answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
TEA [102]
2 years ago
13

A piece of metal with a length of 2.83 cm was measured using four different devices. Which of the following measurements is the

most accurate? 2.837 cm 2.829 cm 2.812 cm 2.805 cm
Biology
1 answer:
Harman [31]2 years ago
6 0

Answer:

The most accurate measurement is 2.829 cm.

Explanation:

We can round the decimals to a certain accuracy in order to make further calculations easier.To round a number to the nearest hundredth ,check the next place value to the right (the thousandths). If it's less than 5, remove all the digits to the right. If the place value is 5 or greater than 5, just add 1 to the previous digit (the hundredths place digit) and drop all other digits to the right.

In other words, to round off a decimal number, the procedure is as follows; if the digit to the right of the required number is a 5 or greater, add 1 to previous digit and drop all the remaining digits.  If the required number is less than 5, do not change the previous digit and remove all the remaining digits.

Here, a piece of metal with a length of 2.83 cm was measured using four different devices. The obtained measurements are 2.837 cm, 2.829 cm, 2.812 cm and 2.805 cm.

Thus, the first measurement 2.837 cm can be round off to 2.84 cm. The second measurement 2.829 cm can be round off to 2.83 cm. The third measurement 2.812 cm can be round off to 2.81 cm and the fourth measurement 2.805 cm can be round off to 2.81 cm.

So the most accurate measurement is the second one, 2.829 cm which can be round off to 2.83 cm.

You might be interested in
Which element acts as a hydrogen acceptor during aerobic respiration?
Andre45 [30]
The answer is C. oxygen. Oxygen is the acceptor for hydrogen because in an aerobic reaction oxygen is used.
3 0
1 year ago
Read 2 more answers
Mendel performed a cross between individuals heterozygous for three different traits: green versus yellow seeds (green is domina
malfutka [58]
Probability of Green seed * Red flowers * Green pods

3/4 * 3/4 * 3/4 =27/64
3 0
2 years ago
Describe the benefits to using tissue cultures to study medications used for treating cancer cells.
Sedbober [7]
Experimental cancer treatments are medical therapies intended or claimed to treat cancer ... However, combining the therapy with chemotheraputic treatments can help too ... Another strategy is to use anaerobic bacteria that have been transformed ... skin cancer cells showed significant mortality. 
5 0
1 year ago
Read 2 more answers
The cell cycle what controls the life and development of a cell answers
Yuri [45]
The Cell Cycle<span>. What </span>controls the life and development of a cell? Why? An old piece of poetry says “to everything there is a season... a time to be born, a time to die.” Forcells<span>, the line might say “a time to divide and a time to grow.” In multicellular organisms, different types of </span>cells<span> have different roles and need to complete ...</span>
7 0
2 years ago
How many contractions per minute were required for the paramecium to maintain a relatively stable internal solute concentration
Phoenix [80]

Answer:

abt 24 contraction per min is needed to maintain a relatively stable internal solute conc.

paramecium maintain its volume by preventing itself from shrinking by holding in as much water as it can.

When the water solute concentration is reduced, the number of vacuole contractions will increase. But when the water solute concentrations rise, the number of vacuole contraction will decrease.

When the number of vacuole contractions will increase, the water solute concentration is reduced. But when the water solute concentrations rise, the number of vacuole contraction will decrease. So it is cetris paribus, means when the one is increase the other one will decrease.

8 0
2 years ago
Other questions:
  • Assume that a single layer of phospholipids coat the water in a beaker. which part of the phospholipid molecule will face the ai
    6·2 answers
  • A scientists wishes to determine whether or not a marine ecosystem underwent primary or secondary succession in the past. What e
    7·1 answer
  • Part C - How an action potential affects Ca2+ movement in a muscle cell The sarcoplasmic reticulum is a specialized form of ER t
    10·1 answer
  • Suppose you use a microscope to look at a cell from the skin of an onion. Which structure will you see that would not be found i
    7·2 answers
  • The table below shows the role of different substances during photosynthesis. Substance Role During Photosynthesis Glucose Store
    15·1 answer
  • In pea plants being tall (T) is dominant over being short (t). Also in pea plants having green pods (G) is dominant over yellow
    8·1 answer
  • 2. Mendel focused on traits that had two alleles (A or a) in which one was dominant and the other was recessive. Yet many genes
    14·1 answer
  • For your internship at the local zoo, you have been assigned to help with the new orangutan-breeding program. Little is known ab
    7·1 answer
  • You watch a scientist dissolve some sugar in a liter of water and then place some of this
    10·1 answer
  • When water dissolves a substance, weak charges on water molecules attract oppositely charged portions of the substance, pulling
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!