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-BARSIC- [3]
2 years ago
10

Her Packet.pdf + 127% 7. Approximately 4% of the population has blonde hair, and 10% of the population has blue eyes. If 75% of

people with blonde hair have blue eyes, what percent of the population has blue eyes without blonde hair? Show your work. ​
Mathematics
1 answer:
Elena-2011 [213]2 years ago
3 0

Using proportions, it is found that 7% of the population has blue eyes without blonde hair.

10% of the population has blue eyes. These 10% are composed by:

  • 75% of 4%(have blonde hair).
  • x% of 96%(do not have blonde hair)

Hence, the relation according to the proportion of 10% is:

0.75(0.04) + 0.96x = 0.1

x = \frac{0.1 - 0.75(0.04)}{0.96}

x = 0.0729

Out of the entire population:

0.0729(0.96) = 0.07

7% of the population has blue eyes without blonde hair.

You can learn more about proportions at brainly.com/question/24372153

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Brian is buying some tickets for his family to go to a concert. The normal ticket price for one person is £120. There are discou
Lorico [155]

Answer:

30% of 120

= 0.3*120

= 36

120 - 36 = 84 (discounted adult ticket)

60% of 120

= 0.6*120

= 72

120 - 72 = 48 (discounted childrens ticket)

84*2 = 168

48*3 = 144

168 + 144 = 312

he pays 312

Step-by-step explanation:

8 0
2 years ago
A³b² a²b simplify the following expression
liberstina [14]

Answer:

a^{5}b^{3}

Step-by-step explanation:

The law of indices can be used to simplify mathematical expressions involving  arithmetical operation on variables with powers.

a^{m} x a^{n} = a^{(m+n)}

Thus, the given expression can be simplified as follows:

a³b² a²b  = a³ x a² x b² x b^{1}

               = a^{3+2} x b^{2+1}

               = a^{5}b^{3}

Thus,

a³b² a²b  = a^{5}b^{3}

7 0
2 years ago
Isamu decided to use blocking to deal with an extraneous factor in his experiment. what will blocking do to the subject in his e
Olegator [25]

Answer:

b. divide them into groups based on similarities

Step-by-step explanation:

Blocking is a method in statistics used to reduce the effect of nuisance variables in an experiment. Nuisance variables are those factors that could result in variations during the experiment. During blocking, subjects with similar features are grouped in the same block, and treatment is then administered to each of these subjects. In order to form blocks, blocking factors are used.

Blocking factors can affect the results of an experiment but they are of no importance to the experimenter. An example of a blocking factor is age.  So, for Isamu who seeks to use blocking to deal with an extraneous factor in his experiment, blocking would enable him to divide his subjects into groups based on similarities.

4 0
3 years ago
Five times the sum of a number and 6 is 48
MissTica
5(n+6)=48

5n+30=48

5n=18

n=18/5
4 0
2 years ago
What is 23 3/8 as a decimal
Oksanka [162]
Im not smart im not that sure of my answer but 23.3
6 0
3 years ago
Read 2 more answers
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