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anzhelika [568]
2 years ago
14

Your friend gave you a gift card for your birthday. You use it to buy a DVD for

Mathematics
2 answers:
Elza [17]2 years ago
7 0
The answer is $60.00

DIA [1.3K]2 years ago
4 0
120 or it's 60 (: i think because if it's' 60 then you just add the 15 to 45 but if it's 120 then you multiply 60 ny 2

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A tortoise is walking in the desert. it takes 3 minutes to walk 4.8 meters. what is its speed?
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2 years ago
Prove that 1=2 with well arranged steps and justify each step
Shtirlitz [24]
<span>Justification Step 1: Let a = b. Step 2: Then a^2 = ab , Step 3: a^2 + a^2 = a^2 + ab , Step 4: 2a^2=a^2 + ab, Step 5: 2a^2 - 2ab = a^2 + ab - 2ab, Step 6: and 2a^2 - 2a^b = a^2 + ab - 2ab . Step 7: This can be written as 2(a^2 - ab) = 1(a^2 - ab) , Step 8: and cancelling the (a^2 - ab) from both sides gives 1 = 2.</span>
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2 years ago
Aeen is drinking a beverage that has a pH of 3.3. Marien is drinking a beverage that has a pH of 2.7. About how many time the hy
AlekseyPX
The pH value of a solution is a logarithmic function of the hydronium ion concentration in the solution. Since we are given the pH foe both we can easily calculate the H+ ion concentration as follows:

Aeen
3.3 = -log (H+)
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Marien
2.7 = - log (H+)
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Therefore, Aeen's drink is 0.07/0.04 or 2 times more hydrogen ion concentration than Marien's drink.
3 0
2 years ago
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Write a situation in which positive and negative numbers are used to describe values that have opposite meaning. What does 0 rep
irina [24]

Answer:

0 is neutral when used in integers. When two integers are the same distance away from 0, on opposite sides of the number line, they are opposites.

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Step-by-step explanation:

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2 years ago
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