3 years ago

On the teacher’s desk there were 5 boxes of pencils, j pencils in each. How many pencils were there on the desk?

Mathematics

1 answer:

sesenic [268]3 years ago

4 0

Answer:

Step-by-step explanation:

Multiply the number of boxes time the pencils in each box

You might be interested in

Evaluate 6n-2 for n=4.

kvasek [131]

Answer:

6n-2 = 22

Step-by-step explanation:

n = 4

6(4)-2

24-2

4 0

3 years ago

PLS help me with this question

Vinvika [58]

Answer:

80, 20 suvs in 45 vehicles, 45 is 1/4 of 180, so just multiply 20 times 4 and the answer you get is 80

4 0

3 years ago

The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.30, and the sample statistics

IrinaK [193]

Answer: 0.84

Step-by-step explanation:

let p be the population proportion of adults who smoked a cigarette in the past week.

As per given , we have

$H_a: p$

Sample size : n= 1491

The sample proportion of adults smoked a cigarette= $\hat{p}=\dfrac{x}{n}=\dfrac{462}{1491}=0.30985915493\approx0.31$

The test statistic for proportion is given by :-

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

Substitute all the values , we get

$z=\dfrac{0.31-0.30}{\sqrt{\dfrac{0.30(1-0.30)}{1491}}}\\\\=\dfrac{0.01}{\sqrt{0.000141}}\\\\=\dfrac{0.01}{0.011874342087}=0.84261497731\approx0.84$

Hence, the value of the test statistic = 0.84

6 0

3 years ago

You are doing a case study of the death of John F Kennedy. You employ many data collection methods in

k0ka [10]

Answer:

B. Of the people surveyed that were alive at the time, 90% of them knew exactly where they were when they heard the news.

Step-by-step explanation:

4 0

2 years ago

Find the roots of parabola given by the following equation

riadik2000 [5.3K]

Answer:

3/2

-3

Step-by-step explanation:

here

5 0

3 years ago