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ki77a [65]
3 years ago
9

Simplify and determine the coefficient of (-x)(5y)(-2x).

Mathematics
2 answers:
Alexeev081 [22]3 years ago
4 0
I'm sure the answer is 
10 x^{2}y

hope this helps :) 


inn [45]3 years ago
4 0

Answer:

The coefficient of (-x)(5y)(-2x)=10x^2y  is 10.

Step-by-step explanation:

Given : Expression (-x)(5y)(-2x)

To find : Simplify and determine the coefficient of expression ?

Solution :

Expression (-x)(5y)(-2x)

Simplifying the expression by multiplying,

(-x)(5y)(-2x)=10x^2y

Multiplying two negative number gave positive number.

Coefficient is defined as the number multiply by a variable or term.

In (-x)(5y)(-2x)=10x^2y

The coefficient is 10.

Therefore, The coefficient of (-x)(5y)(-2x)=10x^2y  is 10.

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HELP ASAP An office employee ears $600 weekly. Find the equivalent earnings if paid biweekly, semimonthly, monthly, and annually
beks73 [17]

1200~bi-weekly

1200~semimonthly

2400~monthly

31,200~annually

6 0
3 years ago
Answer question below
Stels [109]

Answer:

edge of cube = root 13.5/6 = 1.5

volume of cube = (Edge of cube)^3= (1.5)^3 = 3.37500 m^3

8 0
3 years ago
Two cyclists, Alan and Brian, are racing around oval track of length 450m on the same direction simultaneously from the same poi
skelet666 [1.2K]

Answer:

Alan: 200 m/min

Brian: 150 m/min

Step-by-step explanation:    

Given : Two cyclists, Alan and Brian, are racing around oval track of length 450m on the same direction simultaneously from the same point. Alan races around the track in 45 seconds before Brian does and overtakes him every 9 minutes.

To find : What are their rates, in meters per minute?

Solution :

Let n represent the number of laps that Alan completes in 9 minutes.

Then n-1 is the number of laps Brian completes.

45 seconds = 3/4 minutes.

The difference in their lap times in minutes per lap is

\frac{9}{(n -1)}-\frac{9}{n} =\frac{3}{4}

Solving the equation we get,

\frac{9n-9n+9}{n(n -1)} =\frac{3}{4}

9\times 4=3\times n(n -1)

36=3\times n(n -1)

n^2-n-12=0

n^2-4n+3n-12=0

n(n-4)+3(n-4)=0

(n-4)(n+3)=0

n=4,-3

Neglecting n=-3

So, n=4

Then Alan's speed in m/min is

S=\frac{D}{T}

S_a=\frac{4\times 450}{9}

S_a=200 m/min

Brian completes 3 laps in that 9-minute time, so his rate is

S_b=\frac{3\times 450}{9}

S_b=150 m/min

Therefore, Alan: 200 m/min

Brian: 150 m/min

4 0
4 years ago
What are the values of X?
telo118 [61]

Answer:

37, 49

Step-by-step explanation:

Divide 74 by two to get the first x. 74 / 2 = 37

Subtract 77 from 126 to get the second x. 126 - 77 = 49

6 0
3 years ago
What is the solution of √x-5 = x-11
PIT_PIT [208]
Hey!


To solve x in this equation we must first add five to both sides to get \sqrt{x} on its own.

<em>Original Equation :</em>
\sqrt{x} - 5 = x - 11

<em>New Equation {Added 5 to Both Sides} :</em>
\sqrt{x} =x-6

Now we must square both sides of the equation.

<em>Old Equation :</em>
\sqrt{x} =x-6

<em>New Equation {Changed by Squaring Both Sides} :</em>
x= x^{2} -12x+36

And now we must solve the new equation.

Step 1 - Switch sides
x^{2} -12x+36=x

Step 2 - Subtract x from both sides
x^{2} -12x+36-x=x-x

Step 3 - Simplify
x^{2} -13x+36=0

Now we need to solve the rest of the equation using the quadratic formula.

\frac{-(-13)+ \sqrt{(-13) ^{2}-4*1*36 } }{2*1}

{13+ \sqrt{(-13)^{2}-4*1*36 }=13+ \sqrt{25}

\frac{13+ \sqrt{25}}{2}

\sqrt{25}=5

\frac{13+5}{2}

\frac{18}{2}

9

\frac{-(-13)- \sqrt{(-13) ^{2} -4*1*36} }{2*1}

4

<em>So, this means that in the equation \sqrt{x} -5=x-11,</em>  x = 9  <em>and  </em>x = 4.

Hope this helps!


- Lindsey Frazier ♥
4 0
3 years ago
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