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notsponge [240]
3 years ago
12

A collection of coins consists of dimes and nickels .The number of dimes is two more than the twice the number of nickels.The va

lue of the collection is $2.70. How many dimes are in the collection ?
Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0

27 dimes for my answer

hope it works

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Somebody please help quick! solve for x
ololo11 [35]

Answer:

x = 8

Step-by-step explanation:

51° = 4x + 19

32° = 4x

8 = x

5 0
2 years ago
Read 2 more answers
What type of polynomial is: 3x^4 - 2x^3 - 2
butalik [34]

This polynomial has only 3 terms, so it is a trinomial. <em>Hope it helps!</em>

3 0
1 year ago
What is the pressure in atmospheres exerted by a 0.500 mole sample of nitrogen gas in a 10.0 L container at 25.0°C?
drek231 [11]

Answer:

1.2218 atm

Step-by-step explanation:

From ideal gas formula,

PV=nRT

Where n= number of moles

V= volume

T= temperature=25.0°C

= (273 + 25) = 298 K

R= gas constant = 0.082 l atm /K mol.

Making P subject of formula we have

P= [nRT] /V

Then substitute the values we have

P= [0.5 x 0.082 x 298] / 10

P= 1.2218 atm

6 0
3 years ago
May I have some help?
chubhunter [2.5K]
For whatcha problem hun
8 0
3 years ago
In the year 1995, there were 1200 students at pine elementary school. In the year 2010 there were 1500 students. Find the rate o
AnnZ [28]

The rate of change from 1995 to 2010 is 20 students per year and the linear function that models the data will be: y=20x-38700

<em><u>Explanation</u></em>

In the year 1995, there were 1200 students and in the year 2010, there were 1500 students.

If x represents the year and y represents the number of students, then two points in form of (x,y) will be: (1995, 1200) and (2010, 1500)

So, the rate of change or slope = (change in value of y / change in value of x) =\frac{1500-1200}{2010-1995}= \frac{300}{15}=20

Now, plugging  slope(m) = 20 and first point (x_{1}, y_{1}) =(1995,1200)  into <u>point slope form of linear equation</u> y-y_{1} =m(x-x_{1}) , we will get.....

y-1200=20(x-1995)\\ \\ y-1200=20x-39900\\ \\ y= 20x-39900+1200\\ \\ y= 20x-38700



4 0
3 years ago
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