Let us take the first equation first
2a + b = 5
Then
b = 5 - 2a
Now we have to put the value of b from the first equation in the second equation. Let us take the second equation now.
3a + 2b = 9
3a + 2(5 - 2a) = 9
3a + 10 - 4a = 9
- a = 9 - 10
- a = - 1
a = 1
Now let us put the value of a in the first equation.
2a + b = 5
2(1) + b = 5
2 + b = 5
b = 5 - 2
= 3
So the value of the unknown variable a is 1 and the value of the unknown variable b is 3.
.8 where cooked by the rooms combined 2) 25% pick blue and red
The negative in front of the parenthesis is canceling out the negative inside of the parenthesis since they are both negatives. Now, you just have to multiply both fractions and find the product.
Answer:
58.8
Step-by-step explanation:9.8*6=58.8
Answer:
1) Option A) is correct
The given rational exponent expression is not simplified correctly as a radical expression is
![x^{\frac{7}{4}}=\sqrt[7]{x^4}](https://tex.z-dn.net/?f=x%5E%7B%5Cfrac%7B7%7D%7B4%7D%7D%3D%5Csqrt%5B7%5D%7Bx%5E4%7D)
2)Option A) is correct
That is 
Step-by-step explanation:
1) Given that 
![x^{\frac{7}{4}}=\sqrt[4]{x^7}](https://tex.z-dn.net/?f=x%5E%7B%5Cfrac%7B7%7D%7B4%7D%7D%3D%5Csqrt%5B4%5D%7Bx%5E7%7D)
is the correct answer but in the given problem they gave the RHS as wrong.
Therefore the given rational exponent expression is not simplified correctly as a radical expression is
2)Given that the rational exponent expression is 
To find it as a radical expression:
Therefore
Therefore Option A) is correct
That is
