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Ket [755]
3 years ago
11

Evaluate x 1 - x -1 + x 0 for x = 2 a) 0 b)1/2 c)1 1/2 d)2 1/2

Mathematics
1 answer:
laiz [17]3 years ago
6 0
To solve, substitute the values of x with 2.
(2)^1 - (2) - 1 + 2^0 = 0.
The answer would be a)
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on the first of january 2014, carol invested some money in a bank account. The account pays 2.5% interest per year. On the first
almond37 [142]

Answer: £23,360

Step-by-step explanation:

You can use algebra to solve this.

Assume that the original investment is x.

In the beginning of 2015 the balance had increased by 2.5% which is denoted as:

= 1.025x

Carol then withdrew a thousand:

= 1.025x - 1,000

This value then increased by 2.5% again by the beginning of 2016:

= 1.025 * (1.025x - 1,000)

Relevant expression therefore is:

1.025 *(1.025x - 1,000) = 23,517.60

1.025x - 1,000 = 23,517.60/1.025

1.025x = ‭22,944‬ + 1,000

x = 23,944/1.025

x = £23,360

8 0
3 years ago
Evaluate 3x + 4y when x = 2 and y = 5
RideAnS [48]

Answer:

26

Step-by-step explanation:

3*2+4*5=6+20=26

3 0
2 years ago
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Complete the square: x^2-8x+21=6<br><br> Please show work
mina [271]

Answer:

x=5 and 3

Step-by-step explanation:

x^2-8x+21=6

x^2-8x+21+16=6+16

(x-4)^2=1

(x-4)=±1, x=5 and 3

5 0
3 years ago
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If it costs $55 for 20 people to go rent a movie at red box how much does it cost per person?​
marusya05 [52]
55/20 = 2.75
It costs $2.75 per person
4 0
2 years ago
Function or no a function
marishachu [46]

Answer:

Not a function

Step-by-step explanation:

If it was a function there should be only one values for every x, in this case there is two values for x=0. Doesn't pass the vertical test.

7 0
2 years ago
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