Osvaldo's teacher asked him to write an equivalent equation for length, 1, in terms of perimeter, p, and width,
w. He wrote:
Analyze Osvaldo's work to determine where he made
an error and what his error was.
O In step 1, he had to add 2w to both sides.
O In step 1, he had to divide both sides by 2w
O In step 2, he had to divide both sides by 2.
O In step 2, he had to subtract 2 from both sides.
p = 21 + 2w
His steps to solve were:
1.
Subtract 2w.
p - 2w = 21
2. Multiply by 2.
2(p - 2w) = 1
His equivalent equation was l = 2(p - 2w).

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )

a

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places

answer: list the statements and i will follow up!

step-by-step explanation: