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2 years ago

The first equation from the previous system of

Mathematics

1 answer:

Savatey [412]2 years ago

6 0

Answer: x = 5 and y=-6

Step-by-step explanation:

If we graph both equations, the interception is the point (5,-6). Therefore the solution for x is 5 and for y is -6.

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Jack birthday is in 6 weeks how many day is it until jacks birthday? Complete the explanation on how you could use a number line

Pie

Answer:

42 days

Step-by-step explanation:

1 week equals 7 days

7 × 6 = 42

4 0

2 years ago

Show that if A is invertible, then det Upper A Superscript negative 1det A−1equals=StartFraction 1 Over det Upper A EndFraction

netineya [11]

Answer:

Therefore

$det(A)*det(A^{-1}) = 1$ and $det(A^{-1}) = 1/det(A)$

Step-by-step explanation:

Remember that if

$I$ = Identity Matrix

then $det(I)=1$ .

Also remember that for any invertible matrix

$A*A^{-1} = I =$ Identity Matrix.

Therefore

$det(A*A^{-1}) = det(A)*det(A^{-1}) = det(I) = 1$

Therefore

$det(A)*det(A^{-1}) = 1$ and $det(A^{-1}) = 1/det(A)$

7 0

3 years ago

-5(2 × -6) inverse operation

Gekata [30.6K]

Answer:

Step-by-step explanation:

-5(2×-6)

-5(-12)

It should be correct

5 0

2 years ago

How many times greater is 70 million than 7 million

Dahasolnce [82]

For this case we have the following expressions:

70,000,000

7,000,000

If we divide the first expression by the second we have:

$\frac {70,000,000} {7,000,000} = 10$

Thus, we have that the first expression is 10 times greater than the second expression.

Answer:

70,000,000 is 10 times greater than 7,000,000

6 0

2 years ago

Brenda throws a dart at this square-shaped target:

Klio2033 [76]

Answer: See below

Step-by-step explanation:

Area of the square = l*w = 11*11 = 121

Area of the circle = pi r^2 = pi*1^2 = 3.142

Part A

P(hitting the circle) = 3.142 / 121 = 0.026 which is closer to 0.

Part B

P(hitting the outside portion) = 1 - 0.026 = 0.974 which is closer to 1.

4 0

1 year ago

Read 2 more answers