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Masja [62]
3 years ago
13

HELP ME PLZZZ

Mathematics
2 answers:
Setler79 [48]3 years ago
6 0
H = height of triangle
b = length of triangle base
A = area of triangle

Recall the formula for area of a triangle :

A = 1/2 bh

Plug in what was given in the problem :

h = b - 5
A = 42

A = 1/2 bh
42 = 1/2 b (b-5) 

Dimas [21]3 years ago
4 0
The answer would be B.
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The hypotenuse of a right triangle is 10cm long. The longer leg is 2cm longer than the shorter leg. Find the side lengths of the
Crazy boy [7]
We need Pythagoras theorem here
a^2+b^2 = c^2
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c = length of hypotenuse

Let S=shorter leg, in cm, then longer leg=S+2 cm
use Pythagoras theorem
S^2+(S+2)^2 = (10 cm)^2
expand (S+2)^2
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simplify and form standard form of quadratic
S^2+2S-48=0
Solve by factoring
(S+8)(S-6) = 0   means (S+8)=0, S=-8
or                                   (S-6)=0, S=6
Reject nengative root, so
Shorter leg = 6 cm
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5 0
3 years ago
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zepelin [54]

Answer:

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7 0
3 years ago
Please Help <br> Select the correct answer
Alexus [3.1K]
X^1/2 ( x + 3) (x - 6)
= x^1/2 ( x^2 - 3x - 18)
= x^5/2 - 3x^3/2 - 18x^1/2

= (sqrt x)^5 - 3 (sqrt x)^3 - 18x^1/2

Option 1
5 0
3 years ago
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