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3 years ago

Find the measurement for each marked angle. 2x=y-x y+x+2x=180

Mathematics

2 answers:

Stella [2.4K]3 years ago

5 0

Answer:

x = 30

y = 90

Step-by-step explanation:

2x=y-x

y+x+2x=180

Simplify each equation

2x=y-x

Add x to each side

2x+x = y-x+x

3x= y

y+x+2x=180

y+3x= 180

Substitute y = 3x

y + y = 180

2y = 180

Divide by 2

2y/2 =180/2

y = 90

Now solve for x

3x = 90

Divide by 3

3x/3 = 90/3

x = 30

Since we cannot see the angles, we can only solve for x and y

3x = y

Ksju [112]3 years ago

3 0

Answer:

hope this helped you

please mark as the brainliest (ㆁωㆁ)

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a cold wave hit chicago when the temperature hit 62 f during the cold wave the temperature dropped 2 degrees every hour how many

Vladimir [108]

We start at 62 Fahrenheit. And every hour we drop two degrees. We want to know how long it took for the temperature to drop to 40 Fahrenheit.

If one hour passed, then the temperature dropped two degrees.
If two hours passed, then the temperature dropped 4 degrees.

See the pattern? We can define this as 2h. Where h represents time in hours.
We subtract 2h from 62.

We can write this as a function. F(h) = 62 - 2h.
Where F is the temperature in Fahrenheit. And h is the hour(s).

Now that we have the formula, let's plug in the value 40 Fahrenheit to see how long it took for the temperature to drop to 40 degrees.

40 = 62 - 2h
Subtract 62 from each side

-22 = -2h
Divide both sides by 2

h = 11

So, it took 11 hours for the temperature to drop to 40 Fahrenheit.

3 0

3 years ago

Evaluate csc(-315°).

Maru [420]

Answer:

$\frac{2}{\sqrt{2} } = \sqrt{2}$

Step-by-step explanation:

Notice from the attached image that -315 degrees is the same as 45 degrees.

Recall as well that the csc function is defined as the reciprocal of the sine function: $csc(x)=\frac{1}{sin(x)}$

Then, you need to evaluate $\frac{1}{sin(45)} = 1/\frac{\sqrt{2} }{2} = \frac{2}{\sqrt{2} } =\sqrt{2}$

8 0

3 years ago

How do you do this question?

katovenus [111]

<h3>4 Answers: A, C, E, and F</h3>

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Explanation:

Choice A is true assuming we have $a_n = (-1)^n*b_n$

In this case, $a_n = (-1)^n*\frac{1}{\sqrt{n}}$ and $b_n = \frac{1}{\sqrt{n}}$

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Choice B is false. See choice A above.

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Choice C is true. The sequence $\{b_n\}$ is decreasing. As n gets larger, $b_n$ gets smaller. This is because the denominator is growing larger with the numerator held constant.