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3 years ago

In a geometric sequence a5=36 and a7=16. use the geometric meant to find the value of a6

Mathematics

2 answers:

hammer [34]3 years ago

5 0

Simple this is a geometric sequence answer is 32 becauase geometric sequences in this term mean a5*2, giving us 32.

xz_007 [3.2K]3 years ago

3 0

Each term is -10.

a6 would be 26.

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Galina-37 [17]

The way to write this would be:

2v+15

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3 years ago

Read 2 more answers

12. The width of a rectangle is 16.55 inches. The length of the rectangle is half its width.

zepelin [54]

The answer is D

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4 years ago

Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.

oksian1 [2.3K]

Answer:

0.36 = 36% probability that the land has oil and the test predicts it

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

45% chance that the land has oil.

This means that $P(A) = 0.45$

He buys a kit that claims to have an 80% accuracy rate of indicating oil in the soil.

This means that $P(B|A) = 0.8$

What is the probability that the land has oil and the test predicts it?

This is $P(A \cap B)$ . So

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

$P(B \cap A) = P(B|A)*P(A) = 0.8*0.45 = 0.36$

0.36 = 36% probability that the land has oil and the test predicts it

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3 years ago

An equation is shown. 21t = 252

alexdok [17]

Answer:

t = 12

Step-by-step explanation:

<em>252 divded by 21 =</em>

<em /> $12$ '

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3 years ago

Subtract. Write your answer in simplest form. 3\15 - 2\5

fiasKO [112]

Answer 1: 2/5= 6/15 3/15-6/15= -3/15
Answer 2: 7/10= 14/20
1/4= 5/20
difference- 9/20
Answer 3:
2 5/6= 17/6
3 2/5= 17/5
17/6 = 85/30
17/5= 102/30
187/30
Answer 4:
11/2
9/7
77/14
81/14
-4/14
Answer 5:
23/4
35/12
69/12+35/12= 104/12= 26/3

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3 years ago