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NISA [10]
3 years ago
8

Jim wants a game that cost $35.95. There is a 20% sale going on in the store, how much will he pay for the game?

Mathematics
1 answer:
Kazeer [188]3 years ago
4 0

Answer:

28.76

Step-by-step explanation:

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Which expression is a difference of squares with a factor of 2x + 5? 4x2 + 10 4x2 – 10 4x2 + 25 4x2 – 25
Shtirlitz [24]

Answer:

  4x^2 -25

Step-by-step explanation:

The other factor of the difference of squares is the "conjugate" of the given one: (2x -5). Then their product is ...

  (2x +5)(2x -5) = (2x)^2 -(5)^2 = 4x^2 -25

5 0
3 years ago
Read 2 more answers
Suppose that 1 kg of Sodium-24 is reduced to 0.0156 kg in 90 hours. What is the half-life, in hours, of Sodium-24?​
N76 [4]

Answer:

14.99 hours

Step-by-step explanation:

The formula for half-life is given as,

R/R' = 2ᵃ/ᵇ...................... Equation 1

Where R= Original mass of sodium-24, R' = mass of Sodium-24 after disintegration, a = Total time taken for sodium-24 to disintegrate, b = half-life of sodiun-24.

Given: R = 1 kg, R' = 0.0156 kg, a = 90 hours

Substitute into equation 1 and solve for b

1/(0.0156) = 2⁹⁰/ᵇ

Taking the log of both side

log[1/(0.0156)] = log(2⁹⁰/ᵇ)

log[1/(0.0156)] = 90/b(log2)

90/b = log[1/(0.0156)]/log2

90/b = 6.0023

b = 90/6.0023

b =  14.99 hours

b = 14.99 hours.

Hence the half-life of Sodium-24 is 14.99 hours

7 0
3 years ago
Whats 4x=28? whats the x for the answer?
Alik [6]
76 is the answer for x.
5 0
3 years ago
5/7 x 21/25 what is the answer to this???!!?!?!!!?
lbvjy [14]
Multiply the tops and multiply the bottoms
Aka
5*21
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7*25

And simplify
5 0
3 years ago
Solve the equation. -0.2(30) + 0.5x = 0.2(30 + x)
Travka [436]

Answer:

x=40

Step-by-step explanation:

4 0
3 years ago
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