HELP WITH QUESTION 4 PLZ ASAP thx for the help!!

Mathematics

1 answer:

julsineya [31]3 years ago

7 0

I cant see it or else i would help sorry..

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A set of stairs is being built as shown.

Sergio [31]

Step-by-step explanation:

using Pythagoras a²+b²=c²

HOWEVER you know the hypotenuse

so it's rearranged to either c²-b²=a² or c²-a²=b²

so 13²-11²

so 169-121

this makes 48

square root 48 is 6.90 inches

this rounds up to 7 Inches

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3 years ago

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Christina rolls a number cube twice.What is the probability she rolls a prime number and then an odd number?

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The length of one leg of a right triangle is 21 ft and the length of the hypotenuse is 29 what's the length of the other leg

lisabon 2012 [21]

You need to use the steps of a^2+b^2=c^2
A and B are the legs. C is the hypotenuse.

If we follow that through, we find the answer is 20.

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Maya painted 3/4 of her art project in the morning and 1/8 of her project in the evening which equation can Maya use c to find h

Tatiana [17]

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Step-by-step explanation:

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Stacey has a square piece of cloth. She cuts 3 inches off of the length of the square and 3 inches

Mamont248 [21]

Answer:

6 in

Step-by-step explanation:

Let x = the side length of the original square.

They removed 3 in from each side of the original square, so the side lengths of the remaining square are x - 3 in.

The area of the smaller square is (x - 3)².

The area of the original square is x²

I assume the area of the smaller square is ¼ that of the original square. Then

1. Solve for x

$\begin{array}{rcl}\frac{1}{4}x^{2} & = & (x - 3)^{2}\\x^{2} & = & 4(x - 3)^{2}\\& = & 4(x^{2} - 6x + 9)\\x^{2}& = & 4x^{2} - 24x + 36\\3x^{2} - 24x + 36 & = & 0\\x^{2} - 8x + 12 & = & 0\\(x - 2)(x - 6) & = & 0\\x - 2 = 0& \qquad &x - 6 = 0\\x = 2& \qquad &x = 6\\\end{array}$