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goldenfox [79]
3 years ago
12

A baby’s weight increases by 8% over a month from birth to 4.05kg, what is the weight at birth?

Mathematics
2 answers:
jeka57 [31]3 years ago
7 0

Answer:

Hi, There! ~Jay here~ There Are 2 Possible Answers to your Question!

<u><em>3.726 Is The correct Answer</em></u>

Step-by-step explanation:

4.05/ 0.92 = 3.726kg

Hope this Helps!

mixas84 [53]3 years ago
5 0

Answer:

3.726 or 3.75

Step-by-step explanation:

4.05-8%=3.75

*VirtuosoTeen*

Good luck on your assignment & enjoy your day!

*RosalindCordelia:)

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Jason decided to look at new trucks. Jason found a used truck for 34,000 dollars. A new truck is 40,000 dollars so what percent
nexus9112 [7]

Answer:

Percent of rise of a new truck on a used truck  = 15%

Step-by-step explanation:

Let x be the percentage of saved money if Jason buying a used truck.

Given:

Price of the used truck = $34,000

Price of the new truck = $40,000

We need to find the percent of rise Jason saves on a used truck rather than buying a new truck

Solution:

Using a percentage formula.

percentage\ cost = \frac{(100-x)}{100}\times Original\ cost

Substitute Percentage cost = 34,000 and Original cost = 40,000 in above formula.

34000 = \frac{(100-x)}{100}\times 40000

34000 = (100-x)\times 400                    (\frac{40000}{100}=400)

Using cross multiplication rule.

(100-x)=\frac{34000}{400}

85=100-x

x = 100-85

x = 15%

Therefore, Jason used 15% rise of a new truck for a used truck.

6 0
3 years ago
(Small sample confidence intervals for a population mean) suppose you are taking a sampling of 15 measurements. you find that x=
Luda [366]

Answer:

The 99% confidence interval is  71.67 < \mu < 78.33

Step-by-step explanation:

From the question we are told that

     The sample  size  is  n  =  15

      The  sample  mean is  \= x  =  75

        The  standard deviation is  s =  5

 Given that confidence is  99%  then the level of significance is mathematically represented as

              \alpha  =  100 -  99

             \alpha  =  1\%

             \alpha  =  0.01

Next we obtain the critical values of  \frac{ \alpha }{2} from the normal distribution table

   The  value is

                  Z_{\frac{ \alpha }{2} } = 2.58

Generally the margin for error is mathematically represented as

            E =  Z_{\frac{ \alpha }{2} } *  \frac{ s}{ \sqrt{n} }

=>         E =  2.58  *  \frac{ 5}{ \sqrt{15} }

=>         E =  3.3307

   The  99% confidence interval is mathematically represented as

             \= x  -E  <  \mu  <  \= x  +E

=>          75 -  3.3307 <  \mu

=>          71.67 < \mu < 78.33

3 0
3 years ago
A group of 31 friends gets together to pay a sport. First, people must be divided into teams. Each team has to have exactly 3 pl
Monica [59]

Answer:

10 teams (1 remainder)

Step-by-step explanation:

if each team has 3 players and there are 30 friends, divide that and youll end up with 10 teams. you will also have 1 remaining player

5 0
2 years ago
The measure of xy is 124 what is the measure of xyz the tangent chord angle
RUDIKE [14]

Answer:

62

Step-by-step explanation:

i checked it on apex.

3 0
3 years ago
Read 2 more answers
What sum is represented by the arrow diagram?
Julli [10]

Answer:

Would it be 1?

Step-by-step explanation:

I'm not that sure but it seems it goes up to 4 so 4- -3 = 1. Exuse me if my wrong..

4 0
3 years ago
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