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strojnjashka [21]
3 years ago
13

What is the solution set for 4x - 3= 2x +5, given the replacement set {2, 3, 4, 5}?​

Mathematics
1 answer:
Natalija [7]3 years ago
4 0

Answer:

the answer here is number 4

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If a 150 pound woman would receive 24 grams of a certain medicine. How many grams should a 120 pound woman receive?
kumpel [21]

With a problem like this, set up a proportion (like when making lemonade from a mix).


\frac{weight}{medicine} = \frac{weight}{medicine} is our proportion.


We fill in the the two weights and the 24 grams of medicine in the proportion and solve for the fourth piece not there.


\frac{150}{24} =\frac{120}{M}


We shorten medicine to M and we solve for M by cross multiplying.


150M = 2880


M = \frac{2880}{150} = 19.2 grams


The woman should get 19.2 grams of medicine.



7 0
4 years ago
Solve the equation 4s2+32s=60 by completing the square
lord [1]

Answer:

s = -4 ± √31

Step-by-step explanation:

Given 4s^{2} + 32s = 60

divide by 4 throughout

s^{2}  + 8s = 15\\s^{2} + 8s + (\frac{8}{2}) ^{2}  = 15 + (\frac{8}{2}) ^{2}

 (s + 4)^{2}  = 31\\s + 4 = \sqrt{31}

s = -4 ± √31

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3 years ago
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Step-by-step explanation:

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5 0
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6 0
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What is a+2 divided by 2 = -1?
yan [13]
\frac{a+2}{2}=-1\ \ \ /\cdot2\\\\2\cdot\frac{a+2}{2}=-1\cdot2\\\\a+2=-2\ \ \ /-2\\\\a+2-2=-2-2\\\\a=-4
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