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3 years ago

Can someone help me ASAP

Mathematics

1 answer:

nalin [4]3 years ago

8 0

#2 is C because you are looking at the Y-axis and i don't know if you needed help for #3 but if you did I can't see the question.

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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

3 years ago

What is the value of the expression -|a-b| when a =7 and b -3 is?

anastassius [24]

-4 is the answer :)))))))))

4 0

3 years ago

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Easy math problems!!!!!!!!

VashaNatasha [74]

Answer:

x = 56 degrees

Step-by-step explanation:

Why? they are interior opposites. Even if you would try to measure it with a protractor on your screen, it will sure to be ending up with the same angle! I hope this helps, mate. Good luck!

7 0

3 years ago

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Solve: 3/8[-8 + 16 - (-2 and 1/2)]

Aliun [14]

Answer:

63/16 or 3 15/16.

Step-by-step explanation:

Solve: 3/8[-8 + 16 - (-2 and 1/2)] Using order of operations (PEMDAS):

=3/8[-8 + 16 - (-2.5)]

= 3/8( 8 + 2.5)

= 3/8(10.5)

= 31.5/8

= 63/16.

7 0

2 years ago

Determine whether the lines x+ 7y= −3 and y = 7x + 25 are parallel, perpendicular, or neither. Justify your answer by showing al

Zielflug [23.3K]

Answer:

perpendicular

Step-by-step explanation:

Rewrite the equations

y = (-1/7)x - 3/7 -- L1

y = 7x + 25 -- L2

Slope of L1 x Slope of L2 = -1/7 x 7 = -1

As a result, the two lines are perpendicular

3 0

3 years ago