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3 years ago

Which number rounds to 4.3 when rounded to the nearest tenth?

Mathematics

2 answers:

Luden [163]3 years ago

7 0

There are multiple numbers. One example: 4.29
At least I think that's the answer...not sure tho

JulsSmile [24]3 years ago

5 0

Answer:

100

Step-by-step explanation:

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In a survey, 27 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped

tatiyna

Answer: (29.4, 32.6)

Step-by-step explanation:

From the question, we know that

Sample size (n) = 27

Sample mean (x) = $31

Sample standard deviation (s) = $3

We are to construct a 99% confidence interval interval for average amount spent on gift.

The formulae for constructing a 99% confidence interval for population mean is given as

u = x + tα/2 × s/√n...... For upper limit

u = x - tα/2 × s/√n...... For lower limit

tα/2 is the critical value for a 2 tailed test. This value of gotten from a t distribution table by checking the degree of freedom ( 27 - 1 = 26) against the level of significance ( 100% - 99% = 1%).

Hence tα/2 = 2.779

Let us substitute our parameters and solve

For lower limit

u = 31 - 2.779 × 3/√27

u = 31 - 2.779 ( 0.5773)

u = 31 - 1.6045

u = 29.4

For upper limit

u = 31 + 2.779 × 3/√27

u = 31 + 2.779 ( 0.5773)

u = 31 + 1.6045

u = 32.6

Hence the 99% confidence interval for population mean is given as 29.4, 32.6

6 0

3 years ago

Read 2 more answers

Rational numbers that are not integers and whole numbers that aren't integers.

Nataly [62]

Whole number can be a integer. rational number can not be a integer that is repeating.

8 0

3 years ago

Which property was applied to create this equivalent expression? 7 x (5 6 x) right-arrow (7 x 5) 6 x the commutative property on

krok68 [10]

The option (B) is correct. Associative property was applied to create the given expression.

Given expression is 7x+(5+6x) rightarrow (7x+5)+6x.

Firstly, check the given expression by commutative property.

The commutative property of addition is a+b=b+a and the commutative property of multiplication is a×b=b×a.

The commutative property didn't satisfy the given expression.

Now, check the given expression by associative property.

The associative property of addition is (a+b)+c=a+(b+c) and the commutative property of multiplication is (a×b)×c=a×(b×c).

The associative property of addition satisfy the given expression.

Further, check the given expression by distributive property.

The distributive property is a×(b+c)=ab+bc.

The distributive property didn't satisfy the given expression.

Hence, the given expression 7x+(5+6x) rightarrow (7x+5)+5x s created by the associative property.

Learn more about associative property from here brainly.com/question/10628093

#SPJ4

8 0

2 years ago

Read 2 more answers

A taxi charges 1.75 plus a fee of 0.75 for each mile traveled the total cost of a ride without a tip is 4.75 how many miles is t

mixas84 [53]

Answer:

4 miles

Step-by-step explanation:

Subtract the initial fee from the final fee. You get 3.00

Divide 3.00 by .75 and you end up with 4, which is the amount of miles traveled.

4 0

3 years ago

Relative density was determined for one sample of second-growth Douglas fir 2 x 3 4s with a low percentage of juvenile wood and

Citrus2011 [14]

Answer:

0.03865

Step-by-step explanation:

Since the true density for the two types of trees are given, we would evaluate the average for both of them

Low percentage of juvenile wood density = 0.523 and 0.0543

Average density = 0.523 + 0.0543/2

Average density = 0.55015

Moderate percentage of juvenile wood density = 0.489 and 0.0450

Average density = 0.489 + 0.0450/2

Average density = 0.5115

Therefore, difference in true average density for the two woods are = 0.55015 - 0.51150

= 0.03865

5 0

3 years ago