So, first you’re going to combine any like terms. So, add 4 and 6 and you get 10. Then you do the other side which is 5 plus 4 and you get 9. So now it is 2d÷10=9. Now you can put 2d over 10 multiplied by d in a fraction. A fraction represents division. So it would be 2/10b=9. You can simplify it to 1/5b=9.Now you have to get rid of the fraction so you multiply by its opposite to get rid of it. So multiply by 5 on both sides so you get b=45.
Answer: First of all thats wrong. 1/2 + 10 = 10 1/2 and 1/4 + 54 = 54 1/4
Step-by-step explanation:
Answer:
The angle between them = 52.1°
Step-by-step explanation:
∵ The position vector of the first point is ![\left[\begin{array}{ccc}1\\5\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%5C%5C5%5Cend%7Barray%7D%5Cright%5D)
∵ The position vector of the second point is ![\left[\begin{array}{ccc}6\\3\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%5C%5C3%5C%5C%5Cend%7Barray%7D%5Cright%5D)
∵ The magnitude of the first = √(1²+5²) = √26
∵ The magnitude of the second = √(6²+3²) = √45
∵ The scalar product of them = (1 × 6) + (5 × 3) = 6 + 15 = 21
∵ cosФ = scalar product/(magnitude 1st × magnitude 2nd)
∴ cosФ = 21/(√26 × √45) = 0.61394
∴ Ф = 52.1°
<span>Simplifying
7z + 5p = 9
Reorder the terms:
5p + 7z = 9
Solving
5p + 7z = 9
Solving for variable 'p'.
Move all terms containing p to the left, all other terms to the right.
Add '-7z' to each side of the equation.
5p + 7z + -7z = 9 + -7z
Combine like terms: 7z + -7z = 0
5p + 0 = 9 + -7z
5p = 9 + -7z
Divide each side by '5'.
p = 1.8 + -1.4z
Simplifying
p = 1.8 + -1.4z</span>
The answer to this question is false