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3 years ago

15

If Amy Earns 10 Dollars An Hour And She Earned 97.50, How Many Hours Did She Work?

1 answer:

Alborosie3 years ago

3 0

Answer:

9.75 hours or

9 hours and 45 minutes

Step-by-step explanation:

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What is the completely factored for of x^2-16xy+64y^2

Elden [556K]

Answer:

(x-8y)^2

Step-by-step explanation:

I used a calculator

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3 years ago

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Which are undefined?<br>sec(-pi/)<br>csc(3pi)<br>cot(7pi/2)<br>csc(-3pi/2)<br>cot(5pi/3)

maxonik [38]

Step-by-step explanation:

after you draw a unit circle you will find the answer

cosec(3pi)=1/sin(3pi)

sin3pi=sinpi=0

so cosec3pi=1/0 which is undefined.

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Subtract 715 from the sum of 810 and 189

hodyreva [135]

810+189-715= 284. the answer is 284

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Solve the system by substitution.<br> 4y =<br> 5x -10y =-50

Trava [24]

Answer:

$x = -20 ; y =-5$

Step-by-step explanation:

Eqn. 1 ----> 4y = x

Eqn. 2 ----> 5x-10y = -50

(Simplifying eqn.2 further)

$=>5(x-2y)=-50$

$=>x-2y=\frac{-50}{5} =-10$

(Substituting the value of x from eqn. 1)

$=>4y-2y=-10$

$=>2y=-10$

$=>y =\frac{-10}{2} =-5$

Now, substituting the value of y in eqn. 1 ,

$x = 4*(-5)=-20$

7 0

3 years ago

A bag contains five red marbles, four blue marbles, and four yellow marbles. You randomly pick a marble. What is the probability

Vikentia [17]

n(s)= 5+4+4=13

n(e)= red + blue

=5+4

=9

so, p(e) = n(e)/n(s)

p(e)= 9/13

=0.69

it's your answer

it will help.

7 0

3 years ago