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3 years ago

Helppppppppp mathhhhhhhh

Mathematics

1 answer:

irina1246 [14]3 years ago

6 0

This right triangle with 30°, 60° and 90° is called semi equilateral. Its particularity is that the side opposite to 30° is equal half of the hypotenuse.

Here the longest leg is nothing but the hypotenuse =18.(given):
Let x be the side opposite to 60° and let's calculate it by Pytaghoras:

18² =(18/2)² + x²,

324 = 81 + x² . Subtract 81 from both sides

324 - 81 = 81 + x² - 81

243 = x² and x = √243 =9√3

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Distance: Jack and Jill start from the same point and walk in'opposite directions. Jack

777dan777 [17]

Answer:

t = 6 km/hour

And, J would be 4 km per hour

Step-by-step explanation:

Let us assume the speed of Tom be T

And, the Speed of Jim be J

Given that

T - J = 2 km /hr ...........(i)

After 3 hours distance between them = 30 km

As they are walking in the opposite direction

Thus,

Net speed =T + J

L ÷ (T+J) = 3

30 ÷ (T+J) = 3

T +J =10 ..............(2)

After solving these two equations

2T = 12

t = 6 km/hour

And, J would be 4 km per hour

6 0

2 years ago

IS THIS RIGHT <br> JUST ANSWER YES OR NO

Ivanshal [37]

Answer:

Step-by-step explanation:

x^3 + 2x^2 - 9x - 18 = x^2(x + 2) - 9(x + 2) = (x + 2)*(x^2 - 9)

(x + 2)/(x + 2)(x^2 - 9) = 1 / (x^2 - 9)

==============

1/(x^2 - 9) * (x^2 - 9)/(3x + 1) = 1/(3x + 1)

Yes B is correct.

4 0

2 years ago

Read 2 more answers

Witch equation dose the graph below represent

fenix001 [56]

When the function goes 1 to the right, it goes 2 down. Therefore the direction of the function is
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y = -2x

8 0

2 years ago

three softball players wrote down their batting average : amy wrote 12 or 30 , sue wrote .34 , kit wrote 9/21 . who is a better

Maksim231197 [3]

Amy: 12 or 30
Sue: 0.34
Kit: 9/21
Kit is the better hitter.

Hope this helps :^)

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2 years ago

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ValentinkaMS [17]

Point-slope form of equation is: $y - 7 = -15(x-1)$