Let r = # of red marblesLet 2r = # of blue marbles ... (1/2 as many red as blue, means blue is twice the red)Let r+8 = # of yellow marbles ... (8 more than the red) Total is 56 ... our equation is r + 2r + r + 8 = 56 4r + 8 = 56 4r = 56 - 8 4r = 48 r = 12 There are 12 red marbles.There are 24 blue marbles.There are 20 yellow marbles.
Answer:
B) Experiment: you imposed a treatment (new fertilizer on some plants, old on others) to determine its effect.
Step-by-step explanation:
In this situation, the fertilizer developer wants to evaluate a hypothesis, not just observe, by subjecting plants to two different treatments (new and old fertilizer) in order to determine which treatment provides a more desirable effect (more plant growth).
This process configures an experiment.
The answer is alternative B)
I assume that you mean the *numeral* 7, the written for of the number in a common font.
<span>This has no symmetry. In an extreme case, with the top extended to be the same length as the slant stroke, and restricting both to simple line segments, *then* you would have symmetry across a line bisecting the angle.</span>
Answer:
the number of student that took the test is missing
I think it is 100?
79 is 1 sigms (1 standard deviation) above the mean....
1 sd is 84% ... 16% are above the 79
multiply the students that took the test by .16
Step-by-step explanation:
Answer:
-9/14 so the answer is B
Step-by-step explanation:
Hope this helps