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3 years ago

I need help on this

Mathematics

1 answer:

Mashutka [201]3 years ago

5 0

The answer is c. congruent means if they are identical or not. Only line AB and line BC are the same.

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Marie currently has a collection of 58 stamps if she buys s stamps each week for w Weeks which expression represents the total n

laila [671]

58 stamps is the number she gets each week. So if she went for one week, 58*1=58. 58*2=116 and so on. Because we don't know the exact number of weeks, we say 58w or 58*w because you multiply however many number of weeks she collects.

8 0

3 years ago

What is the r-value of the following data to three decimal places

Liula [17]

Answer:

option B

$-0.953$

Step-by-step explanation:

we know that

The<u> correlation coefficient</u> r measures the direction and strength of a linear relationship.The value of r is always between $+1$ and $-1$

Using a Excel tool (Correl function)

see the attached table

The value of r is $-0.953$

7 0

4 years ago

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Sixty-eight percent of adults in a certain country believe that life on other planets is plausible. You randomly select five adu

Pavlova-9 [17]

Answer:

Mean = 3.4

Variance = 1.088

Standard deviation = 1.0431

Step-by-step explanation:

$P=0.68\\ \\N=5$

The mean of a binomial distribution with parameters N (the number of trials) and p (the probability of success for each trial) is $m=N\cdot p$

Thus,

$m=5\cdot 0.68=3.4$

The variance of the binomial distribution is $s^2=Np(1-p)$ , where $s^2$ is the variance of the binomial distribution, so

$s^2=5\cdot 0.68\cdot (1-0.68)=3.4\cdot 0.32=1.088$

The standard deviation $s$ is the square root of the variance $s^2,$ so

$s=\sqrt{1.088}\approx 1.0431$

3 0

3 years ago

A village lost 15% of its cows in a flood and 10% of the remainder died of

Free_Kalibri [48]

Answer:

10000 cows.

Step-by-step explanation:

Remainder before the 10% loss: (7650/9) x 10 = 8500

Total before any losses : (8500/85) x 100 = 10000

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4 years ago

What is the quotient of 25÷6

timama [110]

25 is the quotient I think haven't done this in 5 years

7 0

3 years ago

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