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Strike441 [17]
2 years ago
11

A book store offers a sale on a new book. The sale is "buy two of the books and get the third book free." Tommy pays $26 for thr

ee of the books. What is the average amount of money that Tommy saved on each of his three books due to the sale? Round to the nearest cent.
Mathematics
1 answer:
Molodets [167]2 years ago
3 0

Answer:

Salvo en cada library 4.33

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What is a rational number?
MAVERICK [17]

In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number.

4 0
3 years ago
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What is the true solution to the equation below? In e^in x + in e^in x^2 = 2 in 8
mariarad [96]
To solve the given equation, w need to review some rules:
(1) \ ln \ e = 1 \\ 
(2) \ ln \  b^{a} = a*ln \ b \\
(3) \ ln \ a + ln \ b = ln \ (ab) \\
(4) \ ln \ a - ln \ b = ln \  \frac{a}{b}  \\

The given equation is :
ln \  e^{ln \ x} + ln \  e^{ln \  x^{2}} = 2 \ ln \ 8
ln \ x * ln \ e + ln \  x^{2} * ln \ e = 2 \ ln \ 8  ⇒⇒⇒⇒ rule (2)
ln \ x + ln \  x^{2} = ln \  8^{2}  ⇒⇒⇒⇒ rule (1) and rule (2)

ln \ ( x*  x^{2} ) = ln \ 64          ⇒⇒⇒⇒ rule (3)
removing the nature logarithm from both sides

x^{3} = 64 =  4^{3}
∴ x = 4


So, the correct answer is option (2) ⇒⇒⇒⇒ x = 4


5 0
2 years ago
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Evaluate:<br> -9 + 25 - (-10) + (-6)
Minchanka [31]
-9 is a negative number, so plus 25, it would be 16. The minus sign and the negative sign of -10 cancel out, so it is plus 10, ending up with 26. Finally, the + and - becomes negative (positive times negative equals negative), so it is -6 and you’ll end up with a final answer of 20.
4 0
3 years ago
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What is the constant of proportionality?<br> 13<br> 39<br> 42<br> 78
Nana76 [90]
The constant of proportionality is 13
6 0
3 years ago
mr.masons height is at most 4 inches more than twice his daughters height.Mr.masons height is 70 inches
nadezda [96]
M < = 2d + 4
m = 70

70 < = 2d + 4
70 - 4 < = 2d
66 < = 2d
66/2 < = d
33 < = d...or d > = 33

so the daughter is at least 33 inches

4 0
2 years ago
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