Question

NEED HELP PLEASE HELP ME

1.)A rectangle has a length that is 8 less than its width, w. The perimeter is 52. Which equation can be used to determine its width?

8-w=52
2(w-8)+2w=52
(w-8)+w=52
2(8-w)+2w=52

2.)Garrett is creating a table to model the speed of a canoe in a river. He knows that the canoe travels at 4 mph in still water. What does x represent in Garrett’s table?

A.speed of current in river
B.speed of canoe upstream
C.time of trip
D.distance traveled

Answer 1

its b because The water is using speed to go faster

Answer 2

1. 2(w-8)+2w=52.

2.A. speed of current in river.

Explanation:

1. Given

Width of rectangle = w

Length of rectangle is 8 less than its width

Therefore, the length of rectangle =w-8

The perimeter of rectangle= 52

We know that perimeter of rectangle =
`2( length + breadth)`

By using thi formula

Substitute the value of length, width and perimeter we get

52= 2
`\left\{(w-8)+w \righ\}`

By simplification we getb

`2(w-8)+2w=52`

Hence, the equation can be used to determine its width

`2(w-8)+2w=52`.

2.Garrett is creating a table to model the speed of a canoe in a river

Speed of canoe in still water= 4m\h

From table

Downstream Speed of canoe =
`4+x`

Upstream speed of Canoe=
`4-x`

We know that

Downstream speed of Canoe= speed of Canoe in still water + speed of current in river

By comparing two value of downstream

speed of Canoe in still water=4 m\h ( given )

Then x represent the speed of current in river.

Hence, option A is correct answer.