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Deffense [45]
3 years ago
9

8. 2²=1o=0z=+The solutions areand​

Mathematics
1 answer:
natka813 [3]3 years ago
8 0

Step-by-step explanation:

the question is z²=1

taking square root on both sides

√z² = √1

the square root and the square cancel out each other

it gives

z=±1

that means either z=+1 or z=-1

so the solutions are 1 and -1

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Is x-1 a factor of x^5+2x^2-1
vazorg [7]

Answer: i think no cuz f(1)=2 but i am not sure

Step-by-step explanation:

5 0
3 years ago
Can the square of an integer be a negative number? Explain.
ivolga24 [154]

Answer: how ever no negative number can really have a square root however it is possile to wokr with a more incluesive set of number so i belive no

Step-by-step explanation:

5 0
3 years ago
A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the numb
Ugo [173]
To answer this item, we take the differential of the equation and equate to zero.
 
                  C(x) = 0.8x² - 256x + 25939

Differentiation,
                dC(x) = 1.6x - 256 
                 dC(x) = 1.6x - 256 = 0

The value of x from the derived equation above is 160. 

Thus, the number of machine to be made in order to minimize the cost should be 160. 
4 0
3 years ago
Read 2 more answers
Please help me. .....
wlad13 [49]

Answer:

24 pounds

Step-by-step explanation:

Step 1: Find out how many pens he bought

12 pens per pack

Charles bought 60 packs

60 packs x 12 pens = 720 pens

Step 2: Find out how much Charles spent

2.80 per pack

Charles bought 60 packs

60 x 2.80 = 168 pounds

Step 3: Find out how many pens Charles sold

Charles sold 2/3 of his pens

2/3 x 720 = 480

Step 4: Find out how manypens he sold

Charles sold the pens for 40p

40p x 480 = 19200p

Step 5: Convert pences to pounds

19200p = 192 pounds

Step 6: Find the profit

192 - 168 = 24 pounds

Step 7: Therefore statement

Therefore he mad 24 pounds of profit

6 0
3 years ago
What are the slope and the y-intercept of the linear function that is represented by the equation y - 9x-27?
kakasveta [241]

Answer:

the slope and the y-intercept of the linear function that is represented by the equation y = 9 x minus 27? The slope is –2, and the y-intercept is 9.

Step-by-step explanation:

hope this helps

6 0
3 years ago
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