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Sever21 [200]
3 years ago
12

Using tiles to multiply two binomials

Mathematics
1 answer:
telo118 [61]3 years ago
5 0
Using the FOIL method, we can solve for (x - 2)(x - 3)
First, Outside, Inside, Last

x(x) = x²
x(-2) = -2x
x(-3) = -3x
-2(-3) = 6

x² - 2x - 3x + 6 = x² - 5x + 6

since it is suppose to be 6 positive boxes (+) instead of six negative boxes (-), i believe your answer is: B, even though i'm not all that sure how the boxes work. But choose the answer that will help you get x² - 5x + 6

hope this helps
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A chemist needs 90 milliliters of a 25% solution but has only 16% and 43% solutions available
Stels [109]
Let f be amount of 43% and  s be amount of 16%...

s+f=90, f=90-s

(.16s+.43f)/90=.25  using f found above we get:

(.16s+.43(90-s))/90=.25

.16s+38.7-.43s=22.5

-.27s=-16.2

s=60, and since  f=90-s, f=30

So the chemist will need to mix 60ml of 16% solution with 30ml of 43% solution to create 90ml of a 25% solution.








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