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OverLord2011 [107]
3 years ago
5

You estimate that a jar contains 68 marbles. The actual number of marbles is 60. Find the percent error. Round your answer to th

e nearest tenth.
Mathematics
1 answer:
viva [34]3 years ago
3 0
The correct answer is 13.3%

Hope this helps!
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AB is tangent to the circle k(O) at B, and AD is a secant, which goes through center O. Point O is between A and D∈k(O). Find m∠
drek231 [11]

Answer:

∠BAD=20°20'

∠ADB=34°90'

Step-by-step explanation:

AB is tangent to the circle k(O), then AB⊥BO. If the measure of arc BD is 110°20', then central angle ∠BOD=110°20'.

Consider isosceles triangle BOD (BO=OD=radius of the circle). Angles adjacent to the base BD are equal, so ∠DBO=∠BDO. The sum of all triangle's angles is 180°, thus

∠BOD+∠BDO+∠DBO=180°

∠BDO+∠DBO=180°-110°20'=69°80'

∠BDO=∠DBO=34°90'

So ∠ADB=34°90'

Angles BOD and BOA are supplementary (add up to 180°), so

∠BOA=180°-110°20'=69°80'

In right triangle ABO,

∠ABO+∠BOA+∠OAB=180°

90°+69°80'+∠OAB=180°

∠OAB=180°-90°-69°80'

∠OAB=20°20'

So, ∠BAD=20°20'

5 0
3 years ago
Read 2 more answers
From a group of 11 people, you randomly select 2 of them. What is the probability that they are the 2 oldest people in the group
Artemon [7]

Answer:

2/11

Step-by-step explanation:

Probability is the LIKELIHOOD of an event.

According to the word problem, there are 11 people in total and 2 of them are being selected.

The probability of them being the 2 oldest people is 2 in 11, or 2/11.

8 0
2 years ago
2/3 - 1/5 as a fraction
Goryan [66]

Answer:

Step-by-step explanation:

8 0
3 years ago
Simplify 8u+9v+3u−5v
REY [17]
Combine like terms:

11u+4v
8 0
3 years ago
I had a question ask how many years will it be until 80% of the population will be registered to vote. the answer is t=10.14 but
Pachacha [2.7K]

Answer:

This is what came up when I googled it... Sry

Step-by-step explanation:

e^{\ln x}=x

\ln = natural logarithm

e = natural exponent

x = real number

The "common" logarithm has 10 as its base and is denoted as “log.” The following formula allows you to take the natural logarithm by using the base-10 logarithm: ln(number) = log(number) ÷ log(2.71828).

3 0
3 years ago
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