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icang [17]
2 years ago
5

Giving brianliest for BOTH answers! <3

Mathematics
1 answer:
Vaselesa [24]2 years ago
8 0
Answers would be D and C im pretty sure
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A measuring wheel is used to calculate the length of a path. The diameter of the wheel is 8 inches. If the wheel rotates 15 time
Oksi-84 [34.3K]
To fint the length first one must find circumference to do that we use the formula D*Pi (diameter times Pi. Diameter = 8 Pi is the constant of 3.1415
so. 8*3.1415 = appox 25.1327. cow that we have  circumference we should multiply by the amount of times the wheel rotates (15)
so. 15*251327 = appox 376.9911in now convert to feet. 12 in = 1 foot so divide by 12
so 376.9911 / 12 = about 31.4
round down to 31 feet
8 0
2 years ago
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
2 years ago
PLEASE HELP!! THANK YOU &lt;3
Natalija [7]

Answer:

what did you need to know :(

3 0
2 years ago
What is the slope of the line through (-5,-2) and (-1,-10)?
Varvara68 [4.7K]

Answer:

m=-2

Step-by-step explanation:

plug in the points in the formula y2-y1/x2-x1

I suggest getting m a t h w a y its a website and app thats useful.. and good.. and I like it

8 0
3 years ago
Read 2 more answers
Solve it. 2x=26 Find the value of x.​
EastWind [94]

Answer:

\sf\longmapsto \: x = 13

Step-by-step explanation:

\sf\longmapsto \: x = 26 \div 2

\sf\longmapsto \: x =1 3

5 0
2 years ago
Read 2 more answers
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