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vitfil [10]
3 years ago
12

Could someone give me the answer to this please?

Mathematics
1 answer:
suter [353]3 years ago
7 0

Answer:

A = 55.15

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

cos theta = adjacent/ hypotenuse

cos A = 4/7

Take the inverse cos of each side

cos^-1 cos A = cos^-1 (4/7)

A = 55.15009542

To the nearest hundredth

A = 55.15

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3 years ago
Help me please..... please
Oksana_A [137]

Answer:

general rule Un=1.8n-21

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Step-by-step explanation:

a5=a+4d,  a5=-12

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-12=a+4d

-3=a+9d subtract the system of equations

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d=1.8

substitute d into first equation to find a

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7 0
3 years ago
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sergejj [24]

Answer:

B

Step-by-step explanation

multiply 2 and 6 by 9

4 0
3 years ago
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nlexa [21]
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3 years ago
Plz help me with this 245 x 4 =
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Answer:

980

Explanation step by step:

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\: 245 \\ \:  \:  \:\times  4 \\  -  -  -  \\9 \: 8 \: 0

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