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Mekhanik [1.2K]
3 years ago
13

Which equation has a solution of k = 6.5?

Mathematics
2 answers:
olga_2 [115]3 years ago
4 0
Answer:

-7k = -45.5

Explanation:

You can solve this by plugging in the “k” to the problems that are listed.
If you were to plug 6.5 in for all those problems, you’d get:

-3(6.5) = -19.5

-1 + 6.5 = 5.5

-7(6.5) = -45.5

-2 + 6.5 = 4.5

So, in this case, looking at the ones I answered and looking at the problems listed, the correct answer would have to be -7k = -45.5.
IrinaVladis [17]3 years ago
3 0
-7k=-8.5 since if you were to plug the number Back in (-7k(6.5)=7.5 the equation is correct
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Answer:

Dave needs to mow 14 lawns to have enough money to buy a bike.

Step-by-step explanation:

180-40=140, 140/10=14. Dave needs to mow 14 lawns to have enough to buy a bike.

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Which equation show you how to find 16-9?
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3 years ago
Which of the following appear in the diagram below?
mote1985 [20]

Answer:

Option B ; C ; D

Option B i.e YX

Option C i.e YW

Option D i.e <XYZ

6 0
3 years ago
11. Persevere in Problem Solving Emma and Tony are playing a game. Each draws a triangle
Marta_Voda [28]

Transformations in the coordinate plane maps preimage coordinate points to the coordinate points of the image

  • The quadrant Emma needs to translate her triangle to in order to win are; <u>3rd and 1st quadrants </u>
  • The quadrant Tony needs to translate his image to in order to win is; <u>3rd quadrant</u>

<u />

The reason the above values are correct are as follows:

The given parameter are;

The coordinates of Emma's initial triangle are; (3, 0), (-4, -2), (-2, -2)

Tony's initial triangle coordinates are; (2, 4), (2, 2), (4, 3)

The vector used on the first turn is <6, -5>, which gives;

Emma's first transformation, T_{(6, \ -5)}

1st quadrant (3, 0) → 4th quadrant (9, -5)

3rd quadrant (-4, -2) → 4th quadrant (2, -7)

3rd quadrant (-2, -2) → 4th quadrant (4, -5)

Tony's first transformation, T_{(6, \ -5)}

1st quadrant (2, 4) → 4th quadrant (8, -1)

1st quadrant (2, 2) → 4th quadrant (8, -3)

1st quadrant (4, 3) → 4th quadrant (10, -2)

Emma's second transformation, T_{(-10, \ 8)}

4th quadrant (9, -5) → 2nd quadrant (-1, 3)

4th quadrant (2, -7) → 2nd quadrant (-8, 1)

4th quadrant (4, -5) → 2nd quadrant (-6, 3)

Tony's second transformation, T_{(-10, \ 8)}

4th quadrant (8, -1) → 2nd quadrant (-2, 7)

4th quadrant (8, -3) → 2nd quadrant (-2, 5)

4th quadrant (10, -2) → 1st quadrant (0, 6)

From the above translation transformations, Emma has drawn an image in the 4th and 2nd quadrant, and would needs to draw an image in the <u>3rd and 1st quadrant </u>

<u />

Similarly, from the above values, Tony has drawn an image in the 4th quadrant, 2nd quadrant and 1st quadrant, therefore Tony needs to translate to only the <u>3rd quadrant </u>in order to win

Learn more about transformations in the coordinate plane here:

brainly.com/question/12187315

8 0
3 years ago
Please explain how to do this!!
Tatiana [17]

9514 1404 393

Answer:

  y = 55°

Step-by-step explanation:

You know the sum of angles in a triangle is 180°. So, ...

  25° +30° +x = 180°

And, you know a linear pair of angles totals 180°:

  x + y = 180°

Substituting for 180°, we have ...

  25° +30° +x = x + y

Subtracting x from both sides, we get a relation that is useful to remember:

  25° +30° = y

  y = 55°

_____

This relation is usually described as ...

  An exterior angle is equal to the sum of the remote interior angles.

6 0
3 years ago
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