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Dahasolnce [82]
3 years ago
7

What is the result of subtracting the second equation from the first?

Mathematics
2 answers:
andreyandreev [35.5K]3 years ago
7 0
Sorry for my handwriting

Mrac [35]3 years ago
4 0

Answer: - 5x = 8

Step-by-step explanation:

Subtracting equation 2 from 1 implies

- 2x - 3x + 7y - 7y = 10 - 2

- 5x = 8

If solving for x , then

x = -8/5

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After spending $5, Isaac had twice as much money as Luke. If Luke had $10, how much money did Isaac have at first?
Korolek [52]

Answer:

<u>$25</u>

Step-by-step explanation:

10*2=20

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One restaurant offers two large pizzas for the same price as two medium pizzas and a $6 pitcher of drinks. The medium pizza cost
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lauren is driving to the grocey store.Tye average distance is d,in miles,she travels over t minutes is giving is givin bu the fu
yulyashka [42]

Answer:

Average distance traveled in 15 minutes = 7.5 miles

Step-by-step explanation:

Given function:

d(t)=0.5t

where d represents average distance traveled in miles and t represents time in minutes traveled.

To find the average distance traveled in t=15 minutes.

Solution:

In order to find the distance traveled in 15 minutes, we will input t=15 in the given function.

d(15)=0.5(15)

d(15)=0.5\times 15

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4 0
3 years ago
Please Help - Point <br> x^3-4x&lt;-5x^2+20<br> Solve in interval notation and list the zeros
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4 0
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What is the area of a regular hexagon (6 sides) whose
Ganezh [65]

Step-by-step explanation:

With reference to the regular hexagon, from the image above we can see that it is formed by six triangles whose sides are two circle's radii and the hexagon's side. The angle of each of these triangles' vertex that is in the circle center is equal to 360∘6=60∘ and so must be the two other angles formed with the triangle's base to each one of the radii: so these triangles are equilateral.

The apothem divides equally each one of the equilateral triangles in two right triangles whose sides are circle's radius, apothem and half of the hexagon's side. Since the apothem forms a right angle with the hexagon's side and since the hexagon's side forms 60∘ with a circle's radius with an endpoint in common with the hexagon's side, we can determine the side in this fashion:

tan60∘=opposed cathetusadjacent cathetus => √3=Apothemside2 => side=(2√3)Apothem

As already mentioned the area of the regular hexagon is formed by the area of 6 equilateral triangles (for each of these triangle's the base is a hexagon's side and the apothem functions as height) or:

Shexagon=6⋅S△=6(base)(height)2=3(2√3)Apothem⋅Apothem=(6√3)(Apothem)2

=> Shexagon=6×62√3=216

8 0
3 years ago
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