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Snezhnost [94]
2 years ago
10

If f(X)=2x-1/2x+5’ Findf (-3)

Mathematics
1 answer:
ankoles [38]2 years ago
7 0

Answer:

0.5.

Step-by-step explanation:

Substitute x = -3 into the guiven function:

= 2(-3) - 1/2(-3) + 5

= -6 + 1.5 + 5

= -4.5 + 5

= 0.5

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They are both the same equations, the procedure to obtain x value will be equivalent.

8 0
3 years ago
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Can i have some help on both of these questions for brainlist !!!!!!!!!!!
Nezavi [6.7K]

Answer:

B and A

Step-by-step explanation:

What I did for these problems is plug in the numbers listed for the x-value. For example, in your calculator you’d put; (1/2)^3 and that’d get you 1/8. Then, try it for 8^(2 - 3) which is also 1/8. So, (1/2)^3 = 8^(2 - 3).

The same process for the second problem. 16^(2(7/3) -3) = 4^((7/3) + 1). This should give you 101.59…

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5 0
2 years ago
Which of the following scales of measurement lacks numeric properties?
Rus_ich [418]

Answer: A

Step-by-step explanation:

The nominal scale by definition only deals with non-numeric or non-quantitative variables or where numbers have no numerical value. The nominal scale uses tags or labels instead of number to classify or identify an object being measured.

5 0
3 years ago
Stuck, anyone can help?
expeople1 [14]

Answer:

Step-by-step explanation:

\sqrt{x-3} = x - 5 ( x ≥ 3 )

( \sqrt{x-3} )² = ( x - 5 )²

x - 3 = x² - 10x + 25

x² - 11x + 28 = 0

(x - 4)(x - 7) = 0

x_{1} = 7

x_{2} = 4

Check the answer:

1). x = 7

\sqrt{7-3} = 7 - 2

√4 = 2

2 = 2

2). x = 4

\sqrt{4-3} = 4 - 5

1 = - 1 (False statement) ⇒ x = 4 is an extraneous solution.

6 0
3 years ago
Please answer thank you !!!
BartSMP [9]

Answer:

-3x³ - 4x² + x - 9

Step-by-step explanation:

 -5x³ + 2x² + x - 7

- <u>(-2x³ + 6x² + 0 + 2)</u>     remember:  when you subtract, you 'add the opposite'

 -3x³ + (-4x²) + x + (-9)

8 0
3 years ago
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