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Zigmanuir [339]
3 years ago
7

The product of 7,x, and y is represented by the expression 7xy. If the value of x is negative, what

Mathematics
2 answers:
Sergio [31]3 years ago
8 0

Answer:

it must be negative

Step-by-step explanation:

7xy = a positive number

7 is positive.

x is a negative number.

y must be negative for 7xy to be positive.

(+) * (-) * (-) = +

The product of two negative numbers is positive.

Sphinxa [80]3 years ago
5 0

Answer:

In the expression of 7xy, if x is negative, then y must also be negative for the product to be positive.

Let me know if this helps!

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The sum of 237 and six times the opposite of a number is 405. What is the number?
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Answer:

(A) x=-28

Step-by-step explanation:

237 -6x = 405           [note that 6*(-x) is (-6x)]

  -6x = 168           [subtract 237 from both sides]

   x = -28             [divide both sides by (-6)]

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Help please! Step by step!
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3 years ago
The answer and the work that was needed to solve it .
cupoosta [38]
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If y varies directly as x and y = 144 when x = 12, what is the value of y when x = 17?
olasank [31]
Direct variation:
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y=204 when x=17.
6 0
3 years ago
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