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jasenka [17]
3 years ago
7

A board 8 ft long is cut into three equals pieces. How long are the pieces?

Mathematics
1 answer:
san4es73 [151]3 years ago
5 0

Answer:

A

Step-by-step explanation:

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Solve:<br> (a+b+c) (a+b-c)
Katen [24]

Answer:

<h2><u><em>a²+2ab+b²-c²</em></u></h2>

Step-by-step explanation:

Solve:

(a+b+c) (a+b-c)=

(a²+ab-ac+ab+b²-bc+ac+bc-c²)=

a²+ab-ac+ab+b²-bc+ac+bc-c²=

a²+2ab+0ac+b²+0bc-c²=

a²+2ab+b²-c²

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2 years ago
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A fire truck parks 30 feet
Marianna [84]

Answer:

34 ft. tall

Step-by-step explanation:

Your first step should to draw a diagram. When you do that, your diagram should look like a right triangle, the leg, or the distance from the firetruck to the building, (we'll call this a) should be 30ft. and the hypotenuse, or the ladder (we'll call this c), should be 45ft.

Now we have a visual so it'll be easier.

We know that this problem is a right triangle and we know that to solve for a missing side of a right triangle you use pythagorean theorem: a^2+b^2=c^2

We know one leg 'a' and the hyp. 'c'  and we just need to find 'b' the other leg (aka the building):

Plug in numbers and simplify:

30^2+b^2=45^2

900+b^2=2025

b^2=1125

≈33.54 OR 34 ft. tall

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3 years ago
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If it is 120 miles and you travel 40 mph, how long will it take you to get to your destination
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Twice the difference of a number and 5 is equal to three times the sum of the number and 6.
Paladinen [302]

Answer:

-28

Step-by-step explanation:

2(x-5) = 3(x+6)

 Solve for x by first distributing

 2x-10=3x+18

Subtract 2x to both side to get x by itself

 -10 = x +18

 <em> x = -28</em>

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3 years ago
Which of these is a correct step in constructing an angle bisector?
algol13

Answer:

c

Step-by-step explanation:

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