3 years ago

Choose ALL the right triangles.

Mathematics

2 answers:

11Alexandr11 [23.1K]3 years ago

6 0

Answer:

Bottom left corner and bottom right corner

Step-by-step explanation:

ziro4ka [17]3 years ago

3 0

the orange one and the blue one on the bottom

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Deisha can build a fence in 15 hours, and Travis can build a fence in 12 hours. How long will it take them together to build a f

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Answer:

6 $\frac{2}{3}$

Step-by-step explanation:

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Working together, their combined rate is 1/15 + 1/12 = 3/20 fences per hour

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If RS=8y+4 , ST=4y+8 , and RT=15y-9, find RS, ST, and RT<br> someone please help me

Talja [164]

$RS+ST=RT\\\\
RS=8y+4\\
RT=15y-9\\
ST=4y+8\\\\
8y+4+4y+8=15y-9\\
12y+12=15y-9\ \ \ |Subtract\\
12y=15y-9-12\\
12y=15y-21\ \ \ | Subtract\ 15y\\
12y-15y=-21\\
-3y=-21 \ \ |Divide\ by\ (-3)\\
y=7\\\\
RS=8y+4=8*7+4=56+4=60\\
RT=15y-9=15*7-9=105-9=96\\
ST=4y+8=4*7+8=28+8=36$