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katrin [286]
3 years ago
5

Need help on number 5 please.

Mathematics
1 answer:
DiKsa [7]3 years ago
7 0

9514 1404 393

Answer:

  (x, y) ⇒ (y, -x)

Step-by-step explanation:

Rotation 90° CW is described by the transformation ...

  (x, y) ⇒ (y, -x)

_____

<em>Additional comment</em>

If you consider a point on the x-axis after a 90° CW rotation, you realize it must have been on the y-axis before the rotation. That is, the new x-value is the old y-value.

Similarly, a point on the y-axis after rotation 90° CW must have been on the -x axis before the rotation. The new y-value is the old -x value:

  (x, y) ⇒ (y, -x) . . . . . (old coordinates) ⇒ (new coordinates), 90° CW

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Mo has some sweets. He shares them out between x of his friends in 2 different wys. 7 sweets each with 2 leftover or 6 sweets ea
sveticcg [70]

Answer:

Mo is sharing the sweets between 5 friends

Step-by-step explanation:

An important thing to note is that whichever way Mo shares the sweets, the total number of sweets he has does not change. It means that if he chooses the first method to share the sweets, or the second method, he still has the same number of sweets. This will be helpful in setting up an equation that will help us solve the problem.

If he chooses the first way to share the sweets:

7x + 2 = total number of sweets available.

<em>This is because each of his friends gets 7 sweets each, with 2 leftovers. If we add them up, it will give the total number of sweets available to be shared.</em>

<em />

If he chooses the second way to share the sweets:

6x + 7 = total number of sweets available.

<em>This is because each of his friends gets 6 sweets each, with 7 leftovers. If we add them up, it will give the total number of sweets available to be shared.</em>

<em />

because the total number of sweets do not change, we have

7x +2 = 6x +7

Grouping like terms,

7x - 6x = 7 - 2

x = 5.

Therefore, Mo is sharing the sweets between 5 friends

7 0
3 years ago
9. What is the value of x if the quadrilateral is a rhombus? 15 5x 4x+3​
Andreyy89
X is 3!! you would set the equation as 4x+3=15. Subtract 3 from both sides to get 4x=12. Divide by 4, then you get your answer as x=3. hope this helped!!
3 0
3 years ago
Last August, the Martin family paid 75 for home owners association fee in February,they paid 54 what is the percent of decrease
insens350 [35]

Answer:

21% decrease

Step-by-step explanation:

just took 75 _ 54 and came up with 21 and juat added the % to it

4 0
4 years ago
Do it plz<br><br><br> PRETTY PLEASE
g100num [7]
87.5 you multiply the 7 meters by 12.5
7 0
3 years ago
Help please!!!!!! I don't have a lot of time
Lina20 [59]

Answer:

Its 5,...................

4 0
3 years ago
Read 2 more answers
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