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Viefleur [7K]
2 years ago
14

Gold has a density of 19.3 ​ g/cm3 ​, it is often made into a bar called a gold ingot. A certain gold ingot has a volume 51.8 cm

³.
What is the mass of the gold ingot?
Mathematics
2 answers:
kkurt [141]2 years ago
8 0
The gold ingot would be 999.74 grams. if one centimeter cubed has a mass of 19.3, then 51.8 centimeters cubed would have a mass of 999.74 grams.
Inessa05 [86]2 years ago
6 0

Answer: 999.74 g

Step-by-step explanation:

Given: Density of gold = 19.3\ g/cm^3

The volume of a certain gold ingot =51.8\ cm^3

We know that the formula of density is :

\text{Density}=\frac{\text{Mass}}{\text{Volume}}\\\\\Rightarrow19.3=\frac{\text{Mass}}{51.8}\\\\\Rightarrow\text{Mass}=51.8\times19.3=999.74\ g

Hence, the mass of  the gold ingot = 999.74 g

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Has anyone done Exponential Growth and Decay (in mathematical models with application A) on sos or odysseware and gotten a prefe
Lilit [14]

Answer:

1) 62.5

2) 50

3) 75

4) 100

Step-by-step explanation:

1)

Because it has a half-life of 25 days, half of it will decay after 25 days.

After 25*4=100 days, there will be (1/2)^{4}=1/2^{4}=1/16 of it left.

So, 1000/16=\boxed{62.5}.

2)

Because it has a half-life of 25 days, half of it will decay after 25 days.

After 25*3=75 days, there will be (1/2)^{3}=1/2^{3}=1/8 of it left.

So, 400/8=\boxed{50}

3)

Because it has a half-life of 25 days, half of it will decay after 25 days.

After 25*2=50 days, there will be (1/2)^2=1/2^{2}=1/4 of it left.

So, 300/4=\boxed{75}.

4)

The only answer left is \boxed{100} grams. You can solve it the same way you solved the previous steps.

4 0
2 years ago
What is the y-value when x equals 7?<br> y = 310 - 25(x)
monitta

Answer:

y=135

Step-by-step explanation:

To find the solution, we must put 7 in for x and solve, as shown:

y=310-(25)(7)\\y=310-175\\y=135

6 0
3 years ago
Read 2 more answers
Please help me I don't know how to do this
zhenek [66]
It is 9 squares. Todayyyyy

7 0
3 years ago
Read 2 more answers
I really need help I’m very confused
Vaselesa [24]

Answer:

10: -11n^5

12: 6k^2 -6k+7

Step-by-step explanation:

Ok so what your gonna do is add or subtract the ones with the same exponent.

so -15+4= -11 since they are both n^5 you can add them so your answer is:

-11n^2

now you have 8k^2-k-5k+7-2k. so you are gonna rearrange them so the same exponents are together.(keep the sign in front in front, if no sign it is positive)

8k^2-2k^2-5k-k+7

add like exponents

6k^2-6k+7

6 0
3 years ago
The measurement, y, varies directly with regard to another value, x. If y = 9 and x = 24, find x for y = 25. 9.4 50 66.7
ale4655 [162]

Answer:

<u>The correct answer is C. 66.7</u>

Step-by-step explanation:

1. y varies directly with regard to x

y = 9 and x = 24

If y = 25, what is the value of x?

2. For finding that value of x, first of all, we should understand what happened to y.

If y moves from 9 to 25 it means that y has been multiplied by 2.77, using this simple division

25/9 = 2.777

3. And we should use that same number or value to calculate the new value of x

If x was 24, now the new value of x is 24 * 2.777

24 * 2.777 = 66. 67 or 66.7 (rounding to just one decimal)

<u>The correct answer is C. 66.7</u>

4 0
3 years ago
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