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monitta
3 years ago
15

PLEASE HELP FAST! what is the length of segment AB? 10 12 13 15

Mathematics
2 answers:
ss7ja [257]3 years ago
4 0

Answer:

13

Step-by-step explanation:

This triangle appears to be 5 units wide and 12 units tall.

Using the pythagorean theorem, a^2 + b^2 = c^2, we get 25 + 144 = 169 or 13^2.

Therefore the answer is 13.

nekit [7.7K]3 years ago
3 0
Use the picture below for a detailed explanation.

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Forth grade math: What happens to the area of the triangle when one of the dimensions is doubled and halved?
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\bf \textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ b=\stackrel{doubled}{2b} \end{cases}\implies A=\cfrac{1}{2}(2b)(h)\implies \stackrel{\textit{twice as the original area}}{A=bh} \\\\[-0.35em] ~\dotfill

\bf \textit{area of a triangle}\\\\ A=\cfrac{1}{2}bh~~ \begin{cases} b=base\\ h=height\\[-0.5em] \hrulefill\\ h=\stackrel{halved}{\frac{h}{2}} \end{cases}\implies A=\cfrac{1}{2}b\left( \cfrac{h}{2} \right)\implies \stackrel{\textit{half of the original area}}{A=\cfrac{1}{2}bh\left( \cfrac{1}{2} \right)}

7 0
4 years ago
Here's an experiment you can try. Start by folding an ordinary sheet of typing paper exactly in half. Then fold it in half over
Katyanochek1 [597]
First fold = .02
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3rd fold =   .08
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7 0
4 years ago
Read 2 more answers
Solve this please and thank you
natulia [17]

Answer:

x = 6 and DF = 3*6-3 = 15

Step-by-step explanation:

Given triangles are similar and their side lengths are proportional

the similarity ratio for this pair is 4/8 = 1/2

the length of DF:

(7.5)/(3x - 3) = 1/2 cross multiply expressions

3x - 3 = 15 add 3 to both sides

3x = 18 divide both sides by 2

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4 0
3 years ago
−4x + 15= -13<br> what is x?
skelet666 [1.2K]
-4x+15=-13 \ \ \ |-15 \\ \\ -4x=-28 \ \ \ |:(-4) \\ \\ x=7

==================================
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4 0
3 years ago
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Which properties would you use to simplify the following expression? log (17x3)
LUCKY_DIMON [66]

Answer:

Step-by-step explanation:

Did you mean log (17*3)?  If so, your log (17x3) becomes log 17 + log 3.

Did you mean  log 17^3?  If so, log 17^3 = 3 log 17.

Did you mean log 17*x*3?  If so, this equals log 17 + log x + log 3

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3 years ago
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