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lesya692 [45]
3 years ago
8

Evaluate the expressions for when x=-1, y=3, z=-2 z²+x²-y and x²y²z²

Mathematics
1 answer:
Vika [28.1K]3 years ago
4 0

Step-by-step explanation:

z² +x² - y= -2²+ -1² - 3

4+ 1 - 3= 2

x²y²z²= -1²× 3²× -2²

1× 9× 4= 36

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What is 27/8 in simplest form
iren [92.7K]
3 3/8. To figure this out, figure out how many times 8 goes into 27.

8 goes into 27 three times.

Now, multiply 8 and three together to figure out how many eights there are in 3.

3 = 24/8

There are still 3/8 remaining.

Your answer would be
3 3/8.

Message me if you need any help! Hope this helped
3 0
3 years ago
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Outside a​ home, there is a 7​-key keypad numbered 1 through 7. The correct five​-digit code will open the garage door. The numb
julia-pushkina [17]

Answer:

a: 16807

b: 0.0000595

Step-by-step explanation:

(a): We have 7 possibilities of numbers, and we need to choose 5 numbers that can repeat. So, for each of the 5 numbers, we have 7 possibilities. To determine how many codes are possible, we just need to multiply the number of possibilities of each of the 5 numbers, so we have 7x7x7x7x7, or 7^5, which is 16807 possibilities.

(b): to put the correct code in the first try, we need to find the exact combination (just one combination) among these 16807 possibilities, so the probability is 1/16807, which is 0.0000595, or 0.00595%.

8 0
3 years ago
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Tell whether this function is quadratic. {(10, 50), (11, 71), (12, 94), (13, 119), (14, 146)} .
irga5000 [103]

When we have consecutive values, f(10), f(11), f(12), f(13), f(14), we can make a difference table to determine the degree of f as a polynomial.  A quadratic will have a constant second difference:

x         10  11    12    13   14

f(x)       50 71  94  119  146

1st diff    21   23  25  27

2nd diff      2    2    2

We got a constant second difference, so f is a polynomial of degree two.

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6 0
4 years ago
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ICE Princess25 [194]
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8j+j=72
Then, add like things, which would be 8j and j (aka 1j) to get:
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Finally, divide both sides by 9 to get the answer, which is:
j=8
5 0
3 years ago
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Dimas [21]

Answer:

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Step-by-step explanation:

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