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Maurinko [17]
3 years ago
9

-2(a-8)+6a=36 what's the value of a A=

Mathematics
1 answer:
ivann1987 [24]3 years ago
4 0
Distribute -1 into the brackets.
-2(a - 8) + 6a = 36
-2a + 16 + 6a = 36
Take 16 to the other side
-2a + 6a + 16 = 36
               - 16   -16
-2a + 6a = 36 - 16
Combine like terms
4a = 20
Divide by 4 on either sides to isolate a
\frac{4a}{4} =  \frac{20}{4}
4 and 4 cancels out.
a = 5
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ELEN [110]

Answer:

This is trigonomentry

Use SOHCAHTOA

where :

s is sin

c is cos

t is tan

o is opposite (side)

h is hypotenuse (opposite of 90 degree angle)

and a is adjacent (side)

Sin = o/h

cos = a/h

tan = o/a

in this case we are looking for side BC which is the hypotenuse(h)

and we have the side adjacent(a) to angle 71

since we have a and h determine what to use SIN, COS, OR TAN?

we should use Cos

they‘ve given the angle so we should do this...

Cos71 = \frac{6.3}{h}

Cos71 = \frac{6.3}{BC}

now apply algebra...

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Step-by-step explanation:

Simplify the following:

4 (3 x + 2) - 2

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Hint: | Group like terms in 8 + 12 x - 2.

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