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zvonat [6]
3 years ago
7

A circle has radius 2.5 m. What angle is subtended at the center of the circle by an arc 3 m long? (Round your answer to one dec

imal place.)
Mathematics
1 answer:
TEA [102]3 years ago
3 0
Recall, The arc length [s] of a section of a circle is equal to the circles radius [r] times the central angle [theta] that the arc subtends. in radians.

s=r* \theta

r = 2.5 m.
s = 3 m.

3=2.5* \theta

\theta = 1.2 ~rad

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The temperature was 54 at 7:00 a.m. At 3:00 p.m. on the same day, the temperature was 82. What is the rate of change in temperat
vampirchik [111]

Answer:

The rate of change was 3.5 degrees / h.

Step-by-step explanation:

In order to calculate the rate of change we need to divide the variation of temperature by the variation of time. Since the time is given to us in a 12 h format (am/pm), we first need to convert it to 24 h. To do that we sum the time that is "pm" by 12, we have:

time2 = 3 + 12 = 15

Therefore the rate of change in temperature is:

rate = variation of temp / variation of time

rate = (temp final - temp init) / (time final - time init)

rate = (82 - 54) / (15 - 7) = 28 / 8 = 3.5 degrees / h

The rate of change was 3.5 degrees / h.

4 0
4 years ago
If a leg is 8 cm, what is the length of the hypotenuse
KiRa [710]

Answer:

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Step-by-step explanation:

5 0
3 years ago
Simpfily -39 + 3/2(10)
likoan [24]

Answer:

-38.85   or -24

Step-by-step explanation:

What I do is start with the brackets along with the rest of the numbers involved

2(10) is basically 2 x 10= 20

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-39 + 0.15 = -38.85

Unless if 3/2(10) has 3/2 as a fraction, the answer would be -24

4 0
3 years ago
Which equation shows a proportional relationship between x and y?
Gnoma [55]
Y= 1x is the correct answer
7 0
2 years ago
Find the area of each parallelogram. (Example1.2.Showyourwork.ZA
Gala2k [10]

Answer:

To find the area of each parallelogram.

From the give figure we get that,

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Area of the given parallelogram. is 12 sq.units.

5 0
1 year ago
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