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prisoha [69]
3 years ago
10

WILL GIVE BRAINLIEST!!! Show your work please!!

Mathematics
1 answer:
Setler79 [48]3 years ago
8 0

Solution:     =====>       -7 + {12 - 3[50 - 4(2 + 3) ] }   ======>     -85



Simplify :

−7     +    12      −     3(50    -       4(2      +      3))

=         5     −   3(50   −    4(2      +      3))

=         5     −     3(50     −        (4)(5))

=        5     −     3(50   −    20)

=        5    −     (3)(30)

=         5     −     90

=      − 85

Answer   ========>        -85





Hope that helps!!!!                                                     : )

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In a lab, a 30% acid solution is being mixed with a 5% acid solution to create a 10% acid solution. What is the ratio of the amo
LuckyWell [14K]

Answer:

  1 : 4

Step-by-step explanation:

Let x represent the amount of 30% solution for 1 unit of 5% solution. Then the amount of acid in the mix is ...

  0.30x + 0.05·1 = 0.10·(x +1)

  0.30x + 0.05 = 0.10x + 0.10 . . . . eliminate parentheses

  0.20x = 0.05 . . . . . . . . . . . . . . . . subtract 0.05+0.10x

  x = 0.05/0.20 = 1/4

That is, the ratio x : 1 is 1 : 4.

4 0
3 years ago
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balandron [24]
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5 0
3 years ago
Solve the equation 4x +30 = 2(x-10)
snow_tiger [21]
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Mark as brainliest if you find it helpful.

4 0
3 years ago
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kherson [118]
The aNSWER IS 41..AM I RIGHT?
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(-9/2, -6)
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3 years ago
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