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forsale [732]
3 years ago
13

What are the coordinates of point (-2, -4) after a 180 degree rotation?

Mathematics
1 answer:
Monica [59]3 years ago
3 0

Answer:

(2, 4)

Step-by-step explanation:

Anytime you rotate a point 180° about the origin, the x-coordinate and y-coordinate become their opposites.

(x,y) becomes (-x,-y)

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Rani had Rs800 left after spending 75% of her money.How much money did she have in the beginning?
hram777 [196]

Answer:

  • Rs. 3200

Step-by-step explanation:

Money left Rs. 800

Money spent = 75%

  • Rs 800 = 25%
  • 800 = 0.25x
  • x = 800/0.25
  • x = 3200

Initial amount was Rs. 3200

6 0
3 years ago
6 5/6 -2 1/4 as a mixed number in simplest form
vlabodo [156]

Answer:4 and 7/12

Explanation: 6 10/12 - 2 3/12 = 4 7/12

6 0
3 years ago
Geometry question for homework.
mars1129 [50]

So remember that the distance formula is \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} .

1.

\sqrt{(4-4)^2+(-2-(-5))^2}\\ \sqrt{0^2+3^2}\\ \sqrt{0+9}\\ \sqrt{9}\\ 3

Distance between (4,-5) and (4,-2) is 3 units.

2.

\sqrt{(1-(-1))^2+(1-4)^2}\\ \sqrt{2^2+(-3)^2}\\ \sqrt{4+9}\\ \sqrt{13}

Distance between (1,1) and (-1,4) is √13 (or 3.61 rounded to the hundreths) units.

3 0
3 years ago
2.1 x 10^5 +4.3 x 10^4
Alla [95]

Answer:

253,000

Step-by-step explanation:

  1. 10^{5} = 100000  
  2. 10^{4} = 10000  
  3. Plug the above answers in: 2.1 × 100,000 + 4.3 × 10,000
  4. 2.1 × 100,000 = 210,000
  5. Plug 210,000 in: 210,000 + 4.3 × 10,000
  6. 4.3 × 10,000 = 43,000
  7. Plug 43,000 in: 210,000 + 43,000
  8. 210,000 + 43,000 = 253,000

I hope this helps!

4 0
3 years ago
The average sunflower has 34 petals. What is the best estimate of the total number of petals on 57 sunflowers?
stellarik [79]
Your initial instinct would be to solve this problem with this solution. 34 x 57 = 1,938 petals.

However, the word estimate is present; therefore, we have to consider that we need to get the approximate number and not the exact number of petals.

There is a general rule regarding estimation or approximation. You have to round it to the nearest place you have based on. In this problem we round it off to the nearest tens place.

If the number is below 5, you round it down: 34 is rounded down to 30 petals.

If the number is above 5, you round it up: 57 is rounded up to 60 sunflowers.

Thus, your equation would be :  30 x 60 = 1,800 petals (best estimate)


3 0
3 years ago
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