Science hw
caelyn wanted to find out what shampoo made her hair the shiniest . everyday she washed her hair with different shampoos and then rated how shiny her hair was, on a scale from 1-10. she used pantene, herbal essences, l’oreal, and just water.
independent variable:
dependent variable:
control:
constant:

The correct answer will be option-

1. Independent Variable: brands of shampoo

2. Dependent Variable: shining of the hair

3. Control: sample without any treatment of shampoo.

4. Constant: amount of water and the shampoo

Step-by-step explanation:

In a scientific experiment, three important types of  variables are studied which are:

1. Dependent Variable: The variable which has to be studied in the experiment which in the given question is the shining of the hair

2. Independent Variable: the variable which when modified control and influences the dependent variable which is brands of shampoo

3. Constant: The variable which remains same or constant throughout the experiment which is the amount of water and the shampoo

Also, the samples of an experiment are divided into two groups:

1. Experimental group: samples in which the variable to be studied is included

2. Control group: the group in which the key variable is not present and thus acts as a reference to the experimental group like the sample without any treatment of shampoo.

a. is correct

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation: