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3 years ago

Paul has a collection of nickels and

Mathematics

1 answer:

VARVARA [1.3K]3 years ago

4 0

Answer:

#nickels = 50

#dimes = 100

Step-by-step explanation:

system of equations:

n + d = 150

.05n + .10d = 12.50

let n = '150 - d' and substitute this into the second equation

.05(150-d) + .10d = 12.5

7.5 - .05d + .10d = 12.5

.05d = 5

d = 5/.05

d = 100

n = 50

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Step-by-step explanation:

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3 years ago

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Mnenie [13.5K]

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3 years ago

A cylindrical can and a cone-shaped paper cup have the same radius and weight. If you use the cone to fill the van with water ho

Marta_Voda [28]

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3 years ago

A solar panel dealer acquires is used panel for $9,000, with terms FOB shipping point. Compute total inventory cost assigned to

malfutka [58]

Answer:

Total inventory cost is $9,965.

Step-by-step explanation:

The terms free on board FOB shipping point implies that the delivery of a good is taken by the buyer after it left the supplier's shipping dock. Therefore, any other relevant cost incurred afterwards will be paid by the buyer.

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3 years ago

23. * MULTIPLE CHOICE Which is the correct factorization of -45x^2 + 20y^2

skad [1K]

Answer:

c)-5(3x+2y)(3x-2y)

Step-by-step explanation:

1) lets find out if -45 and 20 have a GCF

-45 and 20 are both dividable by -5 so

-5(9x^2-4y^2)

1) you can see that 9 and -4 are perfect square so:

-5(3x+2y)(3x-2y)

Recheck:

1) lets use FOIL to see if this is right(if its right we will get back our original equation)

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hope this helps!

7 0

3 years ago