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3 years ago

Subtracting a number is the same as adding its opposite.

Mathematics

1 answer:

statuscvo [17]3 years ago

4 0

Answer:

in first question, answer is 12

in second question, answer is -12

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I FREAKING NEED HELPPP!!!

Ratling [72]

Answer:

$\boxed{\begin{bmatrix} 3 & - 1 \\ - 3 & 4\end{bmatrix} = 12 - 3 = \boxed{9} }\\ \\ \boxed{\begin{bmatrix} -12 & - 1 \\ 12 & 5\end{bmatrix} = - 60- ( - 12) = \boxed{ - 48}} \\ \\ \boxed{\begin{bmatrix} 0& - 1 \\ 17 & 4\end{bmatrix} = 0 -( - 17 )= \boxed{17}} \\ \\\boxed{ \begin{bmatrix} 8& - 1 \\ - 4 & - 1\end{bmatrix} = - 8 - 4 = \boxed{ - 12} }\\ \\ \boxed{\begin{bmatrix} 2 & - 1 \\ 2 & - 1\end{bmatrix} = - 2 - ( - 2) = \boxed{0}} \\ \\ \boxed{ \begin{bmatrix} 1 & 0\\ 0 &1\end{bmatrix} = 1 - 0 = \boxed{1}}$

Step-by-step explanation:

$the \: determinant \: of \: a \: matrix : A \to\\If \: A =\begin{bmatrix} x & y \\ a & b \end{bmatrix} \: then : \\ its \: determinant \: is \: givn \: by \to \\ |A| = (b \times x) - (a \times y) \\ \boxed{|A| = bx - ax}$

♨Rage♨

5 0

3 years ago

0.72 is ten times as much as ________. *

RideAnS [48]

Answer:

0.072 or .072

Step-by-step explanation:

0.72 is ten times as much as 0.072.

0.072 times 10 is .72.

0.72 / 10 = 0.072 .

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3 years ago

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MATH HELP ASAP!!! MAKING BRAINLIST

Ulleksa [173]

Answer:

22.86

Step-by-step explanation:

2.54 x 9 will give you the answer.

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3 years ago

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Division facts for 2,5,10

docker41 [41]

10÷5=2. 10÷2=5. They are all a factor tree

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3 years ago

Kelvin plans to buy potato chips and coke with $50. If he buys 3 packs of potato chips and 2 cans of coke, $9 will be left. If h

Delicious77 [7]

Let the prices of a pack of potato chips and can of coke be x and y respectively
3x+2y=50-9
3x+2y=41........... (1)
4x+5y=50+21
4x+5y=71............(2)
Multiply (1) with 4 and (2) with3
12x+8y=164
12x+15y=213
On subtracting above eqs. we get
7y= 49
y=7
Putting value of y in (2)
4x+5(7)=71
4x+35=71
4x=36
x=9
x=$9
y=$7
MARK IT BRANLIEST PLZZZ....

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3 years ago

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