All categories

3 years ago

What is the value of the expression below? 7 divided by 2 minus 4.5 x times 3 + 8

Mathematics

2 answers:

Vesnalui [34]3 years ago

7 0

Answer:

the answer is 5

Step-by-step explanation:

$7 \div 3 = 3.5$

$3.5 - 4.5 = - 1$

$- 1 \times 3 = - 3$

$- 3 + 8 = 5$

melomori [17]3 years ago

7 0

Answer:

The answer is 5

Step-by-step explanation:

You might be interested in

There are 69 cards in a card game deck. How many cards in 7 decks?

nevsk [136]

Answer:

69×7=60×7+9×7 and if 10×7=70 then 6×70=420 and 9×7=70-7=63

7 0

3 years ago

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not. Determ

Hunter-Best [27]

Answer:

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

A recent survey showed that among 100 randomly selected college seniors, 20 plan to attend graduate school and 80 do not.

This means that $n = 100, \pi = \frac{20}{100} = 0.2$

68% confidence level

So $\alpha = 0.32$ , z is the value of Z that has a pvalue of $1 - \frac{0.32}{2} = 0.84$ , so $Z = 0.995$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 - 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.16$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2 + 0.995\sqrt{\frac{0.2*0.8}{100}} = 0.24$

The 68% confidence interval for the population proportion of college seniors who plan to attend graduate school is (0.16, 0.24).

4 0

3 years ago

A one year membership to a health club costs $480. This includes a $150 fee for new members that is paid when joining. Which equ

antoniya [11.8K]

Hi Dwfailla,

To get the answer we need to add $480 and $150. So, $480 + $150 would be your equation.

Hope This Helps!

Cupkake~

3 0

4 years ago

Read 2 more answers

Find the possible value or values of r in the quadratic equation r^2-7r-8=0

tester [92]

I hope this helps you

6 0

3 years ago

Two fair dice are tossed.

poizon [28]

there are 6 possibilities on each dice. Therefore 6 x 6 = 36 possible outcomes.

What is the probability that the sum of the number of dots shown on the upper faces is equal to 7?

1,6 2,5 3,4 4,3 5,2 6,1 there are 6 possible ways to get 7

6/36 = 1/6 = .1666...

What is the probability that the sum of the number of dots shown on the upper faces is equal to 11?

5,6 6,5 there are 2 possible ways to get 11

2/36 = 1/18 = .0555...

What is the probability that you roll "doubles" that is, both dice have the same number on the upper face?

1,1 2,2 3,3 4,4 5,5 6,6 there are 6 possible ways to get doubles

6/36 = 1/6 = .1666...

What is the probability that both dice show an odd number?

1,1 1,3 1,5 3,1 3,3 3,5 5,1 5,3 5,5 there are 9 possible ways that both dice show an odd number

9/36 = 1/4 = .25

5 0

3 years ago