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Julli [10]
3 years ago
6

10x^3 y^-5 z^-2 if x=3 y=2 and z=5 express your answer as a reduced fraction

Mathematics
1 answer:
sineoko [7]3 years ago
7 0

Answer:

\large\boxed{\dfrac{27}{80}}

Step-by-step explanation:

Put x = 3, y = 2 and z = 5 to the given expression 10x^3y^{-5}z^{-2}:

10(3^3)(2^{-5})(5^{-2})\qquad\text{use}\ a^{-n}=\dfrac{1}{a^n}\\\\=\dfrac{10(27)}{(2^5)(5^2)}=\dfrac{270}{(32)(25)}=\dfrac{270}{800}=\dfrac{27}{80}

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STALIN [3.7K]

The statement more kids prefer pepperoni pizzas than other types of pizzas is correct. Based on the data given, the option pepperoni has the highest number of votes among the kids surveyed compared to cheese and supreme as their favorite type of pizza.

5 0
3 years ago
The probability that a plane departs on time at a certain airport is .87 The probability that a plane arrives on time given it d
sleet_krkn [62]

Answer:

0.9355

Step-by-step explanation:

What we will use here is conditional probability formula.

let A be the event that the plane departs on time

and B be the event that it arrives on time

P(A) = 0.87

P(B|A) = 0.93

P(B) = ?

P(A n B) = ?

Mathematically;

P(B|A) = P(B nA)/P(A)

0.93 = 0.87/P(A)

P(A) = 0.87/0.93

P(A) = 0.935483870967742

which is 0.9355 to four decimal places

7 0
3 years ago
The selling price of an item is ​$650. It is marked down by ​%10, but this sale price is still marked up from the cost of ​$450.
Hoochie [10]

Answer:

nothing

Step-by-step explanation:

You get nothing because it would make -43256742984

7 0
3 years ago
Read 2 more answers
Can you help me with this question please?
AfilCa [17]

Answer:

(1, -3)

Step-by-step explanation:

You can see where the two lines intersect - that's the solution.

5 0
2 years ago
What kind of line is y=3? horizontal, vertical,slanted?
Firdavs [7]

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