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# my question is that ligament is a connection of bone to bone so why it is present in liver ? (answer)

You are correct in that ligaments hold bone to bone in a joint, but they also are the connective tissue that holds organs in place. Dictionaries define ligaments as tough, flexible, fibrous tissues that connect bones at a joint or hold organs in place.   Hope this helps  ...

# What is the speed? (answer)

Good evening! This is commonly referred to as a "dirt" problem. D=rt (distance =rate times time). Since the time is the same, rearranging the equation we get t=D/r, so the distance upstream divided by the rate is equal to the distance downstream divided by the rate. The rate downstream...

# help with krypton (Kr) and periodic table (answer)

Good evening! Yes, the answer is "a". The mass shown on the periodic table is the average of all isotopes of an element (taking into account the relative abundances of each isotope.   Yes, the answer is "d". If you look at columns, those "families" all...

# on the right is an illustration of a tap root. what is the function of the small root hairs that branch off the main root? (answer)

The root hairs are extensions of the cells of the epidermis of the root. The primary function is to increase the overall surface area of the cells. They are the mechanism by which plants are able to absorb water and dissolved minerals.   Hope this helps   Mike

# Is (-1,-3) a solution of 5x+4=-17 and 2x-y-1 (answer)

Good afternoon. You simply plug in the values into the equation and test the inequality.   5(-1) +4(-3) = -17? -5 + -12 =-17 -17=-17   correct   2(-1) - (-3) = 1 -2 - -3 =1 -2+3=1 1=1   correct   So...

Force is mass times acceleration. F=ma. The force is the same (presuming no energy is lost converting from the hammer to the stake, which is not precisely true, but usually too small to significantly affect the result). Therefore mass of hammer times acceleration is equal to mass of stake times...

Hi! The formal definition of a valid scientific hypothesis is an educated explanation of a phenomenon based on prior information, previous knowledge, or other such support. Not to argue with Lewis, but the correct answer (at least from the position of life sciences) is all of the above.   Hypotheses...

# x^2+8x-20=0 Solve using any method (answer)

Hi! Since the coefficient of the x^2 is 1 (1x^2), you have a quick method to do this. First identify the factors of 20 in pairs (20*1, 10*2, 5*4)   Now which pair when added or subtracted from each other gives you 8? 20+1=21, 20-1=19, 10+2=12, 10-2=8, 5+4=9, 5-4=1   You...

# a long distance runner covers 2 3/4 miles in 2/5 hour. How many miles can the runner cover in 1 hr? (answer)

Hi! One way to answer this questions is to look at it this way: 2 3/4 mile = 2/5 hour   First I would convert 2 3/4 mile into an improper fraction 2 3/4 = 11/4     (4*2 +3)   If you want 1 hour, you would need to multiply the hour side of...

# s the number of eggs that hatch in each aquarium. independent variable(s) dependent variable list 3 variables that should be held constant: control group(s) (answer)

Hi! The indep. variable is the factor that the scientist can and does alter or manipulate (change). It is what determines the outcome. In this case, that would be the water temperature. The depend. variable is what is altered by the independ. variable. The water temperature affects hatching rates...

Presuming these events are all independent and cover all possibilities, this is an exercise in and/or probabilities. Basically keep in mind that and means to multiply, or means to add.   For Christmas to be dry, it could be clear and dry or cloudy and dry: 0.2+0.3 = 0.5   For...

# toll for a car and trailer on a turnpike is 1/2 times the toll for a car alone if the toll for a car and trailer is 1.05 what is the toll for a car alone (answer)

Good evening! If you assume the car's toll is "X", then the trailer would be 0.5X. The car and trailer would be X + 0.5X, or a total of 1.5X.   1.5X = \$1.05   Divide both sides by 1.5   1.5X/1.5 = \$1.05/1.5   X= \$0.70   So...

Good evening! I can help with this. Basically, you need to get the X alone on one side of the equation. So if you subtract 1/6 from the left side of the equation, you have X+1/6-1/6, which becomes X.   What you do to one side of the equation you must do to the other to keep them...

When dealing with exponents, you need to remember PEMDAS and step-down. When you multiply factors with exponents, you "step down" when dealing with the exponent and would add them. When you raise a power to another power, you "step down" and multiply exponents.   So,...

# The width of a rectangle is 31 centimeters. Find all possible values for the length of the rectangle if the perimeter is al least 692 centimerts (answer)

Good morning! Recall that perimeter of a rectangle is the sum of the lengths of all sides, so:   P= L + L + W + W, or P + 2L + 2W   If the width is 31 and total perimeter is at least 692, then the minimum would be:   692 = 2L +...

# A theater sold a total of 240 tickets for a show, some of which were adult tickets and the rest child tickets. An adult ticket cost \$15 and a child ticket cost (answer)

Good morning! While work type problems can seem overwhelming, the idea is to go through one piece at a time. While 240 tickets (both adult and child) were sold, you do not know how many of each. However you do know that adult tickets + children tickets = 240   In math...

# There are two places in a plant cell where you will find electron transport chains. where are they? (answer)

Good morning. There are electron transport chains in both photosynthesis (leading to formation of ATP and NADPH energy carriers) and aerobic respiration (oxygen is the final electron acceptor, forming water, during chemiosmosis is the primary source of ATP).   Therefore, the direct...

# the bacteria in a 8-liter container double every minute. After 55 minutes the container is full. how long did it take to fill the container. (answer)

If I am understanding the question correctly, 55 doublings will give you the full 8 L. Therefore, 2^55 = 8L   How long did it take to get 4L?   8L/2 = 4L. What you do to one side of an equation, you need to do to the other, so you would need to find 2^55 /2   This...