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2 years ago

Which point on the number line represents the product (5)(-2)(-1)2

Mathematics

2 answers:

Thepotemich [5.8K]2 years ago

5 0

The Right Answer:

We need to mutiply all the numbers.

5*-2 = -10

-10*-1 = 10

The Wrong Answer:

(-2)*(-1) gives +2 (a negative number multiplied for another negative gives a positive number).

2*5 = +10

jekas [21]2 years ago

5 0

Answer:THE CORRECT ANSWER IS (A.)

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During a 5-kilometer run to raise money for the school band, Tabitha ran 0.08 kilometer per

Thepotemich [5.8K]

Answer:

True

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2 years ago

Exercise 6.12 presents the results of a poll where 48% of 331 Americans who decide to not go to college do so because they canno

tensa zangetsu [6.8K]

<h2>Answer with explanation:</h2>

As per given , we have

$\hat{p}=0.48$ , n=331

Critical value for 90% Confidence interval : $z_{\alpha/2}=1.645$

a) Confidence interval :

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$0.48\pm (1.645)\sqrt{\dfrac{0.48(1-0.48)}{331}}\\\\\approx 0.48\pm0.02746\\\\=(0.48-0.02746,\ 0.48+0.02746)\\\\=(0.45254,\ 0.50746)$

Hence, a 90% confidence interval for the proportion of Americans who decide to not go to college because they cannot a ord it : $(0.45254,\ 0.50746)$

b) Margin of error : E=1.5%=0.015

Formula for sample size : $n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

For p =0.48 , we have

$n=0.48(1-0.48)(\dfrac{1.645}{0.015})^2=3001.88373333\approx3002$

Hence, the required sample size to survey = 3002

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2 years ago

Un equipo de fútbol se conforma de cuatro líneas de jugadores: portero (9%), defensas (37%), medios (27%) y delanteros (27%), do

Tpy6a [65]

Answer:

According to the proble, the total number of goals are 1+11+15+23 = 50: 1 by the goalkeeper, 11 by defense, 15 by midfielders and 23 by strikers.

So, each probability can be found by using standard probabilities

$P=\frac{events}{total outcomes}$

<h3>(a) Defense</h3>

$P=\frac{11}{50} \approx 0.22$

Therefore, the defense has a probability of 22% of score that goal.

<h3>(b) Midfielders</h3>

$P=\frac{15}{50} \approx 0.30$

Therefore, midfielders have a probability of 30% of scoring that goal.

<h3>(c) Strikers.</h3>

$P=\frac{23}{50} \approx 0.46$

Therefore, strikers have a probability of 46% of scoring that goal.

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2 years ago

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SOVA2 [1]

Answer the answer to your question is $7.50

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To control pollination, pollen-producing flowers are often removed from the top of corn in a process called detasseling. The hou

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Answer: <u>Last option</u>

$Z_ {13} = 0.5,\ Z_ {17} = 2.5$

Step-by-step explanation:

The z-scores give us information about how many standard deviations from the mean the data are. This difference can be negative, if the data are n deviations to the left of the mean, or it can be positive if the data are n deviations to the right of the mean.

To calculate the Z scores, we calculate the difference between the value of the data and the mean and then divide this difference by the standard deviation.

$Z = \frac{x- \mu}{\sigma}$ .