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yarga [219]
3 years ago
11

While mining, Sandy found a large metal bar that weighed 32 grams. Sandy was also able to determine that the bar contained 75% c

opper. How many grams of copper are in the metal bar? Round your answer to the nearest whole number if necessary. x Clear Undo Redo​
Mathematics
2 answers:
Rus_ich [418]3 years ago
5 0

Answer:

40%

Step-by-step explanation:

make 20*5=100 , total, 8*5 which makes 40

xenn [34]3 years ago
5 0

Answer:

there would be 24 grams of copper.

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Lemur [1.5K]

Answer:

4/5 to the 5th power

Step-by-step explanation:

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3 years ago
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4(x-3)-(2x+5)=-3x-27
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4(x-3)-(2x+5)=-3x-27
4*x - 4*3 - 2x - 5 = -3x - 27
4x - 12 - 2x - 5 = -3x - 27
2x - 17 = -3x - 27
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enyata [817]

Answer:

31.581 grams rounded to the nearest tenth is 31.6

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An employee at a department store is stocking cell phone cases. He has a box of 80 cases. Among the 80 cases, 40 are black, 10 a
Salsk061 [2.6K]

Answer:

\sf \dfrac{203}{4108}

As a decimal = 0.05 (nearest hundredth)

Step-by-step explanation:

\sf Probability \ of \ an \ event \ occurring = \dfrac{Number \ of \ ways \ it \ can \ occur}{Total \ number \ of \ possible \ outcomes}

First pick:

\sf \implies P(pink)=\dfrac{30}{80}

As the case is NOT replaced, second pick:

\sf \implies P(pink)=\dfrac{30-1}{80-1}=\dfrac{29}{79}

As the case is NOT replaced, third pick:

\sf \implies P(pink)=\dfrac{29-1}{79-1}=\dfrac{28}{78}

Therefore,

\sf \implies P(pink \ and \ pink \ and \ pink)=\dfrac{30}{80} \times \dfrac{29}{79} \times \dfrac{28}{78}=\dfrac{203}{4108}

Answer as a decimal = 0.05 (nearest hundredth)

6 0
2 years ago
The diagram shows a circle with center C, a diameter RS, and an inscribed triangle RST.
snow_tiger [21]

Answer:

x = 26

Step-by-step explanation:

m<RTS = 4x - 14 (given)

Based on the inscribed angle theorem, the measure of the inscribed angle in a semicircle = right angle (90°)

Therefore,

4x - 14 = 90

4x - 14 + 14 = 90 + 14 (addition property of equality)

4x = 104

4x/4 = 104/4

x = 26

6 0
3 years ago
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