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Roman55 [17]
3 years ago
13

HELP PLEASE pre-calc

Mathematics
1 answer:
nikitadnepr [17]3 years ago
5 0
the second choice, and the last choice are correct.

the first one, x can be any number.
the second one, x can be any number but not -1(the denominator cannot be 0)
the third one, x has to be ≥ 1/2, because 2x-1 cannot be negative.
the fourth one, x can be any number but not -1 or -4
the last one, x can be any number but not -3
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9
Svetradugi [14.3K]

Answer:

78

Step-by-step explanation:

do the equation backwards. 157 minus 1 equals 156, and 156 divided by 2 equals <u>78</u>. Hope this helps. pls mark brainliest

6 0
3 years ago
An automobile purchased for $39,000 is worth $1800 after 6 years. Assuming that the car's value depreciated steadily from year t
ad-work [718]

Answer:

3600

Step-by-step explanation:

1800+1800

7 0
3 years ago
Write (2x - 5)2 as a trinomial.
solniwko [45]

Answer:

4x^2-20x+25

Step-by-step explanation:

(2x-5)^{2} \\(2x)^2+2(2x)(-5)+(-5)^2\\4x^2-20x+25

7 0
3 years ago
Read 2 more answers
Solve for x 2/3=x/4<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B3%20%20%7D%20%20%3D%20%20%5Cfrac%7Bx%7D%7B4%20%7D%2
balandron [24]
To solve this, you cross multiply, then divide. In this case, we multiply 4 and 2, then divide by 3.

4 x 2 = 8
8 / 3 = 2.66

So, x is 2.66
3 0
3 years ago
689x+47x-89 dose anyone know how to solve this?
Korvikt [17]

Answer:

736x-89

Step-by-step explanation:

i think all you can do here is add the numbers that have an X in them so adding 689x+47x=736x and you leave the 89 so it becomes 736x-89

4 0
2 years ago
Read 2 more answers
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