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Aliun [14]
3 years ago
8

Two trains on opposite tracks leave the same station at the same time. one train travels at an average speed of 80 km/hr and the

other travels at an average speed of 70 km/hr. how long after they leave the station will they be 50 km apart?
Mathematics
1 answer:
Kaylis [27]3 years ago
8 0
I think the answer is 4 more hours or 5 more
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a wire of length 200 cm is cut into two parts and each part is bent to form a square.If the area of the larger square is 9 times
diamong [38]

<em>Answer:</em>

<em>The perimeter of the larger square is 150cm.</em>

<em>Step-by-step explanation:</em>

<em>First of all, let one part of it be "x"</em>

<em>and the other part of it "200-x"</em>

<em>Now to solve this :</em>

<em>The area of the square = L^2</em>

<em>The area of one part of the square = x^2</em>

<em>The area of the other part of the square = (200-x)^2</em>

<em>9x^2= (200-x)^2\\9x^2=40000-400x+x^2</em>

<em></em>

<em>Now, add, -4x^2 to both the sides :</em>

<em>9x^2-9x^2=40000-400x+x^2-9x^2\\-1(8x^2+400x-40000)=0</em>

<em />

<em>Now, take out the "8" which is common :</em>

<em>-8(x^2+50x-5000)=0</em>

<em></em>

<em>Now, divide it by -8 :</em>

<em>x^2+100x-50x-5000=0\\x(x+100)-50(x+100)=0\\(x+100)(x-50)=0\\</em>

<em>x=-100 or 50</em>

<em />

<em>So, now we know that :</em>

<em>One of the part is = 50cm</em>

<em>And the other part is = 150cm</em>

<em />

<em>Thus the perimeter of the larger square is = 150cm</em>

3 0
3 years ago
H(-3), h(5), h(2), h(0)
romanna [79]

Answer:

h(-3) = -3h

h(5) = 5h

h(2) = 2h

h(0) = 0

5 0
2 years ago
An angle measures 64° more than the measure of a complementary angle. What is the measure of each angle?
GarryVolchara [31]
Complementary angles are 90 degrees,so if the angle is 64 degrees more,you just only have to add 90+64=154.

The measure of the angle is 154 degrees

Hope i helped.

Remember:complimentary angles add up to 90 while supplementary angles add up to 180.
6 0
3 years ago
Price Rite has ground beef on sale for $2.50 for 1 pound. Market Basket has ground beef on sale for $9.95 for 5 pounds. Which st
Feliz [49]
Divide the second price by the second pounds. 9.95 / 5 = 1.99
So for every pound you get you pay 1.99 dollars. The second deal is better.
6 0
3 years ago
Given the right triangle below with the altitude drawn, choose all of the statements that are true.
harina [27]

Answer:

6, 2, 5

Step-by-step explanation:

5 0
3 years ago
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