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Alex Ar [27]
2 years ago
13

Can someone please help me do this

Mathematics
1 answer:
Viefleur [7K]2 years ago
4 0

Answer:

Step-by-step explanation:

CD is Pole

∠CAD = 4°  {Alternate interior angles}

ΔCAD,

\dfrac{opposite \ side}{adjacent \ side}= tan 4\\\\ \dfrac{90}{AD}=tan \ 4\\\\ \dfrac{90}{AD} = 0.069\\\\90 = 0.069*AD\\\\ \dfrac{90}{0.069}=AD\\\\AD = 1304 \ ft

In ΔCDB,

∠B = 5° {Alternate interior angles}

Tan \ 5 = \dfrac{90}{BD}\\\\0.09* BD = 90\\\\BD =   \dfrac{90}{0.09}\\\\BD = 1000 \ ft

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In a sample of 77 children , the mean age as at which they first began to combine words was 16.51 months
astraxan [27]

Answer:

Mean age = 1271.27

Step-by-step explanation:

No of children = 77

The age at which children first began to combine words = 16.51 months

Mean age = No of children × age at which children first began to combine words

                = 77 × 16.51

                 = 1271.27

Mean age = 1271.27

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3 years ago
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3 years ago
Screenshot of question attached
Liono4ka [1.6K]
Should be the 2nd and 3rd one
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3 years ago
What is 10x5÷2 equal
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Which of these is NOT a Pythagorean triple?
frozen [14]
A=9+16=25  
B=36+64=100
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8 0
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