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saw5 [17]
3 years ago
12

ryan pays $3.78 for a bag of 14 tangerines. find the unit price in dollars per tangerine. if necessary round your answer to the

nearest cent
Mathematics
1 answer:
sveta [45]3 years ago
8 0

Answer: $3.70

Step-by-step explanation: To find unit price per, just divide total units by total price. So in this case dividing 14 ( total tangerines) by 3.78 ( total price paid) gives us the price per tangerine, which is $3.7037, or rounded to $3.70

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For the reaction 2Fe + O2 → 2FeO, how many grams of iron oxide are produced from 42.4 mol of iron?
Butoxors [25]

In the balanced reaction

2 Fe + O₂   →   2 FeO

2 moles of iron (Fe) react with 1 mole of molecular oxygen (O₂) to produce 2 moles of iron oxide (FeO). The ratio of Fe to FeO is 1-to-1, so if one starts with 42.4 mol of Fe, one will end up with the same amount of FeO, 42.4 mol.

Look up the molar mass of Fe and O:

• Fe = 55.845 g/mol

• O = 15.999 g/mol

Then the molar mass of FeO is approximately 71.835 g/mol, and so the mass of 42.4 mol of FeO is

(42.4 mol) × (71.835 g/mol) ≈ 3050 g

8 0
3 years ago
Simplify.<br><br> 4 x (8 + 5) + 9 can someone help me out plz
Xelga [282]

Step-by-step explanation:

4x(8+5)+9

=52x+9

=52x+9

Description:

The first step is to simplify the equation provided. So in this case the equation is 4 x (8 + 5) + 9.  After that you will get your answer as =52x+9. So in this case 4 x (8 + 5) + 9 = =52x+9.

Answer: =61

Hope this helps.

8 0
2 years ago
Read 2 more answers
What is the component form of the vector represented by 2a when a⃗ =〈−2,3〉?
Paladinen [302]

Answer:

\vec v = 2\cdot \vec a = \langle -4,6 \rangle

Step-by-step explanation:

Let \vec a = \langle -2, 3 \rangle, we need to determine \vec v = 2\cdot \vec a, which can be found by applying the following property:

\alpha \cdot \langle x,y \rangle = \langle \alpha \cdot x, \alpha \cdot y\rangle, \forall \,\alpha,x,y\in \mathbb{R} (1)

Then,

\vec v = 2\cdot \langle -2,3 \rangle

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8 0
3 years ago
What are the factors for the expression 4x^2-5x-9
vagabundo [1.1K]

Answer:

4x^2 and 5x or 4 and 5, not sure how it goes, but it's for sure 4 and 5

Step-by-step explanation:

a factor is something which is multiplied by something else soooo I'd say it's 4x^2 and 5x because they are supposed to be multiplied by whatever x is

4 0
3 years ago
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Given sin(theta)= 12/13 in quadrant 1 determine sec(theta) PLS HELP ASAP
Genrish500 [490]

Answer:

Step-by-step explanation:

in quadrant 1 cos and sec are positive.

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secθ=13/5

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3 years ago
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