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3 years ago

14. In the graph of an inequality, the region to

Mathematics

1 answer:

miss Akunina [59]3 years ago

5 0

Answer:

gf is the one of the it turn on my exam and after I I don't think they are not (the answer is B)

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Solve each triangle. Round your answers to the nearest tenth

ivolga24 [154]

You have to use the Law of Cosines here, since there's no other way to solve this. it's not a right triangle, so you can't use the Pythagorean Theorem. The Law of Cosines will help us find the missing side length then we will have to use the Law of Sines to find another angle. Then after that we will use the Triangle Angle-Sum theorem to finish it off. Ready? The Law of Cosines to find side b is $b^{2} = a^{2}+ c^{2} -2ac cosB$ and fill in the info we know, which is everything but the b. $b^{2} =(21) ^{2} +(29) ^{2} -2(21)(29)cos109$ . Doing all that math gives us that side b = 40.9 or 41. Now the Law of Sines to find missing angle A or C. Let's find A. $\frac{sinA}{21} = \frac{sin109}{41}$ . That gives us that angle A is 29. Now use the fact that all triangles add up to 180 to get that angle C is 42. And you're done!

7 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20%5Cpi%20%20x%5E%7B4%7D%20%2C%20%5Cpi%20%20x%5E%7B6%7D%20%2C%20%5Cpi%20%20x%5E%7B8%7D%20%2C%

Tomtit [17]

Im barely in 7th grade wat us th is

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3 years ago

How do you make x the subject of the formula when your formula is y= abx? Please can you show me how you worked it out if you an

GrogVix [38]

If you want to solve for x you have to get x alone on one side of the equals sign. In order to do that you have to get rid of the stuff on the same side by doing the opposite operation so that it cancels. What you do on one side you do on. the other side to keep the equation true.

y= abx

a and b are being multiplied by x so divide by ab to cancel them out (ab/ab is 1).

y= abx/ab (ab cancels)

now divide the other side by ab to keep the equation true.

y/ab= x

7 0

3 years ago

Which number is equivalent to 3^4/3^2

s2008m [1.1K]

$\frac{ 3^{4} }{ 3^{2} }$ First, take about the $3^{4}$ and $3^{2}$
$\frac{3 x 3 x 3 x 3}{3 x 3}$ You can cancel out the two 3's on the bottom using two of the threes from the numerator
$\frac{3 x 3}{1}$ Simplify the fraction
3 x 3 Multiply
9

4 0

3 years ago

HDTV screens usually have a width-to -height ratio of 16:9. Which screen dimensions are in the same proportion?

love history [14]

Answer:

4 feet by 3 feet

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.

Please have a look at the attached photo.

My answer:

width-to -height ratio of 16:9

Let analyse all possible answers:

4 feet by 3 feet

16 divided by 4 is the same as 9 divided by 3 => it is true

28 inches by 21 inches

16 divided by 28 is different as 9 divided by 21 => it is wrong

48 centimeters by 27 centimeters

16 divided by 48 is different as 9 divided by 27 => it is wrong

26 inches by 19 inches

16 divided by 26 is different as 9 divided by 219=> it is wrong

We choose A.

Hope it will find you well.

7 0

3 years ago