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GalinKa [24]
1 year ago
6

Use the distributive property. 4(5x + 3y - 7) = 20x + 12y + [?]

Mathematics
2 answers:
katen-ka-za [31]1 year ago
6 0

Answer:

- 28

Step-by-step explanation:

4(5x + 3y - 7) ← multiply each term in the parenthesis by 4

= 20x + 12y - 28

Grace [21]1 year ago
3 0
4(5x+3y-7)=20x+12y+(-28)
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PLEASE SHOW YOUR WORK.
schepotkina [342]

Answer:

a) Shawn's error was that he Multiplied 15 by 2x only. He didn't Multiply 15 by 7

b) The difference, in square feet, between the actual area of Shawn’s garden and the area found using his expression is given as

98 square feet

Step-by-step explanation:

The area in, square feet, of Shawn’s garden is found be calculating 15(2x + 7). Shawn incorrectly says the area can also be found using the expression 30x + 7.

The correct area =

15(2x + 7).

= 30x + 105 square feet

The error in Shawn’s expression is

= 15(2x + 7)

= 30x + 7 square feet

Shawn's error was that he Multiplied 15 by 2x only. He didn't Multiply 15 by 7

The difference, in square feet, between the actual area of Shawn’s garden and the area found using his expression is given as

30x + 105 square feet - 30x + 7 square feet

= 30x + 105 - (30x + 7)

= 30x - 30x + 105 - 7

= 98 square feet

7 0
2 years ago
Which system of equations has no solutions?​
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The second graph I believe if not some else will try to help.
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2 years ago
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Using the distributive property,simplify the following: 5(x+2)
MArishka [77]
The answer is 5x + 10 because you have to times 5 by everything in the parenteses
3 0
3 years ago
Ashley draws a square that has a diagonal of
xz_007 [3.2K]
The diagonal is the hypotenuse of a right triangle with the sides of the square as legs.
By Pythagoras (s = side)
s^2 + s^2 = 15^2
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rounded to nearest tenth = .4
rounded to nearest hundredth = .44
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