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3 years ago

(3/2)x - -4 =13 what is x?

Mathematics

1 answer:

olchik [2.2K]3 years ago

4 0

Answer:

x=6

Step-by-step explanation:

(3/2)x - -4 =13

(3x/2)+4=13

Make 3x/2 the subject

3x/2=13-4

3x/2=9

Cross multiply

3x=9(2)

Divide both sides by 3

3x/3= 9(2)/3

x=3(2)

x=6

To check if correct, substitute x for 6 in the equation. And both sides of the equation must be equal

(3/2)x - -4 =13

(3/2)6 - -4 =13

18/2+4=13

9+4=13

13=13

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Two forces with magnitudes of 90 and 50 pounds act on an object at angles of 30° and 160°, respectively. Find the direction and

Stels [109]

Force 1, F1 = 90, angle 30°

Force 2, F2 = 50, angle 160°

F1 = 90 cos(30) i + 90 sin (30) j
F2 = 50 cos (160) i + 50 sin (160) j

F1 = 90*0.866 i + 90*0.5 j
F2 = 50*(- 0.940) i + 50*0.342 j

F1 = 77.94 i + 45 j
F2 = -47 i +17.10 j

Resultant force, Fr = F1 + F2

Fr = [77.94 - 47.00] i +[45 +17.10]j = 30.94 i + 62.10 j

Magnitude = √[30.94 ^2 + 62.10^2] = 69.38 pounds

Direction = arctan[62.10/30.94] = 63.52 °

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Vesnalui [34]

Answer:

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Step-by-step explanation:

Using x for pay rate

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3 years ago

Solve for v. 14 − 10v + 11 = 20v + 5(–7v − 11) v =

AlexFokin [52]

Answer:

v = -16

Step-by-step explanation:

→Distribute the 5 to (-7v - 11):

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→Add like terms:

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→Add 15v to both sides:

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→Subtract 25 from both sides:

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storchak [24]

Answer:

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Step-by-step explanation:

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