Answer: 250
10 times itself or 10^2 = 100
(100)(5)=500
500/2= 250
A. So we know that a 6 foot figure casts a shadow 4 feet long. 4 foot shadow x 5 = a 20 foot shadow. So this means we take 6 x 5 = 30, and the tree is 30 feet tall.
B. 30 - 6 = 24 feet taller than Frank
Answer:
brainliest answer
Step-by-step explanation:
7 and 2
7+2=9
7-2=5
Answer:
19.20
Step-by-step explanation:
24%×80 = 24×80/100 = 1920/100 = 19.20
Answer:
(1)
Multiplying by 3 both sides of the equality you get that

3u is in the Span of the vectors
.
(2)
That's not true, consider the following counter example.

is a linear combination of
but is NOT a linear combination of 
Step-by-step explanation:
(1)
As the hint indicates, you know that

Then, if you multiply both sides of the equality by 3, you get that

And that's it. 3u is in the Span of the vectors 
(2)
That's not true, consider the following counter example.

is a linear combination of
but is NOT a linear combination of 