Answer:
n = 185/9
Step-by-step explanation:
(6n-25) + (3n + 20) = 180
Combine like terms
9n -5 = 180
Add 5 to each side
9n - 5 +5 = 180+5
9n = 185
Divide each side by 9
9n/9 = 185/9
n = 185/9
Answer:
Step-by-step explanation:
First, we can write:
x
=
1
.
¯¯¯¯
21
Next, we can multiply each side by
100
giving:
100
x
=
121
.
¯¯¯¯
21
Then we can subtract each side of the first equation from each side of the second equation giving:
100
x
−
x
=
121
.
¯¯¯¯
21
−
1
.
¯¯¯¯
21
We can now solve for
x
as follows:
100
x
−
1
x
=
(
121
+
0
.
¯¯¯¯
21
)
−
(
1
+
0
.
¯¯¯¯
21
)
(
100
−
1
)
x
=
121
+
0
.
¯¯¯¯
21
−
1
−
0
.
¯¯¯¯
21
99
x
=
(
121
−
1
)
+
(
0
.
¯¯¯¯
21
−
0
.
¯¯¯¯
21
)
99
x
=
120
+
0
99
x
=
120
99
x
99
=
120
99
99
x
99
=
3
×
40
3
×
33
x
=
3
×
40
3
×
33
x
=
40
33
15x^3-6x^2-35x+14 it that doesn’t work try mathaway
Hey there!
The answer to your question is, yes, it is
Given:
![\frac{24}{15}](https://tex.z-dn.net/?f=%5Cfrac%7B24%7D%7B15%7D)
To see if they are equal, we can use cross products (see below for information about this, if you don't know what it is). Let us assume they are equal. This would mean that:
![8*15=24*5](https://tex.z-dn.net/?f=8%2A15%3D24%2A5)
Let's solve it and see if it is true:
![8*15=24*5](https://tex.z-dn.net/?f=8%2A15%3D24%2A5)
![120=120](https://tex.z-dn.net/?f=120%3D120)
Therefore, they <em>are </em>proportional.
<u>Cross products</u>
WORD DEFINITION:
Given two fractions, you can take the numerator of the first fraction multiplied by the denominator of the second fraction and it should equal the denominator of the first fraction multiplied by the numerator of the second fraction.
ALGEBRAIC DEFINITION:
Given two fractions,
,
<em>should </em>equal to ![b*c](https://tex.z-dn.net/?f=b%2Ac)
Hope it helps, and have a terrificly amazing day!