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Vinil7 [7]
3 years ago
15

Find two numbers if their sum is 7.2 and their difference is 2.7

Mathematics
2 answers:
Klio2033 [76]3 years ago
8 0

Answer:

4.95 and 2.25

Step-by-step explanation:

x+y=7.2

x-y=2.7

Add equations

x+y + x-y= (2x-y+y)=2x

7.2+2.7=9.9

Therefore 2x=9.9 x=9.9/2=4.95

x=4.95

x+y=7.2

4.95+y=7.2

y=7.2-4.95=2.25

y=2.25

luda_lava [24]3 years ago
4 0

Answer:

4.95 and 2.25.

Step-by-step explanation: This is really long... (PLEASE TAKE NOTE THE INFO ISNT DIRECTLY WRITTEN BY ME).


Adding equations (1) and (2), we get

Therefore

x=4.95


Substituting value of x from (3) in (1), we get


y=2.25


From (3) and (4), the two numbers are 4.95 and 2.25.

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70 points!!!! Find the horizontal and the vertical components of f.
choli [55]

Answer:

  • F = (16.74, -2.95)

Explanation:

<u />

<u>1) Horizontal component</u>

The horizontal component is related to the magnitude of the force by the cosine ratio:

  • cos (α) = Fx / | F |

Where α in the angle (-10º), Fx is the horizontal component, and | F | is the magnitude of the force (17).

  • cos(-10º) = Fx / 17 ⇒ Fx = cos (-10º) × 17 = 16.74

<u />

<u>2) Vertical component</u>

The vertical component is related to the magnitude of the force by the sine ratio:

  • sin (α) = Fy / | F |

Where α in the angle (-10º), Fy is the vertical component, and | F | is the magnitude of the force (17).

  • sin(-10º) = Fy / 17 ⇒ Fy = sin (-10º) × 17 = -2.95

<u />

<u>3) Form (x,y)</u>

  • F = (16.74, -2.95)
6 0
3 years ago
Abir walks four twelfths of a mile to school. Nadia walks two twelfths of a mile to school. How much farther does Abir walk than
exis [7]

Answer:

Step-by-step explanation:

four twelfths minus two twelfths equals two twelfths

4 0
3 years ago
47 + 34 = 3k + 3k + 3k<br> solve for k
ICE Princess25 [194]

Answer:

Step-by-step explanation:

47+34=9k

81=9k

k=81/9=9

k=9

6 0
3 years ago
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The winner of a basketball contest is the individual who scores the highest percentage of free throws. The top three finishers a
Kamila [148]

Answer:

<h2>Less than 0.84</h2>

Step-by-step explanation:

  1. Convert all numbers to decimals
  • 85% --> 0.85
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Since these are the top three, the rest of the competitors are less than 0.84.

3 0
3 years ago
Anyone know the awnser to this?
iragen [17]

Answer:

61

Step-by-step explanation:

straight line = 180 degree

to find the measure of angle QPR,

subtract 119 from 180

=>            180-119

=>            61

angle QPR = 61 degree

6 0
2 years ago
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