3 years ago

Which statements are true?

Mathematics

1 answer:

Gwar [14]3 years ago

3 0

See the attached picture:

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PLZZZ HELP ME OUT THIS DUE RIGHT NOW AND I FREAKING OUT PLEASE HELP ME P.S YOU HAVE WRITE ANSWERS FOR ALL OF THEM

Veseljchak [2.6K]

1. Negative
Explanation: A negative minus a positive will be a negative
2. Negative
Explanation: If you use your order of operations a negative multiplied by a negative will be positive but since BxB would be greater than A it would be negative for example 2-8 would equal -6

6 0

4 years ago

Read 2 more answers

the derivative of the function f is given by f'(x)=x^2cos(x^2). How many points of inflection does the graph of f have on the op

Vsevolod [243]

The point of inflection is calculated by equating the second derivative to zero and determining x from there.

f"(x) = -x²2xsinx² + cosx²(2x) = 0

2xcosx² - 2x³sinx² = 0
2x (cosx² - xsinx²) = 0

2x = 0 ⇒ x = 0
cosx² - xsinx² = 0 ⇒ x = 3.82 (if you use shift+solve in your scientific calculator)

Thus, the function only has 1 point of inflection and it is at x = 0.

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3 years ago

at best buy a flat screen television with a regular price of 1,790 was reduced by $395 . Assuming 800 customers purchased the te

Margaret [11]

You have to do $1,790 reduced (decreased) by $395 times 800 and your answer is $1166,000

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3 years ago

Which matrix is equal to P + Q?

Afina-wow [57]

Answer:
$\begin{bmatrix}-1.1 & 9.5\\-5.7 & 0.8\\6.1 & 0.7\end{bmatrix}$

------------------------------------

Add up the corresponding elements

Row1,Column1: 6.1+(-7.2) = -1.1
Row1,Column2: 1.9+7.6 = 9.5
Row2,Column1: -7.5+1.8 = -5.7
Row2,Column2: 2.2+(-1.4) = 0.8
Row3,Column1: 3.8+2.3 = 6.1
Row3,Column2: -1.4+2.1 = 0.7

So that's why the answer is
$\begin{bmatrix}-1.1 & 9.5\\-5.7 & 0.8\\6.1 & 0.7\end{bmatrix}$

3 0

4 years ago

Eight times the sum of a number and 16 is at least -28 Use the variable w for the unknown number

Genrish500 [490]

Answer: (w+16)8 ≥ -28

*≥ means greater than or equal to. Since the value of the expression is AT LEAST -28, the number could be -28 or anything greater.

Hope this helps,

LaciaMelodii :)

8 0

3 years ago