3 years ago

Perry observes the opposite, parallel walls of a room. In how many lines do the planes containing the walls intersect?

Mathematics

1 answer:

aivan3 [116]3 years ago

6 0

<span> a colector has 90 movie posters and 60 band posters. se wsny</span>

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1 year ago

The longer leg of a right triangle is 6cm longer than the shorter leg and also 1cm longer than the hyptenese. find the perimeter

CaHeK987 [17]

X - a leg (x > 6);
x - 6 - a leg;
x + 1 - a <span>hypotenuse;</span>
Use the Pythagorean theorem
$(x+1)^2=x^2+(x-6)^2$

Use: $(a\pm b)^2=a^2\pm2ab+b^2$

$x^2+2x+1=x^2+x^2-12x+36\ \ \ |-x^2-2x-1\\\\x^2-14x+35=0\ \ \ |-35\\\\x^2-14x=-35\\\\x^2-2\cdot x\cdot7=-35\ \ \ |+7^2\\\\x^2-2\cdot x\cdot7+7^2=-35+7^2\\\\(x-7)^2=14\iff x-7=\pm\sqrt{14}\ \ \ |+7\\\\x=7-\sqrt{14} < 6;\ x=7+\sqrt{14}$

$x=7+\sqrt{14}\\x-6=1+\sqrt{14}\\x+1=8+\sqrt{14}$

The perimeter:

$7+\sqrt{14}+1+\sqrt{14}+8+\sqrt{14}=16+3\sqrt{14}$

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3 years ago

Max bought twice the amount of apples that Jenna bought. Together they bought 18 pounds of apples. How many pounds of apples did

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2x+x=18

Max bought 12 apples and Jenna bought 6

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3 years ago

What’s a triangular prison

zhuklara [117]

Answer:

A triangular prion is a prison in the shape of a triangle.

A triangular prism is a 3d shape of a triangle

Step-by-step explanation:

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