Chapter 1: Q. 1.48 (page 23)
Write each of the following in scientific notation:
a.
b.
C.
d.
Short Answer
a. The scientific notation of is .
b. The scientific notation of is .
c. The scientific notation of is .
d. The scientific notation ofis.
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Chapter 1: Q. 1.48 (page 23)
Write each of the following in scientific notation:
a.
b.
C.
d.
a. The scientific notation of is .
b. The scientific notation of is .
c. The scientific notation of is .
d. The scientific notation ofis.
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Identify each activity, a to f, as an observation, a hypothesis, an experiment, or a conclusion. Lucia wants to develop a process for dyeing shirts so that the color will not fade when the shirt is washed. She proceeds with the following activities:
a. Lucia notices that the dye in a design fades when the shirt is washed.
b. Lucia decides that the dye needs something to help it combine with the fabric.
c. She places a spot of dye on each of the four shirts and then places each one separately in water, saltwater, vinegar, and baking soda and water. d. After one hour, all the shirts are removed and washed with a detergent.
e. Lucia notices that the dye has faded on the shirts in water, saltwater, and baking soda, whereas the dye did not fade on the shirt soaked in vinegar.
f. Lucia thinks that the vinegar binds with the dye so it does
not fade when the shirt is washed.
Classifyeachofthefollowingasanobservation,ahypothesis,
an experiment, or a conclusion:
a. A big log in the fire does not burn well.
b. If I chop the log into smaller wood pieces, it will burn better.
c. The small wood pieces burn brighter and make a hotter fire.
d. The small wood pieces are used up faster than burning the big log.
A "chemical-free" shampoo includes the following ingredients: water, cocamide, glycerin, and citric acid. Is the shampoo truly "chemical-free"?
For each of the following, indicate if the answer has a positive or negative sign:
a. A negative number is subtracted from a positive number.
b. Two negative numbers are divided.
a. What is measured on the horizontal axis?
b. What is the range of value on the horizontal axis?
c. What is the temperature of the tea after min?
d. How many minutes were needed to reach a temperature of ?

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