This is a tough one :/ If f(x) = -x + 7 and g(x) = radical of x– 3, what is (f º g)(4)
1 answer:
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Image of the triangle is attached
Answer:
24 cm
Step-by-step explanation:
If two triangles are similar, the corresponding sides must be in the same ratio.
From the diagram, the height of the triangle is 36cm.
But the height of triangle ABE = h,
To find the height of triangle BCD, let's subtract the height of triangle ABE from 36cm.
Therefore.
Height of BCD = 36 - h.
Since the triangles are similar and their corresponding sides have the same ratio, we have the expression:
Substituting figures, we have:
Cross multiplying, we have:
20(36-h) = 10 * h
720 - 20h = 10h
720 = 10h + 20h
720 = 30h
h = 24 cm
Therefore, the height of triangle ABE is 24cm
Answers:
5) product is
6) product is
7) product is
8) product is
9) product is
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Explanation:
For each of these questions, you'll multiply the term outside by each term inside the parenthesis. I'm using the distributive property.
In problem 5, we multiply the outer 7a by the following terms inside like so
The other problems will have similar steps.
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A useful rule to keep in mind is that
For example,