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VLD [36.1K]
3 years ago
11

The following proof has an error. Find the error and choose the correct replacement.

Mathematics
1 answer:
Dvinal [7]3 years ago
8 0

Answer:

opposite sides of a parallel are congruent.

Step-by-step explanation:

the symbol between AB and DC stands for "equal to", not parallel. boom roasted. (don't hate me if I'm wrong)

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What is the cofunction of cos 2pi/ 9
fiasKO [112]

The cofunction of cos is sin(90-x)

90 degrees is equal to PI/2

The cofunction becomes sin(PI/2 - 2PI/9)

Rewrite both fractions to have a common denominator:

PI/2 = 9PI/18

2PI/9 = 4PI/18

Now you have sin(9PI/18 - 4PI/18)

Simplify:

Sin(5PI/18)

3 0
2 years ago
Hey can you please help me with this
Tasya [4]

x=-11

Hope this helps :T

8 0
2 years ago
Vicky ran 5⁄14 of a mile and walked 1⁄7 of a mile. how much further did vicky run than walk?
raketka [301]
To solve, we need to subtract from these two fractions. In order to do this, we will change one of them to have the same denominator as the other.

We have 5/14 and 1/7
Let us change 1/7

Multiply 2/2 (a form of 1 so it does not change the value of the fraction)

2/2 • 1/7 = 2/14

Now subtract from 5/14
5/14 - 2/14 = 3/14

ANSWER: Vicky ran 3/14 of a mile more
7 0
3 years ago
NEED HELP ASAP (ILL GIVE BRAINLIST)
strojnjashka [21]

Answer:

the answer is 33 9/11

Step-by-step explanation:

multiply the fractions

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7 0
2 years ago
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How do banks use deposits?
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As mentioned before, banks<span> basically make money by lending money at rates higher than the cost of the money they lend. More specifically, </span>banks<span> collect interest on loans and interest payments from the debt securities they own, and pay interest on </span>deposits<span>, CDs, and short-term borrowings.</span>
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