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Alenkinab [10]
2 years ago
12

The price paid for a $15 shirt after a 45% discount is applied​

Mathematics
2 answers:
Anarel [89]2 years ago
5 0

Answer:

$6.75

Step-by-step explanation:

15 times 0.45=6.75

Tamiku [17]2 years ago
3 0

Answer:

ur mom

Step-by-step explanation:

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Perfect square of u^2 - 14u + _
Rudiy27

The solution is in the attached file

5 0
2 years ago
Help and explain pllzz asap
Mnenie [13.5K]
T is greater than -15 because numbers after -15, like -16... are less than -15, so when its decreasing it gets lower. Since the questions says the temp stayed above -15, that means the temp could be -14...-13 and so on.
8 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
6x - 10y = -16<br><br> x + 20y = 19
Lena [83]
This may be the right answer: x=-1 y=-11/5
4 0
3 years ago
If 1/a, 1/b, 1/c are in Arithmetic Progress, show that 2ac/a+c.​
Iteru [2.4K]
  1. 1/b-1/a = 1/c-1/b [ since they are in arithmetic progress]
  2. 1/b+1/b = 1/c+1/a
  3. 2/b = (a+c)/ac
  4. 2ac = b(a+c)
  5. 2ac/(a+c) =b

6 0
3 years ago
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