How many mg of a metal containing 62 percent nickel must be combined with 4 mg of pure nickel to form an alloy containing 78 percent nickel? Which of the following equations could be used to solve this?
Answers
Answer:
3.29 milligrams of a metal containing 62 percent nickel must be combined with 4 mg of pure nickel to form an alloy containing 78 percent nickel.
Step-by-step explanation:
To determine how many mg of a metal containing 62 percent nickel must be combined with 4 mg of pure nickel to form an alloy containing 78 percent nickel, the following calculations must be performed:
50 + 0.62X = 78
0.62X = 78 - 50
0.62X = 28
X = 28 / 0.62
X = 45.16
100 - 45.16 = 54.84
54.84 = 4
45.16 = X
45.16 x 4 / 54.84 = X
180.64 / 54.84 = X
3.29 = X
Therefore, 3.29 milligrams of a metal containing 62 percent nickel must be combined with 4 mg of pure nickel to form an alloy containing 78 percent nickel.
Answer:
C
Step-by-step explanation:
a(0.62)+4(1.00)/a+4+78/100
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Step-by-step explanation:
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HELP PWEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE!!!!
A rectangular prism has a base with a length of 45 meters and a width of 11 meters. The height of the prism measures twice its width. What is true about the rectangular prism?
The height of the prism measures( )meters, so its volume is ( )cubic meters.
Answers
Answer:
The height of the prism measures 22 meters
The volume of the prism measures 10,890 cubic meters.
Step-by-step explanation:
The height is twice the width of the prism.
The prism's width is 11 meters.
2 x 11 = 22
The volume of a rectangular prism is calculated as:
V = l x w x h
So, the volume is:
V = 45 x 11 x 22
The volume is 10,890 cubic meters.
Hope this helps!
Answer:
Height = 22 Volume = 10890
Step-by-step explanation:
The width is 11 so multiply by 2 to get 22.
Then just do 45 x 11 x 22 which is 10890.
please help I will appreciate it
Answers
Answer:
c. no solution
Step-by-step explanation:
i hope this helps :)
Answer:
c
Step-by-step explanation:
they are parallel so they won't intercept. therefore they won't have a solution
What is the surface area of this rectangular prism?
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Answer:
the exact answer is 250m2
Step-by-step explplanation:
3*7=21
21*2=42
13*2=26
13*7= 91
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182+26+42 = 250m3
which one is correct please help
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Answer:
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Step-by-step explanation:
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Step-by-step explanation:
Naomi asked several classmates how much cash they had in their pocket. She recorded the data below:
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Step-by-step explanation:
PLEASE SHOW WORKK PLZZZZ HELLPPPP:))
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Step-by-step explanation:
The scale of a map in Florida is 1.25 inches = 100 miles. Orlando and Miami are 235 miles apart. How far apart are Orlando and Miami on the map? Round to the nearest hundredth
Answers
Answer:
2.94 inches
Step-by-step explanation:
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rounded to the nearest hundredth is 2.94
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^ is exponent btw
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Answers
Answer:
∠1 - 40°
Step-by-step explanation:
∠1 - 40°
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b/c an exterior (outside) angle is equal to the two most isolated / farthest angles added. The two most is angles are 105° and 35°, add them and get 140°.
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∠4 -
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Answers
Step-by-step explanation:
21<w+6
honestly I think im wrong because I didn't really get the question, sorry
Answer:
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Step-by-step explanation:
We are given the expression "21 is less than w + 6" and are asked to solve this inequality for "w".
To do so, we first need to create the actual inequality, if 21 is less than w + 6, then the sign we should use is the less than sign (<).
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21 < w + 6
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Step-by-step explanation:
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Answer:
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