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patriot [66]
3 years ago
12

68° radius=4.2cm A sector of a circle is shown. Find its area, rounded to the nearest tenth.

Mathematics
1 answer:
andrezito [222]3 years ago
8 0

Answer:

10

Step-by-step explanation:

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A railroad track rises 30 feet for every 400 feet of track. What is the measure of the angle of elevation of the track?
gtnhenbr [62]

Answer:

Step-by-step explanation:

Rising 30 feet for every 400 feet of track is not a very large angle of elevation.  We set this up as a right triangle to use right triangle trig to solve for the missing angle.  The height is 30 and the hypotenuse is 400.  The height is the side opposite the angle in question, and the hypotenuse is the hypotenuse! This is the sin ratio.  Setting up the ratio using our info:

sin\theta=\frac{30}{400}

When you are looking for a missing angle measure, as we are here, use the 2nd-->sin buttons to find the inverse of sin, which looks like this:

sin^{-1}(

Enter in the fraction 30/400 after the parenthesis and then hit enter to get the angle measure of 4.3 degrees.

3 0
3 years ago
Solve the following system of equations: <br> x − 2y = 5 <br> 2x − 4y = 10
sineoko [7]
The answer is no slotion 
4 0
3 years ago
Read 2 more answers
10 of 12<br> How far does an object travel if it travels at 30km/h for 2 hours
sammy [17]

Answer:

60km

Step-by-step explanation:

we multiply 30 with 2 and we get the answer as 60km in two hours.

3 0
3 years ago
I need help asap plz
Lostsunrise [7]

Answer:

A

Step-by-step explanation:

The constant of proportionality is the ratio between the two proportional variables in a directly proportional relationship. In this case, the variables are x and y.

To find the constant of proportionality, all we have to do is divide any value of y by its corresponding value of x. Let's take the values in the first row of the table. We know that x=2 and y=12, so the constant of proportionality is \frac{y}{x}=\frac{12}{2} =6. Hope this helps!

7 0
3 years ago
NEED HELP ASAP!!!!!!
Vinvika [58]

Answer:

2.3 hours because 18/60=.3 and add the 2 hours

7 0
2 years ago
Read 2 more answers
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