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k0ka [10]
3 years ago
8

Find the measure of the angle between two forces of 30 pounds and 35 pounds if the magnitude of their resultant is 42 pounds

Mathematics
2 answers:
Harman [31]3 years ago
5 0

Answer:

100 degrees

Step-by-step explanation:

30^2+35^2-2*30*35cos80

=42

180-80=100

yKpoI14uk [10]3 years ago
4 0

Answer:

80 degrees

Step-by-step explanation:

42^2=30^2+35^2-2(30)(35)cosx

1764=2125-(2100)(cosx)

-361= -2100cosx

-361/-2100=cosx

0.1719047619=cosx

cos^-1x=80.10141556

Round off to the nearest degree=80

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What is a rational number
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Rational numbers are a giant group of numbers in mathematics. Basically, rational numbers are all numbers that can be written as a fraction. The set of rational numbers includes many subsets of numbers which are provided in the image.

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Vladimir has 64 coins of .25 cents and 56 coins for .50 cents. What is the greatest number of identical packs of coins with no c
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The set of types of matter<br>well difined or not​
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Which is the simplified form of r-7 + s-12?
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Answer:

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1 year ago
Drag each number to the correct location on the equations. Each number can be used more than once, but not all numbers will be u
7nadin3 [17]

The system of equations to find the cost of one adult ticket, a, and the cost of one child ticket, c are Roy's; 6a+2c=66 Elisa's 5a+4c=62.

<h3>What is a system of equations?</h3>

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Let's consider adults tickets be a and child tickets be c

so

Roy's purchase

6a+2c=66------1

Elisa's purchase

5a+4c=62-------2

Hence,  the system of equations

6a+2c=66------1

5a+4c=62-------2

solving simultaneously

6a+2c=66

5a+4c=62

Also,

 12a+4c=132

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brainly.com/question/10413253

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