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SashulF [63]
3 years ago
11

Someone help me answer this what is the answer?

Mathematics
1 answer:
galben [10]3 years ago
8 0

Answer:

x = 2.121

Step-by-step explanation:

1. sin 45° = x/3

2. x = sin45° × 3 = 2.121

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A carpenter cut a board 3 3/4 feet long to make a shelf. Before he cut the board, it was 10 1/2 feet long.
viva [34]
Subtract 3 3/4 from 10 1/2.  Note that the LCD is 4, so 10 1/2 = 10 2/4.

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-------------------------
                     ?

Since 2/4 is smaller than 3/4, you must borrow 1 from that 10.

Now your problem looks like   9 6/4
                                               -3 3/4
                                             ----------
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4 0
3 years ago
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To which place value is the number rounded? A 6 © D 8.293 to 8.29 ones tenths hundredths
aksik [14]

Answer:

Hundredths

Step-by-step explanation:

Remember that the tenths are one place to the right of the decimal point.

The hundredths are two places to the right of the decimal point.

In this case, 8.293 was rounded to 8.29. Since the last digit of this number is two places to the right of the decimal point, the number was rounded to hundredths

8 0
3 years ago
if the roots of the equations(given in the picture as question no. 3) are simultaneously real then prove that b2=ac
makkiz [27]
Hi,
1) ax²+2bx+c=0 have real roots then (2b)²-4ac>=0 ==> 4b²>=4ac ==> b²>=ac
2)  bx²-2√(ac)x+b=0 have real roots then 
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8 0
4 years ago
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slega [8]

Answer:

arshyoximately 80%

Step-by-step explanation:

8 0
3 years ago
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Maru [420]

Answer:

336.49

Step-by-step explanation:

Multiply 87.4 times 3.85 to find your answer.

7 0
4 years ago
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