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Lostsunrise [7]
3 years ago
10

Fast I need help do t understand !!!!!

Mathematics
2 answers:
77julia77 [94]3 years ago
7 0
Answer: 21, hope it helps
goblinko [34]3 years ago
6 0

Answer:

....................21 .....................

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PLEASE HELP ASAP! Will give BRAINLIEST! Please answer correctly!<br><br> No guessing!
rewona [7]

Answer: b

Step-by-step explanation:

7 0
3 years ago
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Two tomato seeds were planted and watered after six weeks ,plant was 26cetmeters tall.the plant only 74% as tall what was hight
nlexa [21]
The shorter plant was 19.24 cm in height.
74% is equal to 0.74, so the height of the shorter plant can be found by multiplying 0.74 by the height of the taller plant, 26 cm.

26 * 0.74 =19.24
so the height of the shorter plant is 19.24 centimeters
7 0
4 years ago
Candy. Someone hands you a box of a dozen chocolate-covered candies, telling you that half are vanilla creams and the other half
BaLLatris [955]

Answer:

a) P=0.091

b) If there are half of each taste, picking 3 vainilla in a row has a rather improbable chance (9%), but it is still possible that there are 6 of each taste.

c) The probability of picking 4 vainilla in a row, if there are half of each taste, is P=0.030.

This is a very improbable case, so if this happens we would have reasons to think that there are more than half vainilla candies in the box.

Step-by-step explanation:

We can model this problem with the variable x: number of picked vainilla in a row, following a hypergeometric distribution:

P(x=k)=\dfrac{\binom{K}{k}\cdot \binom{N-K}{n-k}}{\binom{N}{n}}

being:

N is the population size (12 candies),

K is the number of success states in the population (6 vainilla candies),

n is the number of draws (3 in point a, 4 in point c),

k is the number of observed successes (3 in point a, 4 in point c),

a) We can calculate this as:

P(x=3)=\dfrac{\binom{6}{3}\cdot \binom{12-6}{3-3}}{\binom{12}{3}}=\dfrac{\binom{6}{3}\cdot \binom{6}{0}}{\binom{12}{3}}=\dfrac{20\cdot 1}{220}=0.091

b) If there are half of each taste, picking 3 vainilla in a row has a rather improbable chance (9%), but is possible.

c) In the case k=4, we have:

P(x=3)=\dfrac{\binom{6}{4}\cdot \binom{6}{0}}{\binom{12}{4}}=\dfrac{15\cdot 1}{495}=0.030

This is a very improbable case, so we would have reasons to think that there are more than half vainilla candies in the box.

4 0
3 years ago
If the measure of arc AD is 65 degrees and the measure of arc BC is 45 degrees, what is the measure of angle BEC?
krek1111 [17]

Answer:

\angle BEC=55 \textdegree)

Step-by-step explanation:

From the question we are told that:

Arc AD =65 \textdegree

Arc BC =45 \textdegree

Given The angle of intersecting chords theorem

Generally the equation for angle BEC is mathematically given by

 \angle BEC=\frac{1}{2} (\angle of arc AD+\angle of arc BC)

 \angle BEC=\frac{1}{2} (65 \textdegree+45 \textdegree)

 \angle BEC=55 \textdegree)

7 0
3 years ago
What is the quotient of 513 ÷ 19? You may draw a picture to help you find the quotient.
ratelena [41]

Answer:

27

Step-by-step explanation:

caculator

3 0
3 years ago
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