MATHEMATICS MIDDLE SCHOOL

4^7/4^9 what is it please help​

Answers

Answer 1
Answer:

Answer:

uhhhhh 0.0625?

Step-by-step explanation:

i may be wrong

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Richelle drew hexagon KLMNOP. She thinks that the angles are congruent. How can she show that the angles are congruent without using a protractor?

Answers

Richelle can fold a hexagon in half and if they match up they will be congruent.
all angles would be congruent

Find the value of:27x^(3)+8 y^(3) if 3x+2y = 20 and xy = (14)/(9)

Answers

27x^3+8y^3=(3x)^3+(2y)^3=(3x+2y)[(3x)^2-3x\cdot2y+(2y)^2]\n\n=(3x+2y)[(3x)^2+2\cdot3x\cdot2y+(2y)^2-3\cdot3x\cdot2y]\n\n=(3x+2y)[(3x+2y)^2-18xy]=(*)\n---------------------------\n3x+2y=20\n\nxy=(14)/(9)\n------------------------------\n(*)=20\cdot(20^2-19\cdot(14)/(9))=20\cdot(400-18\cdot(14)/(9))=20\cdot(400-2\cdot14)\n\n=20\cdot(400-28)=20\cdot372=7440



a^3+b^3=(a+b)(a^2-ab+b^2)\n\n(a+b)^2=a^2+2ab+b^2

Booker owes 85 video games. He has 3 shelves to put the games on. Each shelf can hold 40 games. How many more video games Does he have room for?

Answers

Simple: 3 shelves times 40 games = 120 games, 120-85= 35. So the answer is 35 games.

What does r equal in 4r+5=3r

Answers

4r+5=3r can also be written
4r=3r-5
1r=-5

There were 1000 people at a play . There were 600 males . What is the ratio of total females to total number of people

Answers

Answer:

2:5

Step-by-step explanation:

Answer:

2:5

Step-by-step explanation:

If there were 600 males then there were 400 females because you subtract the number of males from the total number of people

1000-600=400

Then you simplify both sides by 200

400/200=2

1,000/200=5

What fraction is the same as 0.2?

Answers

0,2 = \boxed { (2)/(10) }
It is 2/10 (two over ten) because 0.2 is two tenths.
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