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Naily [24]
3 years ago
6

If 2x + 5 =8 ×, then 12x=

Mathematics
2 answers:
nadya68 [22]3 years ago
5 0
<span>2x + 5 =8x
6x = 5
x = 5/6

12x = 12(5/6) = 10</span>
nikitadnepr [17]3 years ago
5 0
2x+5=8x
Then Subtract 2x from both sides
2x+5=8x
-2x. -2x

5=6x
Then divide each side by 6

X=5/6

12x= 12(5/6) = 9.996
If you need round to 10
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Find the exact value of sec theta if csc theta = -4/3 and the terminal side of theta lies in quadrant III
GREYUIT [131]

Answer:

-4 sqrt(7)/7

Step-by-step explanation:

csc theta = -4/3

csc theta = hypotenuse / opposite side

hypotenuse = 4  

opposite  = 3

Using the pythagorean theorem

a^2 + b^2 = c^2

3^2 + b^2 = 4^2

9+b^2 = 16

b^2 = 16-9

b^2 = 7

Taking the square root

sqrt(b^2) = sqrt(7)

b = sqrt(7)

We are in the third quadrant so only tan  and cot are positive

that means the x and y values are "negative"  so a = -3 and b = - sqrt(7)

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                = 4/ - sqrt(7)

rationalizing  

                   -4 sqrt(7)/ sqrt(7)* sqrt(7)

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3 years ago
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GarryVolchara [31]

Answer:

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Step-by-step explanation:

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Answer:

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