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4 years ago

X+3 divided by 5=30 i need help

Mathematics

2 answers:

8090 [49]4 years ago

3 0

Answer:

x = 147

147 + 3 = 150

150 ÷ 5 = 30

Svetach [21]4 years ago

3 0

Answer:

See answer in the explanation below.

Step-by-step explanation:

x = 147

147 + 3 = 150

150 ÷ 5 = 30

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P-value test and Ctitical Value test are identical. P-value and Critical value are two different names for the same steps. They

creativ13 [48]

Answer:

Option B - False

Step-by-step explanation:

Critical value is a point beyond which we normally reject the null hypothesis. Whereas, P-value is defined as the probability to the right of respective statistic which could either be Z, T or chi. Now, the benefit of using p-value is that it calculates a probability estimate which we will be able to test at any level of significance by comparing the probability directly with the significance level.

For example, let's assume that the Z-value for a particular experiment is 1.67, which will be greater than the critical value at 5% which will be 1.64. Thus, if we want to check for a different significance level of 1%, we will need to calculate a new critical value.

Whereas, if we calculate the p-value for say 1.67, it will give a value of about 0.047. This p-value can be used to reject the hypothesis at 5% significance level since 0.047 < 0.05. But with a significance level of 1%, the hypothesis can be accepted since 0.047 > 0.01.

Thus, it's clear critical values are different from P-values and they can't be used interchangeably.

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3 years ago

It takes a person 50 minutes to get to campus. He spends t minutes walking to the bus stop and the rest of the time riding the b

amid [387]

Answer:

16.2

Step-by-step explanation:

cause. ur a noob at math

8 0

3 years ago

The average rainfall for each week for the last 4 weeks was 7/12 inch. How much rain fell during the last 4 weeks?

kenny6666 [7]

7/12 times 4 is 2 1/3. So 2 1/3 inches each week

8 0

4 years ago

Please help ill give you 50 points

Verdich [7]

a. 3 × 10^0

b. 33. 6 × 10^0

c. 57. 6 × 10^2

d. 4. 0 × 10^-7

e. 7. 0 × 10^-1

<h3>What is scientific notation?</h3>

Scientific notation is simply a way of expressing numbers that are too large or small to be written in decimal form.

It may be referred to as standard index form or scientific form.

From the information given, we have;

a. 0. 000003 is written in standard form as;

= 3 × 10^-6 × 3 × 10^6

= 3 × 10^-6 + 3

= 3 × 10^0

= 3

b. 56, 000, 000. 00 is written in standard form as;

= 5. 6 × 10^7 × 6 × 10^-7

= 33. 6 × 10^7 -7

= 33. 6 × 10^0

= 33. 6

c. 8. 0 × 10^-3 × 7. 2 × 10^5

= 57. 6 × 10^-3 + 5

= 57. 6 × 10^2

d. 4. 0 × 10^-3 × 4. 0 × 10^-4

= 4. 0 ^ -3 +(-4)

= 4. 0 × 10^-7

e. 7. 0 × 10^3 × 7. 0 × 10^4

= 7. 0 × 10^ 3-4

= 7. 0 × 10^-1

Thus, scientific notation is also referred to as standard form.

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5 0

2 years ago

Five students, adriana, ben, chandra, diana, and ernesto, would each like one of the four spots at the regional science fair. Th

krok68 [10]

The theoretical probability that Chandra will be chosen as one of the science fair participants is 0.8 or 80%.

<h3>What is theoretical probability?</h3>

Theoretical probability of an event is the ratio of number of favourable outcome to the total expected number of outcome of that event.

Five students, Adriana, Ben, Chandra, Diana, and Ernesto, would each like one of the four spots at the regional science fair.

Their names are placed in a hat, and four names are chosen at random to decide who attends the fair.

The total number of names are 5.
The total number of names chosen are 4.

The total number of ways 4 names can be taken out from 5 names is,

$^5C_4$ .

Here one spot needs to be fixed for Chandra. Now the total number of outcome remain 4 and favourable outcome remain 3.

Thus, the number of ways 4 names can be taken out such that it contains the name Chandra is

$^4C_3$ .

The theoretical probability that Chandra will be chosen as one of the science fair participants is,

$P=\dfrac{^4C3}{^5C4}\\P=\dfrac{4}{5}\\P=0.8\\P=80\%$

Thus, the theoretical probability that Chandra will be chosen as one of the science fair participants is 0.8 or 80%.

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2 years ago