Question

Please i need this asap.

1. What's the coefficient of the term ab2? .
2. implify by using the order of operations. 4(3 – 7)2 + 102.
3. Evaluate the expression, if possible: √49/25

Answer 1

1. Coefficient is 1

2. 166

3.
`(7)/(5)` or
`1(2)/(5)`

Explanation:

1. Since there is no number mentioned before the term
`ab^2` therefore its coefficient is 1.
`(1ab^2)`

2.
`4(3 – 7)^2 + 102`

Using the order of operations, we will start by solving in the brackets first to get:

`4(-4)^2+102`

`4(16)+102`

`64+102`

`166`

3.
`\sqrt{(45)/(25)  }`

SInce both the numerator and the denominator are under the square root so we can write them as:

`\frac{√(49)} √(25)`

`(7)/(5)`

`(7)/(5)` is an improper fraction so we can write it in mixed form as
`1(2)/(5)`

Answer 2

Answer (1):

Coefficient of any term means the number multiplied in that term including sign.

`ab^2` is same as
`1ab^2`.

Hence required coefficient is 1.

Answer (2):

`4(3-7)^2+102`

`=4(-4)^2+102`

`=4(16)+102`

`=64+102`

`=166`

Hence final answer is 166

Answer (3):

`\sqrt{(49)/(25)}`

`=(√(49))/(√(25))`

`=(7)/(5)`

Hence final answer is
`(7)/(5)`