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Zarrin [17]
3 years ago
14

A different camera is selling for $7.50 off the regular price. It was marked down 15%. A student used the equation:

Mathematics
2 answers:
Debora [2.8K]3 years ago
7 0

Answer:

The original price is $50. The student's mistake in the equation is that he should have done 7.5/0.15

The student should not have multiplied, instead divided. He also didn't put 15 in a decimal form, which would have messed the whole equation up.

aleksley [76]3 years ago
4 0

Answer:

The student should have divided the discounted amount by the percent. The percent should have been written as a decimal.

Step-by-step explanation:

that is what it says in the simple reponse

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musickatia [10]
Consider c as the cost of the widget so that our given equation is
c = 0.1w^2 + 20w
Take the derivate of the equation.
d/dt (c = 0.1w^2 + 20w)
dc/dt = 0.2w + 20
Given dc/dt = $16000 per month, the number of widgets would contain:
16000 = 0.2w + 20
-0.2w = 20 - 16000
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w = 79900 widgets
5 0
3 years ago
Which equation shows the correct use of the Distributive Property? −4(3/2x−1/2)=−15
loris [4]

Answer:

D

Step-by-step explanation:

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4 years ago
Idk if someone wants to help to solve this but- it’s worth a try I think it’s 15 points or so and I’ll mark brainliest to first
Anastaziya [24]

Answer:

Part 3: 9 Dogs

Step-by-step explanation:

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3 0
3 years ago
Atoms of which two elements have a combined total of 34 protons
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Answer:

Option b

Step-by-step explanation:

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Total:-

\\ \sf\longmapsto 20+14=34

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