3 years ago

Please help me I will give brainliest

Mathematics

1 answer:

nirvana33 [79]3 years ago

3 0

Answer:

potential to kinetic energy

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Which of these equations shows rust, Fe2O3, forming when oxygen, O2, reacts with iron, Fe? Question 10 options: 2Fe2O3 → 3O2 + 4

mrs_skeptik [129]

Answer:

The rusting of iron is represented by the equation 4Fe +3O2 --> 2Fe2O3.

Step-by-step explanation:

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4 years ago

√(25 - 10 √(3) + 3)<br> (not as a decimal)

nikitadnepr [17]

Answer:

$\huge\boxed{\sqrt{25-10\sqrt3+3}=5-\sqrt3}$

Step-by-step explanation:

$\sqrt{25-10\sqrt3+3}=(*)\\\\25=5^2\\3=(\sqrt3)^2\\10\sqrt3=(2)(5)(\sqrt3)\\\\(*)=\sqrt{5^2-(2)(5)(\sqrt3)+(\sqrt3)^2}\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=\sqrt{(5-\sqrt3)^2}\\\\\text{use}\ \sqrt{a^2}=|a|\\\\=|5-\sqrt3|=5-\sqrt3\\\\^{\text{because}\ 5>\sqrt3\to5-\sqrt3>0}$

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3 years ago

A pair of shoes is on sale for 90% off. If the original price is $37.00, what is the sale price?

hodyreva [135]

Answer:

3.70 The difference is 33.30

Step-by-step explanation:

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3 years ago

A 4-foot roll of plastic wrap costs $0.48. What is the price per inch?

Lapatulllka [165]

.1¢ || explanation: 1 ft=12 in, 4ft=48 in, 0.48 (divided by) 48 =0.1

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3 years ago

If y= 1/2x and x = -14 find y

Minchanka [31]

Answer:

y = -7

Step-by-step explanation:

y = 1/2x

x = -14 (given)

y = 1/2 × (-14)

= -7

4 0

3 years ago

Read 2 more answers

Please help me I will give brainliest ​

Please help me I will give brainliest