A tree casts a shadow 10 ft long. A boy standing next to the tree casts a shadow 2.5 ft long. The triangle shown for the tree and its shadow is similar to the triangle shown for the boy and his shadow. If the boy is 5 ft tall, how tall is the tree?

Answers

Answer 1

Answer: The tree will be 10ft tall if u multiply than divide

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Find the zeros in simplest radical form:
y=1/2x^2-4

Answers

$y= (1)/(2)x^2-4\n \n y =0 \n \n(1)/(2)x^2-4 =0 \ \ / \cdot 2\n \nx^2-8=0 \n \n(x-√(8))(x+√(8))=0 \n \n x-√(8)= \ \ or \ \ x+√(8) = 0 \n \nx=√(8) \ \ or \ \ x=-√(8) \n \nx=√(4\cdot 2) \ \ or \ \ x= -√(4\cdot 2)\n \n x=2√(2) \ \ or \ \ x=-2√(2)$

$y= (1)/(2) x^2-4\n\ny=0\ \ \ \Leftrightarrow\ \ \ (1)/(2) x^2-4=0\ /\cdot2\ \ \ \Leftrightarrow\ \ \ x^2-8=0\n\nx^2-(2 √(2) )^2=0\ \ \ \Leftrightarrow\ \ \ (x-2 √(2) )(x+2 √(2) )=0\n\nx-2 √(2) =0\ \ \ \ \ \ \ \ or\ \ \ \ \ \ \ \ \ x+2 √(2)=0\n\nx=2 √(2)\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-2 \sqrt{2$

It takes 120 minutes for a hose to fill a swimming pool. If the pool drain is open, it takes 360 minutes to fill the pool. If the pool is full, the hose is off, and drain is open, how many minutes does it take to empty the pool?

Answers

I would look at this problem like this:

In those 360 the hose is working, and it's working the same as during the 120 when it filled the pool. Since 360 is three times 120, it means that it filled the pool three times this time. But the pool was only filled once!

This means that twice the pool was drained in those 360 minutes: this makes one draining every 180 minutes. - this is the answer!

Answer:

180 minutes

Step-by-step explanation:

Will the product of a positive number and a negative number be positive or negative? Why?PLEASE HELP1!1!1!1!1!

Answers

Answer:

negative

Step-by-step explanation:

positive * positive = positive

negative * positive = negative

An object is sold for $2 but is on sale for 40% off. What is the final price?

Answers

5 cents or $1.20 I'm not fully sure but it's one of the two

$2,322 round to the nearest dollar please?

Answers

it is $2,322 (The Most Rounded Nearest To A Dollar)

$2,322 rounded to the nearest dollar.
Unless it had a decimal. Like $2,322.50 it would be rounded up to $2,323.
I hope i helped. ;)

Given h(x)=√5-x, the range of h, in inequality notation, is

Answers

assuming that the 5-x is under te sqrt sign

you cannot have sqrt of a negative
find where it equals zero
5-x=0
5=x

the limit is 5=x

x has to be greater than x
to infinity
D={x|x>5}

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