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timofeeve [1]
4 years ago
14

Please help!! Show work please!!

Mathematics
2 answers:
wel4 years ago
3 0

Answer:

 x^3

-------------            

  16 y^5 z

Step-by-step explanation:

4^-2 x^3 y^-5 z^-1

negative exponents flip

x^3                            x^3

-------------            = -------------

4^2  y^5  z^1           16 y^5 z

Nonamiya [84]4 years ago
3 0

4^{-2}x^3y^{-5}z^{-1}=\dfrac{1}{4^2}\cdot x^3\cdot\dfrac{1}{y^5}\cdot\dfrac{1}{z^1}=\boxed{\dfrac{x^3}{16y^5z}}\\\\Used:\\\\a^{-n}=\dfrac{1}{a^n}

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Mrs Jenkins is buying pizza for the soccer team after practice. She estimates that each player will eat three eighths if a pizza
____ [38]

Answer:

6 3/8 pizzas

Step-by-step explanation:

She estimates that each player will eat three eighths if a pizza and there are 17 players.

Therefore, we have to multiply 3/8 by 17:

3 / 8 * 17 = 6.375 pizzas = 6 3/8 pizzas

They will eat 6 3/8 pizzas.

3 0
3 years ago
There are 88 Keyes on a piano.some keys are black and some keys are white .
shepuryov [24]
It would be C.88-x and there are 36 black keys on an 88 key piano

5 0
3 years ago
Read 2 more answers
A quadratic equation is shown below: 3x2 − 16x + 2 = 0 Part A: Describe the solution(s) to the equation by just determining the
aleksandr82 [10.1K]
<span>i think you mean discriminant in part A  </span>
Δ=b^2-4ac=256-4*2*3=256-24=232
it is positive so it has two answers.
Part B
you can find Δ
Δ=b^2-4ac=9-4*9*(-2)=81
x1=-3+9/18=6/18=1/3
x2=-3-9/18=-12/18=-2/3



3 0
3 years ago
Which expressions are polynomials??
GrogVix [38]

Answer:

Options (1) and (2)

Step-by-step explanation:

Properties of a polynomial,

1). A polynomial having division by a variable can't be defined as a polynomial.

  Example:

   (y² + \frac{x}{1+x})

2). A polynomial can't have a negative exponent.

  Example : (x^{-2}+y-6)

3). Polynomials don't have the radicals.

  Example : y² + x√3

4). A polynomial can't have a fraction exponent.

   Example : x^2+x^{\frac{1}{2}}-1

By these properties, Options (3) and (4) are not the polynomials.

Options (1) and (2) are the correct options.

5 0
3 years ago
A car traveled 360 km in 6 h. A train traveled 400 km in 8 h. A boat traveled 375 km in 5 h. Which had the fastest average speed
Nezavi [6.7K]

Answer:

boat 75

Step-by-step explanation:

Car--360/6=60

Train--400/8=50

Boat--375/5=75

7 0
3 years ago
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