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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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Estimate the value of 9.9 squared 2 x 1.79
Mekhanik [1.2K]

Answer: 180

Step-by-step explanation: 9.9 squared by 1.79 is 180

5 0
3 years ago
One angle of a right triangle measures 60°. The side opposite this angle measures 15 inches.
Delicious77 [7]

Step-by-step explanation:

To solve this question I would use the sin rule.

The sin rule states that

\frac{a}{ \sin(a) }  =  \frac{b}{ \sin(b)  }

Therefore if you substitute in your numbers you get:

\frac{a}{ \sin(90) }  =  \frac{15}{ \sin(60) }

If you rearrange that you get:

a =  \frac{15}{ \sin(60) }  \times  \sin(90)

Therefore a = 17.3 Inches (to 3 sf)

This can also be done with basic trigonometry where you would get

\sin(60)  =  \frac{15}{h}

Rearranging to

h =  \frac{15}{ \sin(60) }

meaning the answer is 13.7 inches

6 0
4 years ago
Read 2 more answers
I need help on this too please I'm literally struggling
Orlov [11]
The probability is 0.2256 or 22.56% chance i think
7 0
3 years ago
HELP <br> what are the coefficients of 7x^4-9x^3+2x^2
Nikitich [7]

In this case, whenever you see a number directly in front of x, multiplying itself by/with x, it's a coefficient.

That applies to the numbers 7, 9, and 2 if I'm reading this correctly. Hope this helps!

6 0
3 years ago
Math
lozanna [386]

Answer:

1. x=6

2. C <-26

3. p<6

4. -5x-44

Step-by-step explanation:

1. 2x = 3(x-2) - 3(x-6)

Distribute

2x= 3x-6 -3x+18

Combine like terms

2x =12

Divide by 2

2x/2 =12/2

x=6


2. C+6<-20

   Subtract 6 from each side

C+6-6 < -20-6

C <-26


3. -5p > -30  

Divide by -5.  Remember to flip the inequality when dividing by a negative

-5p/-5 < -30/-5

p<6


4. -4 - 5(X+8)

Distribute

-4 -5x-40

Combine like terms

-5x-44

6 0
4 years ago
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