# Posts by Kaela

Total # Posts: 17

chemistry
saline solution mass is 53.0 at 4 degrees equal volume of water, same temp had a mass 51.5g what is the density of the saline solution?

Math
A multiple - choice quiz contains 5 questions with 4 choices for each answer. A student passes the quiz if they get at least an 80% on the quiz . If a student guesses on every question , find the probability that she passes the quiz . I have tried c(20,8)(1/4)^8(3/4)^12 c(20,9...

math
The Actual Answer is: 1 to 3 ,1/3 , and lastly 1:3

Science
1. When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature B. laboratory experiments C. extensive fossil collections D. genetic sequences 2. How did Darwin and Lamarck differ in their thinking about change ...

Arithmetic
A bag of marbles has twice as many blue marbles as green marbles, and the bag has at least 54 marbles in it. At least how many green marbles does it have in it?

math
For a geometric series, S4/S8= 1/17, determine the first three terms of the series.

Science
120 miles.

Chemistry
If 22.15 milliliters of 0.100 molarity sulfuric acid is required to neutralize 10.0 milliliters of lithium hydroxide solution, what is the molar concentration of the base?

Mathematics, Math
During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was \$56, find its price after the shortage was over. Would it have been ...

Mathematics, Math
During a period of acute shortage of raw materials, the prices of some manufactured goods were raised by 25%. After the shortage was over, prices were lowered by 15%. If the original price of an article was \$56, find its price after the shortage was over. Would it have been ...

English
d is supposed to be internal

Personal Project :)
Hey I'm Kaela, 9th grade and we're required to do a mini personal project. I can't decide on what to do :/ Anyone help? I'm interested with models, runways, model photo shoots, etc etc. :)

Use the following Info. At sea level the speed of sound in air is linearly related to air temp. If 35 degrees Celsius sound travels at a rate of 352meters per sec. if 15degrees Celsius sound travels at 340 meters per sec. How would i write a linear equation that models speed ...

math
lcm of two #s is 60. one of the #s is 20. other # is even & has only two prime factors. what is the other number? & how did u get the answer?

ecology
what is the role of prouducers in a ecosystem

calcq
2- The earth’s atmospheric pressure p is often modeled by assuming that the rate dp/dh at Which p changes with the altitude h above sea level is proportional to p. Suppose that the pressure at sea level is 1013 millibars (about 14.7 pounds per square inch) and that the ...

nucleus true facts
i need facts on the nucleus

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