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vaieri [72.5K]
3 years ago
6

Does a negative times a negative always equal a positive

Mathematics
2 answers:
Semmy [17]3 years ago
6 0

Answer: Yes

Step-by-step explanation: When you multiply a negative by a negative you get a positive, because the two negative signs are cancelled out.

Sunny_sXe [5.5K]3 years ago
5 0
Yes that always turns out positive
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A rectangular rug has a perimeter of 220 feet. The width of the rug is two feet less than the length. Find the length and the wi
Gekata [30.6K]

Answer:

The length is 56 and the width is 54.

Step-by-step explanation:

The perimeter of a rectangle is 2x+2y (width and length on both sides). so 2x+2y=220. Also x=y-2, because the width is 2 feet less than the length. Fill x=y-2 in 2x+2y=220 and we get 2(y-2)+2y=220. 2y-4+2y=220. 4y=216. y=54. Fill in y=54 in 2x+2y=220 and we get 2x+2(54)=220. 2x=220-2(54)=112. x=56.

7 0
2 years ago
the equation p = 2 (l + w) can be used to find the perimeter p of a rectangle with length l and width w solve the equation for w
Artemon [7]
The formula for w
P= 2L + 2W
W= (P -2L ) / 2
3 0
3 years ago
ANSWER QUICK!! 75 PTS!!!
iogann1982 [59]

Answer:

2) x = -2 , y = 2

3) no solution exists

Step-by-step explanation:

Solve the following system:

{-2 x - 3 y = -2

y = 2 x + 6

Hint: | Perform a substitution.

Substitute y = 2 x + 6 into the first equation:

{-2 x - 3 (2 x + 6) = -2

y = 2 x + 6

Hint: | Expand the left hand side of the equation -2 x - 3 (2 x + 6) = -2.

-2 x - 3 (2 x + 6) = (-6 x - 18) - 2 x = -8 x - 18:

{-8 x - 18 = -2

y = 2 x + 6

Hint: | Choose an equation and a variable to solve for.

In the first equation, look to solve for x:

{-8 x - 18 = -2

y = 2 x + 6

Hint: | Isolate terms with x to the left hand side.

Add 18 to both sides:

{-8 x = 16

y = 2 x + 6

Hint: | Solve for x.

Divide both sides by -8:

{x = -2

y = 2 x + 6

Hint: | Perform a back substitution.

Substitute x = -2 into the second equation:

Answer: {x = -2 , y = 2

4 0
3 years ago
Is it possible to have the same lower quartile as the minimum in a box plot?
Natalka [10]
No, bc the lower quartile should be in between the minimum and middle quartile(median) Hoped this helped!
6 0
3 years ago
Read 2 more answers
I neeeeeeeeeeeeeed help
Firlakuza [10]
It’s D it’s the last one
6 0
3 years ago
Read 2 more answers
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