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oksano4ka [1.4K]
3 years ago
6

Which ratio is the odd one out 4:20. 3:15 8:39 1:5 10:50

Mathematics
1 answer:
Oksana_A [137]3 years ago
4 0

Answer:

8:39

Step-by-step explanation:

because when simplified, all the rest are 1:5

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In the drawing below, line n is a transversal that intersects two parallel lines. What is the measure of Angle 4?
4vir4ik [10]

Answer:

140°

Step-by-step explanation:

<3 = 40 because they are vertical angles

<3 +<4 = 180 because they are same side interior angles

40 + <4 = 180

Subtract 40 from each side

40-40 + <4 = 180-40

<4 = 140

4 0
3 years ago
Can some one explain how to do this?
Delvig [45]

Answer:

see explanation

Step-by-step explanation:

Using the tangent and sine ratios in the right triangle EFG

tan60° = \frac{opposite}{adjacent} = \frac{FG}{EG} = \frac{28}{EG} ( multiply both sides by EG )

EG × tan60° = 28 ( divide both sides by tan60° )

EG = \frac{28}{tan60} ≈ 16.2 in ( to the nearest tenth )

--------------------------------------------------------------

sin60° = \frac{opposite}{hypotenuse} = \frac{FG}{EF} = \frac{28}{EF} ( multiply both sides by EF )

EF × sin60° = 28 ( divide both sides by sin60° )

EF = \frac{28}{sin60} ≈ 32.3 in ( to the nearest tenth )

3 0
3 years ago
Sage and Tom started the month with the same number of talk minutes on their cell phones. Sage talked for 7 minutes with her dad
AlekseyPX

Answer:

Step-by-step explanation:

x=number of talk mnutes

Sage uses 7 minutes = x-7

Tom uses 4 and 3 minutes = x-4-3    = x-7

7 0
3 years ago
Read 2 more answers
Please answer please
loris [4]
4/5 + a = 1
=1/5

*try using cymath it helps!
6 0
3 years ago
Read 2 more answers
Which systems of equations have infinite solutions 2x+5y=31 6x-y=13 or 2x+y=10 -6x=3y+7 or y=14-2x 6x+3y=42 or y=13-2x 4x-3y=-19
Lerok [7]

Answer:

  • y=14-2x; 6x+3y=42
  • 2x+y=17; -6x=3y-51

Step-by-step explanation:

Dependent equations will have infinite solutions. One way to tell if a system of equations is dependent is to put all of the equations into standard form. Here, we can use the form ...

  ax + by = c

where a, b, c are mutually prime integers and "a" is positive. When dependent equations are put in this form, they resolve to the same equation.

Here, the rearrangement is accomplished by putting the x- and y-terms on the same side of the equal sign, with the x-term having a positive coefficient. If necessary, the constant is put on the other side, and any common factors removed from all of them.

Then the sets of equations are ...

  • 2x +5y = 31
  • 6x -y = 13 . . . . not dependent

__

  • 2x +y = 10
  • 6x +3y = -7 . . . . not dependent

__

  • 2x +y = 14
  • 2x +y = 14 . . . . dependent

__

  • 2x +y = 13
  • 4x -3y = -19 . . . . not dependent

__

  • 2x +y = 14
  • x +2y = 13 . . . . not dependent

__

  • 2x +y = 17
  • 2x +y = 17 . . . . dependent

__

The 3rd and 5th sets of equations are dependent, so have infinite solutions.

_____

The second set of equations is inconsistent, so has no solutions.

6 0
3 years ago
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