1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
taurus [48]
3 years ago
15

Convert -140 degrees to radians

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
5 0
180° = π radian
1° = π/180 radian
-140° = π/180 × -140
 = -7π/9
You might be interested in
A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year:
Kaylis [27]

Answer:

A.

mean = 724.2

Median = 715

Mode = 768

B.

Range = 85

Standard deviation = 29.30

C.

Interval = [665.6, 782.8]

Step-by-step explanation:

Number of samples n = 25

Summation X= 769 + 691 + 699 +730+711+ 765+ 702 718 +719 +712+ 768 +688 +757+695 768 +735 +709 +758 +708+ 693 +736 700+ 687 +772 +715 = 18105

A.

1. Mean = 18105/25

= 724.2

2. Median is the middle value when arranged from the least value to the highest = 715

3. Mode is the number with the highest frequency = 768 (occured two times)

B.

1. Range = highest value - lowest value

Highest value = 772

Lowest value = 687

772-687 = 85

2. Standard deviation = √(X-barX)²/n-1

= √20604/25-1

=√858.5

= 29.30

Please check attachment for the full calculation of the standard deviation

C.

Interval

[Mean - 2(sd), mean + 2(sd)]

= [724.2-2x29.3, 724.2+2x29.3]

=[665.6, 782.8]

4 0
2 years ago
I need to find the slope.​
OLga [1]

Answer:

The slope is 3/2

4 0
3 years ago
Read 2 more answers
Find the product of (3x²y²) (4xy³)²
Elena-2011 [213]
First, I would solve the second parenthesis.

(4xy^3)^2

Distribute

(4^2 x^2 y^6)

4 x 4 = 16

Now, combine like terms

3x^2 x 4x^2 = 12x^4

y^2 x y^6 = y^12

So, the answer would be 12x^4 y^12

Hmm actually I'm not sure. I did this about two years ago so I don't really remember sorry if this is really wrong 
5 0
2 years ago
Read 2 more answers
A motorboat travels 165 kilometers in 3 hours going upstream and 510 kilometers in 6 hours going downstream. What is the rate of
nikitadnepr [17]
<h3>Rate of the boat in still water is 70 km/hr and rate of the current is 15 km/hr</h3><h3><u>Solution:</u></h3>

Given that,

A motorboat travels 165 kilometers in 3 hours going upstream and 510 kilometers in 6 hours going downstream

Therefore,

Upstream distance = 165 km

Upstream time = 3 hours

<h3><u>Find upstream speed:</u></h3>

speed = \frac{distance}{time}\\\\speed = \frac{165}{3}\\\\speed = 55

Thus upstream speed is 55 km per hour

Downstream distance = 510 km

Downstream time = 6 hours

<h3><u>Find downstream speed:</u></h3>

speed = \frac{510}{6}\\\\speed = 85

Thus downstream speed is 85 km per hour

<em><u>If the speed of a boat in still water is u km/hr and the speed of the stream is v km/hr, then</u></em>

Speed downstream = u + v km/hr

Speed upstream = u - v km/hr

Therefore,

u + v = 85 ----- eqn 1

u - v = 55 ----- eqn 2

Solve both

Add them

u + v + u - v = 85 + 55

2u = 140

u = 70

<em><u>Substitute u = 70 in eqn 1</u></em>

70 + v = 85

v = 85 - 70

v = 15

Thus rate of the boat in still water is 70 km/hr and rate of the current is 15 km/hr

3 0
3 years ago
Which expression can be used to represent the volume of the trapezoidal prism
Vadim26 [7]

Answer:

Formula for finding the volume of  a trapezoidal prism =\frac{1}{2}(b_1+b_2)h

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • (07.02) Simplify (3x − 5) − (4x + 6). (1 point) −x −11 x − 11 −x + 11 x + 11
    8·1 answer
  • What would a persons speed if they travelled 394 meters in 94 seconds?
    15·1 answer
  • The price of a stock want down $4.25 on Monday and then down $2.75 on Tuesday. What was the overall change in price for the two
    12·1 answer
  • Rename the fraction as a decimal.<br><br> 3/12=
    9·1 answer
  • Calculate the area of the triangle. Please help!
    15·1 answer
  • Line $l_1$ represents the graph of $3x + 4y = -14$. Line $l_2$ passes through the point $(-5,7)$, and is perpendicular to line $
    12·1 answer
  • A jet leaves the Charlotte, North Carolina, airport traveling at an average rate of 564 km/h. Another jet leaves the airport one
    13·1 answer
  • Which of the following functions maps 3 to -5?
    14·1 answer
  • What is the slope intercept form of an equation of the line with slope -0.5 and and y intercept is the orgin?
    14·1 answer
  • A soccer player gets 2 points for a goal and 1 point for an assist. If the combined number of goals and assists that a player ha
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!