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Serjik [45]
3 years ago
14

Can some one please tell me the answer to this question

Mathematics
1 answer:
Mama L [17]3 years ago
8 0
Give me more points, and I will ;)
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If the mass of a material is 49 grams and the volume of the material is 7 cm^3, what would the density of the material be?
inysia [295]
The equation for density is:
density =  \frac{mass}{volume}

To help you remember - my teacher told us to remember "We <span>♡ density," and the heart stands for </span>\frac{m}{v}, or \frac{mass}{volume}. Cheesy, but it works!<span>
</span>
Back to the problem:
We know the mass if 49g and the volume is 7 cm^{3}, so plug these values into the equation for density:
density = \frac{mass}{volume}\\&#10;density = \frac{49\:g}{7\:cm^{3}} \\&#10;density = 7\:g/cm^{3}

Answer: The density is 7 g/cm^{3}
4 0
3 years ago
How you divide a decimal
Tom [10]
Easy you just divide it like a regular then put move the decimal to the left the number of times letters are behind it.
8 0
3 years ago
How does the value of a decimal changes as you move to the left or the right in a place value chart
icang [17]
If you move it to the left the number would increase so for example you had 2.3 and you move it to the left then it would be 23, so if you times it by tenth or hundredth then it would go to the left but if you divide then it would go down so moving to the right would get you 0.23
7 0
3 years ago
Company ABC produces widgets. They have found that the cost, c (x), of making x widgets is a quadratic function in terms of x. T
Dahasolnce [82]

The given function  is a quadratic equation. Any quadratic equation can be written in the form :

C(x)=ax^{2}+bx+c

The given points can be taken as (2,23) ,(4,55) and(10,247)

We form three equations with the given points

For point (2,23 ) the equation is

23   = 4a + 2b + c

For point (4,55) the equation is

55 = 16a + 4b + c

For point  (10,247) the equation is:

247 = 100a+10b+c.

Solving the three equations for a,b,c we have :

32 = 12a + 2b

  16 = 6a + b

and,

 192 = 84 a + 6b

 32 = 14a + b

Solving for a,b,c we have:

a=2  b=4   c=7

The quadratic equation is c(x)=2x^{2}+4x+7.

When x=8

c(x)=2(8)^{2}+4(8)+7= 167.]

Option C. $167 is the right answer.



8 0
3 years ago
Read 2 more answers
Need help with any of these questions 5,6,7,8 please please help me again I missed the lesson in class I need to show all my wor
PolarNik [594]
I won't give you the answers but to do unit rate you can use proportion an example is below

5 0
3 years ago
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