Help me out with answe

Answers

Answer 1

Answer: I'll do better than that ! I'll show you how to do it, because
the answer is no help if you don;t know how to work it out.

Do you see that little square in one corner of the triangle ? That tells you
that the angle there is 90 degrees, and THAT tells you that the triangle is
a RIGHT triangle. This is a very helpful piece of information, because there's
a rule about the sides of a right triangle that isn't true for any other kind of triangle. The rule is:

   (the longest side)² = (one of the other sides)² plus (the third side)²

Also, the longest side is always the one that doesn't touch the 90-degree angle.

In this triangle in the picture,

-- the longest side is 'A' ... it's 13 .
-- one of the other sides is ' b ' ... it's 12 .
-- the third side is ' C ' ... the one you have to find.

Using the formula up above, you know that

   (13)² = (12)² + C²

Before you go to work on it, subtract (12)² from each side of this equation,
just to make it a little easier, and then you have

   C² = (13)² minus (12)²

And right there is how to figure out the length of ' C '.

I'll give you even more information to help you, and then it's up to you
to finish it and get the answer. Here it is:

   (13)² = 169

   (12)² = 144

Now you have everything you need. Go to it !

Answer 2

Answer: To get the answer we can use Pythagorean theorem.
$12^2+c^2=13^2 \n 144+c^2=169$ /-144
$c^2=25 \n c=5$ - its the answer

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Two times the least of three consecutive odd integers exceeds three times the greatest by 15

Answers

Three consecutive odd integers would be x, x+2, and x+4 assuming x is an odd integer. The smallest of these is x. Two times x is 2x. The greatest integer is x+4. Three times this is 3 (x+4), and if you distribute you get 3x+12. If 2x exceeds this by 15, you would make it 3x+12-15. If you add the like terms, 12+(-15) is -3. So, you have 2x=3x-3. Subtract 3x from both sides. 2x-3x is -1x, or -x. Now we have -x=-3. Divide by -, or -1 on both sides. Now we have x=3. You can substitute x for 3 for any of the consecutive odd integers to find their value.

Solve 2a + 21 = 8a - 9, step by step

Answers

2a + 21 = 8a - 9

Combine like terms.

2a + 21 = 8a - 9
-2a -2a

21 = 6a - 9
+9 +9

30 = 6a
6a/6 = 30/6
a = 5

Answer: a = 5

If dave buys a sample of 70 nails and 6 are bad and 64 are good and he needs 2500 good nails how many nails should dave buy

Answers

Answer:

$Dave\ should\ buy\ 2735\ nails.$

Step-by-step explanation:

$Number\ of\ nails=70\n\nGood\ nails=64\n\npercentage\ of\ good\ nails=(good\ nails)/(total\ nails)* 100\n\npercentage\ of\ good\ nails=(64)/(70)* 100\n\npercentage\ of\ good\ nails=91.42857\%\n\nLet\ for\ 2500\ good\ nails\ he\ has\ to\ buy\ x\ nails\n\n91.42857\%\ of\ x=2500\n\n(91.42857)/(100)* x=2500\n\nx=(2500)/(0.9142857)=2734.375\n\nx\approx 2735$

What's the measure of each side length of a unit cube

Answers

The correct answer is one.

the answer is 1
just like he said

(13a−4b 8c) - (5a−6b 7c)

Answers

I got -74bc + 8a ... But I'm not sure if its right .

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