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bagirrra123 [75]
3 years ago
11

Diagram shows triangle ABC.

Mathematics
1 answer:
Natasha2012 [34]3 years ago
4 0
Z=20

A triangle is equal to 180 degrees so 70+90=160
180-160=20
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Evaluate 1/4r + 7/12 when r = 7/12
ExtremeBDS [4]

Answer:

\frac{35}{48}

Step-by-step explanation:

Put the value of r in the equation.

\frac{1}{4} × r + \frac{7}{12}  = \frac{1}{4} × \frac{7}{12} + \frac{7}{12}

Evaluate.

\frac{1}{4} × \frac{7}{12} + \frac{7}{12} = \frac{7}{48} + \frac{7}{12}

Make them have the same denominator by multiplying the denominator of the second fraction by 4 so their denominators are 48.

\frac{7}{48} + \frac{7}{12} = \frac{7}{48} + \frac{28}{48}

Evaluate.

\frac{7}{48} + \frac{28}{48} = \frac{35}{48}

7 0
3 years ago
Identify all sets to which the number belongs. –0.249851765...
Ulleksa [173]

Answer:

i. Irrational numbers

ii. Real numbers

Step-by-step explanation:

The given decimal is –0.249851765...

This number does not recur and it does not also terminate.

It belongs to the set of irrational numbers because it cannot be written in the form \frac{a}{b} where a,b\in R and b\ne0.

This numbers also belongs to the set of real numbers.

3 0
3 years ago
Read 2 more answers
Before flipping a fair coin, Sunil assesses that he has a 50% chance of obtaining tails. Subjective probability Empirical probab
ASHA 777 [7]

Answer:

a) Classical

b) Subjective

c) Empirical

Step-by-step explanation:

a) Classical probability: In classical probability, all the events have the same probability. When flipping a coin, the probability of getting tails is the same as the probability of getting tails, therefore, the probability of both events is 50%.

b) Subjective probability: Subjective probability is derived from a personal judgement based on previous experiences. In this case, John would be calculating his probability of receiving A's based on his previous semesters.

c) Empirical probability: is the ratio between the number of outcomes a scenario happens and the total of trials in an ACTUAL EXPERIMENT. In this case, the reporter would be calculating this probability based on his previous experiences attending actual conferences.

5 0
3 years ago
Every year, Alice's family runs the sand castle contest during the Fun in the Sun beach festival. Alice's job is to deliver empt
seropon [69]

Answer:

120 buckets

Step-by-step explanation:

If there are 15 teams and each team gets the same number of buckets (8 buckets as mentioned in the problem), then you can multiply 15 by 8 to get 120.

15 teams * 8 buckets = 120 total buckets

8 0
2 years ago
If you can, please tell how you solved
gizmo_the_mogwai [7]

Answer:

plzz mark me brainlieat if it helps you

x+67 + x+127 = 180

or, 2x + 194 = 180

2x = - 14

: . x = -7

8 0
2 years ago
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