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statuscvo [17]
2 years ago
6

Pls help me I am confused

Mathematics
2 answers:
Maslowich2 years ago
8 0

Answer:

\huge\boxed{A.\ \dfrac{565}{182}}

Step-by-step explanation:

\dfrac{8}{7}-(5x-3)=\dfrac{1}{5}x-12\\\\\dfrac{8}{7}-5x+3=\dfrac{1}{5}x-12\qquad|\text{multiply both sides by 35}\\\\35\cdot\dfrac{8}{7}-35\cdot5x+35\cdot3=35\cdot\dfrac{1}{5}x-35\cdot12\qquad|\text{simplify}\\\\5\cdot8-175x+105=7\cdot x-420\\\\40-175x+105=7x-420\\\\-175x+(40+105)=7x-420\\\\-175x+145=7x-420\qquad|\text{subtract 145 from both sides}\\\\-175x=7x-565\qquad|\text{subtract }7x\ \text{from both sides}\\\\-182x=-565\qquad|\text{divide both sides by (-182)}\\\\x=\dfrac{565}{182}

Vsevolod [243]2 years ago
3 0

Answer:

A

Step-by-step explanation:

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What multiples to 42 and adds to -2
solniwko [45]

Answer:

Step-by-step explanation:

xy = 42

x+y = - 2                   Substitute into the top equation

y = -2 - x                   Put in for y

x(-2 - x) = 42             Remove the brackets

-2x - x^2 = 42           Subtract 42 from both sides.

-2x - x^2 - 42 = 0      Put in the more normal order.

-x^2 - 2x - 42 = 0      Multiply by -1

x^2 + 2x + 42 = 0

This cannot be factored. It gives complex roots as it is written. I will give you the answer but I kind of doubt the question is correct.

x1 = - 1 + 6.40i

x2 = -1 - 6.40i

Leave a comment if you have a correction.

4 0
3 years ago
What is the value of 2 1/5 +3 4/5=
navik [9.2K]

Answer:

6

Step-by-step explanation:

I like to line up my addition problems vertically

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5 0
3 years ago
Mrs Omar runs the school tennis club. She has a bin of tennis balls and rackets for every 5 tennis balls in the bin there are 5
Sav [38]

Answer:

x=y

Step-by-step explanation:

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6 0
2 years ago
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Solnce55 [7]

Answer:

Step-by-step explanation:

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From the plot we can say that 10th digit is represented by the stem

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For stem 3, we can leave 30 and 31 start with 2 in leaf and 3 n stem

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8 0
3 years ago
12 more than a number P is 17
Alenkasestr [34]

Answer:

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Step-by-step explanation:

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