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miv72 [106K]
2 years ago
15

In order for a matrix to be inverse, what must be true?

Mathematics
2 answers:
Marta_Voda [28]2 years ago
7 0
D


Mark brainliest please


Hope this helps
polet [3.4K]2 years ago
4 0
In order for the matrix to be inverse, its determinant must not equal to zero.

The inverse of a 2 × 2 matrix is: 1/(ad - bc)

In which (ad - bc) is the determinant. The determinant cannot be zero because division by zero is an undefined operation.

Therefore, the correct answer is:
D) ad - bc ≠ 0

Please mark my answer as the Brainliest, if you find this helpful :)
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When an object is thrown upwards with a speed of 64 ft/sec, its height above the ground is given by the function h(t)=−16t2+64t
Svet_ta [14]

Answer:

The object will reach its highest point 0.5 seconds after it has been thrown.

Step-by-step explanation:

The object reaches its maximum height when velocity is equal to zero, the velocity is the derivative of function height. That is:

v(t) = \frac{d}{dt}h(t) (1)

Where v(t) is the velocity of the object at time t, in feet per seconds.

If we know that h(t) =-16\cdot t^{2}+64\cdot t and v(t) = 0\,\frac{ft}{s}, then the time when object reaches its highest point is:

v(t) = -32\cdot t+64

-32\cdot t + 64 = 0

t = 0.5\,s

The object will reach its highest point 0.5 seconds after it has been thrown.

3 0
2 years ago
The table shows the conversion of several amounts of liters to liquid pints.
aniked [119]

Answer:

(C) y= 2.11x

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The square root 30 lie between what two numbers
Debora [2.8K]
The square root of thirty lies between the numbers 5 and 6.
8 0
3 years ago
What is the slope-intercept form of the equation y - 7= -5/2(x+4)
GREYUIT [131]
The first thing I would probably do is distribute (multiply) the -5/2 into the parenthesis:

= (-5/2)x + (-20/2)

Notice how I am not putting the x into the fraction. This is to make it easier to see the slope-intercept form.

Lets simplify the (-20/2) and then add 7 to both sides:

y - 7 = (-5/2)x - 10

y = (-5/2)x - 3

Your answer would then be:

y = (-5/2)x - 3

y = mx + b

Since it is now in the requested format.
4 0
3 years ago
What's 3/7 as a percent​
Vikentia [17]

Answer:

42.85714285%

OR

Simplified: 42.86%

Step-by-step explanation:

Make sure you Multiply

3/7 times 100

= 42.86%

Hope this helps!

5 0
3 years ago
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