3 years ago

Please help me with this one

Mathematics

1 answer:

skad [1K]3 years ago

5 0

Answer:

71.51

Step-by-step explanation:

A=ah+bh+ch+1

2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=3·3+7·3+7·3+1

2·﹣34+2·(3·7)2+2·(3·7)2﹣74+2·(7·7)2﹣74=71.51219

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The angle of elevation of the top of a tree is 60°. If the point of observation is 4m from the foot of the tree. How far is the

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Answer:

Step-by-step explanation:

x = hypotenuse since they want the point of observation to the top of the tree

cos 60 = 4/x

x = 4 / cos 60

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3 years ago

Simplify 3^2×3^4×3^6

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4 0

3 years ago

I need help please????

mezya [45]

Answer:

112

Step-by-step explanation:

Just solve it easy peasy

$7[(25+9)-3(2-1)]$

First solve the inner brackets

$7[(34)-3(3)]\\7[25-9]$

Now the other brackets

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5 0

3 years ago

Read 2 more answers

Point m is the midpoint of ab¯¯¯¯¯ . am=2x+9, and ab=8x−50. what is the length of am¯¯¯¯¯¯ ?

iogann1982 [59]

Since m is the midpoint of ab, then the following relationship is fulfilled:
$am = \frac{ab}{2}$
Therefore, substituting values we have:
$2x+9 = \frac{8x-50}{2}$
From here, we clear the value of x.
We have then:
$2x+9 = 4x-25$
$9+25 = 4x-2x$
$34 = 2x$
$x = \frac{34}{2}$
$x = 17$
Then, the value of am, is given by substituting x in the expression:
$am=2x+9$
Substituting we have:
$am=2(17)+9$
$am=34+9$
$am=43$
Answer:
the length of am is:
$am=43$

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4 years ago