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Leokris [45]
3 years ago
15

30 inch is increased by 30%

Mathematics
2 answers:
Sphinxa [80]3 years ago
5 0
If you are asking how much it is increased, it is 39.
stira [4]3 years ago
4 0
30inch increased by 30% = 30 × 130%
39inches
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According the the U.S. Department of Education, full-time graduate students receive an average salary of $15,000 with a standard
Firdavs [7]

Answer:

Step-by-step explanation:

Given that :

population Mean = 15000

standard deviation= 1200

sample size n = 100

sample mean = 16000

The null and the alternative hypothesis can be computed as follows:

\mathtt{H_o : \mu = 15000 }\\ \\ \mathtt{H_1 : \mu >  15000}

Using the standard normal z statistics

z = \dfrac{\overline X - \mu}{\dfrac{\sigma }{\sqrt{n}}}

z = \dfrac{16000 -15000}{\dfrac{1200 }{\sqrt{100}}}

z = \dfrac{1000}{\dfrac{1200 }{10}}

z = \dfrac{1000\times 10}{1200}

z = 8.333

degree of freedom = n - 1 = 100 - 1 = 99

level of significance ∝ = 0.05

P - value from the z score = 0.00003

Decision Rule: since the p value is lesser than the level of significance, we reject the null hypothesis

Conclusion: There is sufficient evidence  that the Dean claim for his graduate students earn more than average salary of $15,000

5 0
3 years ago
PLEASE HELP!!!!
andre [41]

Answer:

f( 6,7)

Step-by-step explanation:

D(3,2), E(7.2), and F(6,7). If you translate DEF 3 units right and 3 units down, what are the coordainatrs of D'?are 6,7

3 0
3 years ago
When two fractions with different denominators are to be added using the standard procedure, which of these must first be found?
FromTheMoon [43]

Answer:

3. The LCD (Least Common Denominator) of the fractions

Step-by-step explanation:

This is the first step to do in order to be able to properly add the fractions.

6 0
3 years ago
suppose the population of a certain city is 5355 thousand. It is expected to decrease to 4566 thousand in 50 years. Find the per
xz_007 [3.2K]

Answer: 14.7338936% decrease

\frac{5355}{100} = \frac{4566}{x}

cross-multiply

85.2661064 = x

100 - 85.2661064 = 14.7338936

Check: 0.852661064 * 5355 = 4566

If permitted, you may round for a simpler (yet less precise and exact) answer.  For instance, rounding to the hundredths would make it ~14.73%.

5 0
3 years ago
Consider the statement "If Oscar eats Chinese food, then he drinks milk." a. Write the converse of the statement. b. Write the c
m_a_m_a [10]

Step-by-step explanation:

Consider the provided statement.

"If Oscar eats Chinese food, then he drinks milk."

Here p is Oscar eats Chines food and q is he drinks milk.

Converse is interchange the two statement.

Converse: "If Oscar drinks milk, then he eats Chinese food"

Contrapositive is negative both statement and interchanges them.

Part (b) Contrapositive: "If Oscar doesn't drink milk, then he doesn't eat Chinese food"

Part ( c) If the provided statement is true, then the contrapositive is always true because contrapositive is logically equivalent to the provided statement. If provided statement is false, then the contrapositive is always false.

Part (d) let the original statement is true, and we know that Oscar drinks milk, then we still would not be able to make any conclusion about his Chinese food eating habits.

Because the statement is true if "Oscar eats Chinese food" is true Oscar may or may not eat chines food.

The above converse may be false.

Part (e) Suppose the original statement is true, and that Oscar does not drink milk. It means Oscar doesn't eat Chinese food. Because if Oscar eats Chinese food, then according to the truth of the original statement "Oscar drinks milk" to be true which is the contradiction.

Thus, Oscar doesn't eat Chinese food.

3 0
3 years ago
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