Find the measure of ∠COB in the figure. answers: A) 24° B) 48° C) 72° D) 132°

Mathematics

1 answer:

jasenka [17]4 years ago

7 0

Answer: 48

Step-by-step explanation: COB and DOA are vertical angles. This means the two of them have the same measure. Because we know the measuremen of DOA, we can easily find the measuremen for COB since these angles are the same, so COB is 48 degrees.

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Am supposed to use the power of tens to estimate this product 52.6 ×9

zepelin [54]

Answer:

Step-by-step explanation:

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3 years ago

You leave a 15% tip of $3.12. How much was the bill?

dangina [55]

Answer:

$3.61 cents

Step-by-step explanation:

Given the following question:

15% of 3.12

To find the answer we use the formula to calculate percentages, then we add that answer to the initial bill.

$\frac{p\times n}{100}$
$\frac{15\times3.12}{100} =15\times3.12=46.8\div100=0.468$
$=0.468$

Round:
$0.468$
$8 > 5$
$0.47$
$t=0.47$

Now add:
$3.14+0.47=3.61$
$=3.61$

After leaving a 15% tip, the total amount you would pay is "$3.61 cents."

Hope this helps.