2 years ago

How can I solve for X in this Equation? -5 < X < 0

Mathematics

1 answer:

V125BC [204]2 years ago

8 0

Answer:

consider the < as = signs

and take -5 to the other side making it a +

x<0+5

x<5

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A collection of dimes and nickels is worth $8.40 there are 106 coins how many of each are there

kotegsom [21]

There are 62 dimes and 44 nickels.

N + D = 106 (There are 106 coins in all.)
1 nickel = 5 cents.
1 dime = 10 cents.
5*N + 10*D = 840 ($8.40 = 840 cents)
N + D = 106 -------(1)
N = (106 - D)
5*N + 10*D = 840 ---------(2)
5*(106-D) + 10*D = 840
530 - 5*D + 10*D = 840
5*D = 840 - 530
5*D = 310
D = 310/5 = 62
Eq(1) N + D = 106
N + 62 = 106
N = 106 - 62
N = 44

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3 years ago

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Andre45 [30]

Answer:

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