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raketka [301]
3 years ago
12

Simplify the expression: - 3d + -9d + 5d

Mathematics
1 answer:
Gnom [1K]3 years ago
3 0

Answer:

7d

Step-by-step explanation:

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the area of a rectangle is 42 square inches and one side is 12 inches long . find the perimeter of the rectangle
valentinak56 [21]
The area is one side times the other side
Make the other side x.
12x=42
x=42/12=3.5
The perimeter is 2x+2y where x and y are sides of the rectangle.
P= 2(3.5)+2(12)=7+24=31 inches
Hope this helps. 
6 0
3 years ago
DO Y'ALL KNOW THE ANSWER?
marissa [1.9K]

Answer:

A

Step-by-step explanation:

just a guess

7 0
3 years ago
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melomori [17]
The answer will be 51 Remainder 5.
3 0
2 years ago
Complement of 70 degrees
Hitman42 [59]

Answer:

20 degrees

Step-by-step explanation:

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6 0
2 years ago
A waitress sold 10 ribeye steak dinners and 18 grilled salmon dinners, totaling $590.39 on a particular day. anither day she sol
Len [333]

Answer:

   a) The cost of ribeye steak dinners is $ 16.96.

   b) The cost of grilled salmon dinners is $ 23.37.

Explanation:

 Let the cost for ribeye steak dinners  be m and cost for grilled salmon dinners  be n.

 A waitress sold 10 ribeye steak dinners and 18 grilled salmon dinners, totaling $590.39 on a particular day.

So, we have    

         10 m + 18 n = 590.39 -------equation 1

Another day she sold 22 ribeye steak dinners and 9 grilled salmon dinners, totaling $583.49

So, we have    

         22 m + 9 n = 583.49 -------equation 2

 equation 2 x 2

       44 m + 18 n = 1166.98 -------equation 3

 equation 3 - equation 1

        44 m + 18 n - (  10 m + 18 n ) = 1166.98 - 590.39

         m = 16.96 $

  Substituting in equation 1

        22 x 16.96 + 9 n = 583.49

          n = 23.37 $

   a) The cost of ribeye steak dinners is $ 16.96.

   b) The cost of grilled salmon dinners is $ 23.37.

6 0
3 years ago
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