Ask question

Ask question

All categories

4 years ago

14

Chris is look up at the top of a tree. He is standing 20 feet from the tree, and his line of sight is 35 degrees from horizontal

. His eyes are 5 feet above the ground. To the nearest foot how tall is the tree?

1 answer:

zheka24 [161]4 years ago

8 0

19ft you could have looked it up but i'm was happy takin my time and working it out :o

You might be interested in

Simplify this problem

garik1379 [7]

Omg what grade are you in. wish I could help.

4 0

4 years ago

Omar was paid on Friday. On Saturday he spent 1/4 of his pay and on Sunday he bought a new smartphone with 2/3 of the remainder.

nasty-shy [4]

Answer:

Friday: 300 dollars

Step-by-step explanation:

Let Omar's pay on Friday = x

Friday: x

Saturday: 1/4 x was spent.

Sunday: 2/3 *(x - (1/4)x ) = 2/3 * (3/4x) = (2*3/(3*4)x = (6/12)x = 1/2x

Dinner: 15 dollars

Remainder = 20% x = 20/100 x = 0.2x

x - (1/4x + 1/2(x) + 15) = 0.2x Combine like terms on the left

x - (3/4x + 15) = 0.2x Remove the brackets

x - (3/4)x - 15 = 0.2x Combine like terms on the left

(1/4)x - 15 = 0.2x Change 1/4 to a decimal

0.25x - 15 = 0.2x Subtract 0.25x from both sides

0.25x - 0.25x - 15 = 0.2x - 0.25x Combine

- 15 = - 0.05x Divide by - 0.05

-15 /-0.05 = - 0.05 x/ 0.05

300 = x

3 0

4 years ago

Is ( square root 12 -4)(4+square root 12) rational or irrational

Ilia_Sergeevich [38]

Remember
(a-b)(a+b)=a²-b²

we can rewrite what we were given into
$( \sqrt{12}-4)( \sqrt{12}+4)=( \sqrt{12})^2-(4)^2=12-16=-4$
definitely rational

4 0

3 years ago

The Wong family is planning a garden. The garden is a rectangle with a length that is twice the width. The perimeter of the gard

Masja [62]

Length is 120 and the width is 60, because 60×2= 120 and when you add 120+60=180

5 0

3 years ago

A certain forest covers an area of 3300 km^2. Suppose that each year this area decreases by 8.25%. What will the area be after 7

xz_007 [3.2K]

8.25% = 0.0825

1-0.0825 = 0.9175

3300 x 0.9175^7 = 1806.16

1806 km^2

7 0

4 years ago