<br> 10 + 4x = 5(z - 6) + 33
gogolik [260]

Answer:

Step-by-step explanation:

X=5/4z - 7/4

5 0
3 years ago
Read 2 more answers
3x2 + 5x - 7(x2 + 4)
goldenfox [79]

Answer:

-4x^2+5x-28

Step-by-step explanation:

Expand -7(x^2 +4) = 3x^2+5x-7x^2-28

Simplify 3x^2+5x-7x^2-28 = -4x^2+5x-28

5 0
3 years ago
Read 2 more answers
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