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lana [24]
3 years ago
14

Given ????(a1, aa2), ????(????1, ????2), ????(c1, c2), and ????(d1, d2), find a general formula in terms of a1, a2, ????1, ????2

, c1, c2, d1, and
d2 that will let us determine whether AB and CD are perpendicular.
Mathematics
1 answer:
xxMikexx [17]3 years ago
7 0

cant help when you put question marks!

please do this better!

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A palm tree casts a shadow that is 28 feet long. A 6-foot sign casts a shadow 8 feet long.
s2008m [1.1K]

Answer: The height of the palm tree is 21 feet.

Step-by-step explanation:

We can use a ratio to solve this:

Actual height to shadow for both objects. The fraction equivalents must be equal.

6/8 = x/28 . Cross multiply

6(28) = 8x

168 = 8x   Divide both sides by 8  (8's "cancel" on the right)

168/8 =8x/8

21 = x . This gives us the tree's height as 21 feet.

<em>Another way to solve this is to use the ratios, but simplify the first fraction</em>

<em>6/8 = 3/4</em>

<em>Then multiply the length of the shadow by 3/4</em>

<em>3/4 × 28 = height</em>

<em>28÷4 = 7    7 × 3 = 21</em>

<em>21  feet= the height of the palm tree.</em>

3 0
3 years ago
I think that is correct answer but can you please help me
pochemuha
Yes you are right. it's 132
6 0
3 years ago
Read 2 more answers
A line segment has an endpoint at (5,2) and has a negative slope. Which of the following points could be the other endpoint?
slavikrds [6]
<span>C. (4,3)

Draw and plot on a graph and (4,3) could be the other end point, which
x < 5
y > 2</span>
6 0
3 years ago
Can someone help me with this please &amp; explain how to find the answer?
nikitadnepr [17]

Answer:

the answer is the first one

Step-by-step explanation:

because when you look at the order <MNK is on the other side to the line that bisects the two parallel lines of <LKN

5 0
3 years ago
What is -7.9? I really need help ASAP
Lunna [17]

Answer:

Negative 7.9

Step-by-step explanation:

-7.9 is just negative 7.9.

Do you need this as fraction? If you do, I can help ^^

3 0
3 years ago
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