Answer:
Step-by-step explanation:
Try using Symbolab, I use it all the time it gives the correct answer and it gives good explanations (this isn't a sponsor I've just been using it since the 6th grade lol).
Set up a ratio with height over shadow height:
40/30 = x/15
Cross multiply:
40 x 15 = 30x
600 = 30x
Divide both sides by 30:
X = 20
The tree is 20 feet tall.
1) -2(n-6)
-2n+12
2) (5b-4)1/5
(5b-4)(1/5)
(5b)(1/5)+(-4)(1/5)
b+-4/5
3) 2/3(6y+9)
(2/3)(6y)+(2/3)(9)
4y+6
4) 4t-7t
-3t
5) -18v^2+23v^2
5v^2
6) 13q-30q
-17q
Answer:
5 1/8 pizza
Step-by-step explanation:
3/4=6/8
1/2=4/8
7/8=7/8
3
6/8+4/8+7/8=17/8= 2 1/8 pizza
3+2 1/8= 5 1/8
To change any percent into a decimal,
move the decimal point two places this way <=== .
8.7 % ==> 0.087
