Expressing rational numbers with decimal expansions

1 answer:

8 0

Moving the decimal over by counting the 0's and moving over and if u move it past the the last number you add a decimal and put a 0 if there is not enough to numbers always move to the right

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PLEASS HELP!!

Vinvika [58]

Answer:

The answer is B

Step-by-step explanation:

By proportion , 3 : 2.91 = 2: x . then you write it in fraction

5 0

1 year ago

Not very good at geometry

FromTheMoon [43]

It's B - 1/√3
because tan is opposite side over adjacent

6 0

2 years ago

I need help please I don’t understand stand

vovikov84 [41]

Answer:

Step-by-step explanation:

all you gotta do is move the figure up 3 squares, and to the right 3 squares, the way I do this is one point at a time

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2 years ago

Read 2 more answers

A reflecting pool is shaped like a right triangle, with one leg along the wall of a building. The hypotenuse is

maria [59]

Answer:

8 ft, 15 ft, 17 ft

Step-by-step explanation:

Let x feet be the length of the side along the building. If the hypotenuse is 9 feet longer than the side along the building, then the length of the hypotenuse is x+9 feet. If the third side is 7 feet longer than the side along the building, then the length of the third side is x+7 feet.

This triangle is right triangle. By the Pythagorean theorem,

$x^2+(x+7)^2=(x+9)^2,\\ \\x^2+x^2 +14x+49=x^2+18x+81,\\ \\x^2-4x-32=0,\\ \\D=(-4)^2-4\cdot 1\cdot (-32)=16+128=144,\\ \\x_{1,2}=\dfrac{-(-4)\pm\sqrt{144}}{2\cdot 1}=\dfrac{4\pm12}{2}=-4,\ 8.$

The length of the side cannot be negative, thus x=8 ft. Then x+7=15 ft, x+9=17 ft.

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2 years ago

Why is the information in the diagram enough to

Dahasolnce [82]

Because both triangles appear to be isosceles!!!!!!???!!!!

8 0

2 years ago