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4 years ago

What value of x makes the equation sin x=cos43

Mathematics

2 answers:

Nikitich [7]4 years ago

7 0

Answer:

x = 47

Step-by-step explanation:

Using the cofunction identity

cos x = sin(90 - x), hence

cos43 = sin (90 - 43) = sin47

g100num [7]4 years ago

5 0

Answer:

0.55511330152

Step-by-step explanation:

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Suppose x=0.5(300-x). what is the value of x?

Sonbull [250]

Expand

x = 150 - 0.5x

Add 0.5x to both sides

x + 0.5x = 150

Simplify x + 0.5x to 1.5x

1.5x = 150

Divide both sides by 1.5

x = 150/1.5

Simplify 150/1.5 to 100

6 0

4 years ago

Which of the equations below contains the two points listed? (-8,-3) and (-8,1) A. y=8 B. x=-8 C. x=8 D. y=-8

victus00 [196]

Answer:

Option B.

Step-by-step explanation:

If a line passing through two points, then equation of line is

$y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)$

It is given that the line passing through (-8,-3) and (-8,1). So, the equation of line is

$y-(-3)=\dfrac{1-(-3)}{-8-(-8)}(x-(-8))$

$y+3=\dfrac{4}{0}(x+8)$

The given line is a vertical line because slope $=\dfrac{4}{0}=\infty$ .

$0=4(x+8)$

$0=(x+8)$

$x=-8$

So, the equation of line is x=-8.

Therefore, the correct option is B.

6 0

3 years ago

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The restaurant is trying out a new menu. They asked 35 people if they liked the changes and 29 said they did. The restaurant had

madam [21]

So the first example says that 29/35 people liked the survey, so all you do is divide 297 by 35 to get 8.4857142857. Then, you multiply 29 buy this number to get 246 (with loads more decimal points). So the answer is B. 246

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3 years ago

Which is the equation of the given line in slope-intercept form? (-1, 2) and (1, -4)

Natalka [10]

1. Find the slope using the slope formula.
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2. Plug that slope and either point into an equation in slope-intercept form and solve for b.
$2 = - 3( - 1) + b \\ 2 = 3 + b \\ - 1 = b$
3. Now write your answer as a slope-intercept form equation
$y = - 3x - 1$

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4 years ago

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Order the amount of rain from least to greatest

babymother [125]

Answer:

1/5, 1/2, 3/4

Step-by-step explanation:

I just now this already from experience, but you could covert all of the fractions into a common denominator. For example use 20.

1/5 = 4/20

1/2 = 10/20

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Then you just need to look at the numerators which 4,10,15 would be the order. And then make sure to convert to the original fractions making the final order be 1/5, 1/2, 3/4.

8 0

3 years ago

What value of x makes the equation sin x=cos43​

What value of x makes the equation sin x=cos43