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3 years ago

6

If sin(x)=0.5, then cos(90-x)=

1 answer:

Artyom0805 [142]3 years ago

5 0

Answer:

0.5

Step-by-step explanation:

we know , cos(90-α)=sinα

Given:sin(x)=0.5

So, cos(90-x)=sin(x)

=0.5

Therefore, cos(90-x)=0.5

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7x-2=5x+14<br> X=?<br> (step by step needed)

prisoha [69]

Answer:

x = 8

Step-by-step explanation:

Step 1: Subtract 5x from both sides.

$7x-2-5x=5x+14-5x$
$2x-2=14$

Step 2: Add 2 to both sides.

$2x-2+2=14+2$
$2x=16$

Step 3: Divide both sides by 2.

$2x/2=16/2$
$x=8$

Step 4: Check if solution is correct.

$7(8)-2=5(8)+14$
$56-2=40+14$
$54=54$

Therefore, x = 8.

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2 years ago

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liubo4ka [24]

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3 years ago

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Which is the largest interval over which the function shown in the table is decreasing

jeka57 [31]

Okay the answer is b

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3 years ago

Which graph represents the solution set for the inequality -8 < 8 + 4x < 28

valina [46]

Answer:

The solution set for the inequality is the interval (-4, 5)

Step-by-step explanation:

-8 < 8 + 4x < 28

Subtracting 8:

-8 -8 < 8 + 4x - 8 < 28 - 8

-16 < 4x < 20

Dividing by 4:

-16/4 < 4x/4 < 20/4

-4 < x < 5

x ∈ (-4, 5)

8 0

3 years ago

I am thinking of a number. If you multiply my number by four, add -4 to the product, and then take 1/3 of the sum, the result is

bogdanovich [222]

Answer:

$x = - \frac{7}{2}$

Step-by-step explanation:

x=unknown number

$\frac{4x + ( - 4)}{3} = - 6$

$4x - 4 = - 18$

$4x = - 14$

$x = \frac{ - 14}{4}$

simplify the fraction so... -7/2

6 0

3 years ago