3 years ago

If cos ⁡x=−4/5, and 180°

1 answer:

8 0

Answer:

180< x < 270 so x is in 3rd quadrant ,hence tan x is positive cos x=-4/5 tan(x/2) = √ {(1 − cos x) / (1 + cos x)) = √ { (1+4/5)/(1–4/5) } =√{ 9/5)/(1/5) } =√9=±3 now ...

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If 32x+1 -3x+5, what is the value of x?

kozerog [31]

Answer:

x=-0.21...

Step-by-step explanation:

Make the expression equal 0

32x+1-3x+5=0

Combine the x terms

29x+1+5=0

Combine the constants

29x+6=0

Isolate the x term

29x=-6

Isolate the variable

x=-0.21...

(I rounded to the nearest 100th)

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3 years ago

For the figures shown, HJKL ~ QRST, and the scale factor of HJKL to QRST is 9/7.

ch4aika [34]

Hey there! :)

JK ≈ RS

Scale Factor = 9/7

JK = 56

56 · 9 = 504 = 72
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Your answer ⇒ B.72

Hope this helps :)

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3 years ago

Convert 300 seconds to minutes. A) 5 minutes B) 15 minutes C) 30 minutes D) 150 minutes

Olin [163]

1 minute = 60 seconds

300 seconds / 60 seconds = 5 minutes

7 0

3 years ago

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Which expression is equivalent to (s+7) + 8 by the Associative Property of Addition? *

Maurinko [17]

An equivalent expression would be s+15

You simplify the expression.

So yea the answer is s+15

7 0

3 years ago

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Your parents purchase a computer for $1,257.00 plus 6% sales tax. They decide to finance it through the store’s 0% program for 6

Katena32 [7]

Answer:

$111.59

Step-by-step explanation:

The total amount of the purchase was the cost of the computer plus the sales tax:

$1,257*1,06= $1,332.42

Now, to determine the interest that they will have to pay, you have to consider that the interest rate is 16,75% APR that is the annual percentage rate but as only 6 month have passed, the interest rate at this point that they have to pay is 8.375%:

$1,332.42*8.375%= $111.59

The interest that they will be charged is $111.59

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3 years ago