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Scilla [17]
1 year ago
14

What is three and 2 fourths and minus two and three fourths

Mathematics
1 answer:
netineya [11]1 year ago
3 0

Answer:

The answer is 0.75

Hope this helps!

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A force of 4 pound acts in the direction of 48degree to the horizontal. The force moves an object along a straight line from the
Dafna11 [192]

Answer:

<u>Work Done = 27.66 Joules</u>

Step-by-step explanation:

The work done is:

W=F*d*Cos \theta

Where

F is the fore

d is the distance moved

\theta  is the angle

The force is "4"

The distance is the distance from (1,7) to (8,10)

The distance is the square root of change in y coordinates, squared and sum of change in x coordinates, squared. Hence, distance is:

\sqrt{(10-7)^2+(8-1)^2}\\=\sqrt{3^2+7^2}\\\sqrt{58}

The angle is gotten by the formula:

Cos\phi = \frac{Force in x direction}{Distance}\\Cos\phi = \frac{8-1}{\sqrt{58}}\\Cos\phi=\frac{7}{\sqrt{58}}\\\phi = Cos^{-1}\frac{7}{\sqrt{58}}\\\phi = 23.21

So, now:

\theta = 48 - 23.21 = 24.79

Work Done = F*d * Cos\theta = 4 * \sqrt{58} * Cos(24.79)

<u>Work Done = 27.66 Joules</u>

6 0
2 years ago
Which set of numbers includes only integers?
torisob [31]
The last one since it contains only fractions
4 0
2 years ago
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One of the legs of a right triangle measures 12 cm and the other leg measures 9 cm.
PolarNik [594]

Answer:

15cm

Step-by-step explanation:

a^2+b^2=c^2

12^2+9^2=c^2

144+81=c^2

c^2=225

c=15

7 0
2 years ago
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Question 4 of 5
belka [17]

Answer:

Angle B is a straight angel. Angels a and c are bot 45 degrees.

Step-by-step explanation:

8 0
2 years ago
Hi im having troble cobineing like terms -10a - 9n + 16 - 30 + 3n + 15a + 50 + a​
goldenfox [79]

Answer:

6a-6n+36

Step-by-step explanation:

-10a-9n+16-30+3n+15a+50+a

Combine a...

-10a+15a= 5a+a=6a

Combine n...

6a-9n+16-30+3n+50

-9n+3n= -6n

6a-6n+ 16-30+50

Combine # w no variable

Answer: 6a-6n+36

5 0
2 years ago
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