If the expression below has a positive value, which inequality represents all possible values of x in the expression

1 answer:

7 0

Your answer would be “a”.

In order to receive a positive solution in the following equation, you must include a double negative to have them cancel each other out and come up with a positive value. Sorry if this is confusing it’s easier to explain this process in person rather than online but I hope this helps anyways :)

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PLEASE HELPPPPP

Flauer [41]

Answer:

Cost of 1 rose bush = x = $5

Cost of 1 geraniums = y = $2

Step-by-step explanation:

DeShawn and Mike each improved their yards by planting rose bushes and geraniums. They bought their supplies from the same store.

Let us represent:

Cost of 1 rose bush = x

Cost of 1 geraniums = y

DeShawn spent $13 on 1 rose bush and 4 geraniums.

x + 4y = 13..... Equation 1

x = 13 - 4y

Mike spent $56 on 10 rose bushes and 3 geraniums.

10x + 3y = 56....... Equation 2

We substitute 13 - 4y for x in Equation 2

10(13 - 4y) + 3y = 56

130 - 40y + 3y = 56

Collect like terms

- 40y + 3y = 56 - 130

-37y = -74

y = -74/37

y = $2

Solving for x

x = 13 - 4y

x = _13 - 4 × $2

x = $13 - $8

x = $5

Therefore,

Cost of 1 rose bush = x = $5

Cost of 1 geraniums = y = $2

7 0

3 years ago

Cx/d+f=b solve for x

Harlamova29_29 [7]

$\text{Hello there!}\\\\\text{Solve for x:}\\\\\frac{cx}{d}+f=b\\\\\text{Subtract f from both sides}\\\\\frac{cx}{d}=b-f\\\\\text{Multiply both sides by d}\\\\cx=d(b-f)\\\\cx=db-df\\\\\text{Divide both sides by c}\\\\x=\frac{db-df}{c}\\\\\boxed{x=\frac{db-df}{c}}$