Giselle works as a carpenter and as a blacksmith. she earns $20 dollar per hour as a carpenter and $25 per hour as a blacksmith. last week, giselle worked both jobs for a total of 30 hours, and earned a total of $690

how long did giselle work as a carpenter last week, and how long did she work as a blacksmith?

giselle worked as a carpenter for

hours and as a blacksmith for

hours last week.

She worked 12 hours as a carpenter and 18 hours as a blacksmith last week.

Step-by-step explanation:

Let x be the number of hours for which she worked as a carpenter and y be the number of hours for which she worked as a blacksmith,

Since, total numbers of hours she worked = 30,

⇒ x + y = 30 (1)

Also, she earned total $ 690 in which she earned $20 dollar per hour as a carpenter and $25 per hour as a blacksmith.

⇒ 20 x + 25 y = 690 (2)

Equation (2) - 20 × Equation (1),

We get,

5 y = 90 ⇒ y = 18

After substituting this value in equation (1),

We get, x = 12,

Hence, She worked as a carpenter = x hours = 12 hours

And, as a blacksmith = y hours = 18 hours

12 and 18

Step-by-step explanation:

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step-by-step explanation:

consider the parallelogram shown in the attached image.

in the parallelogram hijk, the length of hk is given as,

from the properties of parallelogram we know that the opposite sides of a parallelogram are parallel to each other and are equal in measure.

therefore, the length of the side ij must be equal to the length of the side hk and that is .

hence, the expression for the length of ij confirms that hijk is a parallelogram.