MATHEMATICS HIGH SCHOOL

Please help me to answer this question. Thank you

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

1. x = w+y 5. x = vy-5v

2. x = 4v-2y 6. x = vy/9w

3. x = w-x n 7. x = 3-w/v

4. x = w-4v 8. x= y-5w/v

Answer 2

Answer:

Answer:

Step-by-step explanation:

1-x=w+y

2-x=4v-2y

3.x=w-v

4.x=w-4v

5.x=v(y-5)=vy-5v

6.x=vy-9w

7.x=(3-w)/v

8.x=(y-5w)/v

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Two satellites are orbiting earth. The path of one satellite has the equation x² + y² = 56 200 000. The orbit of the other satellite is 200 km farther from the centre of the earth. In one orbit how much farther does the second satellite travel than the first satellite?
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Ratio equal to the ratio given 12:7

1cm x ¼ ??????!????????????

Answers

Answer:

2.5 millimeteers

Step-by-step explanation:

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Answers

Subtract the old reading from the new reading

7143 - 6997 = 146

146 units in all

Note: The first one hundred units costs 24p each unit
the rest cost 16p per unit

100 + 46 = 146
100(24p) = 2400p
46(16p) = 736p

2400 + 736 = 3136p

cost: 3136p

hope this helps

Does a triangle with the lengths 12, 18, and 2 exist

Answers

Answer:

yes

Step-by-step explanation:

I got it right

A 250 ml bottle of water treatment liquid will treat up to 625 litres of water. Given that 1 cubic meter=1000 litres, how much treatment liquid is needed to treat a water tank of 224m cubed when full. Please show workings. Many thanks

Answers

224 m cubed corresponds to:
224×1000=224,000 liters of water in your water tank.
Each bottle of liquid can treat 625 liters of water so you need:
224,000/625=358.4 bottles (a little bit less than 358 and a half bottle) corresponding to:
358.4×250=89,600 ml of treatment liquid.

so 224 cubic meters=224 times 1000 liters=224000 leters

so

250 ml=625 leter
divide 250 by 625 to find how many ml per liter
250/625=0.4
therefor
0.4ml=1 leter treted

so

224000 leters
0.4 ml per liter
224000 times 0.4=89600 ml total
89600=89.6 liters

total is 89600 ml or 89.6 liters

a boy flies a kite with a 100 foot long string. the angle of elevation of the string is 48 degrees. how high is the kite from the ground?

Answers

we know that
in a right triangle
sin ∅=opposite side angle ∅/hypotenuse
opposite side angle ∅=hypotenuse*sin ∅

in this problem
angle ∅=48°
hypotenuse=100 ft
opposite side angle ∅=?----> height of the kite from the ground

opposite side angle ∅=100*sin 48°------> 74.31 ft

the answer is
74.31 ft

Which of the following is x⁴ + y⁴ identically equal to?(A) (x² + y²)(x + y)(x - y)
(B) (x² + xy + y²)(x² - xy + y²)
(C) (x² + √2xy + y²)(x² - √2xy + y²)
(D) (x² + √3xy + y²)(x² - √3xy + y²)
(E) (x + y)²(x-y)²
Can someone explain me how to make it step by step?

Answers

$x^4+y^4 \n \nx^4= (x^2)^2, y^4 = (y^2)^2 \n \nx^4- y^4= (x^2)^2 - (y^2)^2 = (x^2 + y^2)(x^2 - y^2 )\n \nnow \ you \ can \ factor \ the \ second \ again \n \n(hopefully \ you \ see \ that \ it's \ a \ difference \ of \ squares): \n \nx^4 - y^4= (x^2 + y^2)(x + y)(x - y) \n \nAnswer : \ (A) \ (x^2 + y^2)(x + y)(x - y) \n \n \n a^2-b^2 =(a-b)(a+b)$

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