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Arte-miy333 [17]
2 years ago
12

PLEASE HELP DUE NOW!!! WILL MARK BRAINLIEST!!!

Mathematics
2 answers:
Sav [38]2 years ago
3 0

Answer:

(-5, -8)

Step-by-step explanation:

- 9x + 5y = 5 \\  - 5x + 5y =  - 15

- 9x + 5y = 5 \\ 5x - 5y = 15

- 4x = 20

- x = 5

x =  - 5

-5( - 5) + 5y =  - 15

25 + 5y =  - 15

5y = -40

y = -8

olga55 [171]2 years ago
3 0

First, we merge the questions, to do that we simplify both of them to get a positive side.

To do that, we can first mutliply both sides of the second equation by -1.

Due to that, we get the equations

-9x+5y=5

5x-5y=15

If we add up the equations, we get -4x = 20

We can simplify and get x=-5

To get y, we can first input x into the second equation:

5(-5)-5y=15

-25-5y=15

Simplify and we get -8.

Therefore we have (-5,-8)

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If the null space of A4×5 is exactly a two-dimensional plane, answer the following:
Hatshy [7]

Answer:

I.

A is a 4 x 5 matrix => A: U -> V, dim U = 5, dim V = 4

Null space is exactly two dimensional plane

dim null (A) = 2

II.

Rank A = dim U - dim Null A = 5 - 2 = 3

III.

Number of linearly Independent columns of A is the rank of A = 3

IV.

Yes, The system Ax = b has no solution sometimes as range of A \neq V

V.

Yes,Sometimes Ax = b has a unique solution

VI.

Yes, sometimes Ax = b has infinitely many solutions

8 0
3 years ago
It says ( Find the length of the hypotenuse )<br> ~<br> Pls?<br> Thanks!
Mashcka [7]

Answer:

5

Step-by-step explanation:

In order to solve this problem, we need to use Pythagorem Theorem (a^2+b^2=c^2)

When using the pythagorem theorem the hypoteneuse would be the c^2 and the two other sides would be a and b (the order doesn't matter).

So, our formula would be:

4^2+3^2=c^2

Simplifies into:

25=c^2

In order to remove the exponent 2, we would have to square root both sides by 2. After doing so, you get the answer 5.

Hope this helps! :)

5 0
2 years ago
Read 2 more answers
Jon goes to a flea market and sells comic books for 3 dollars each. He starts the night with 20 dollars in
Rudiy27
So what you have to do to figure this out is 47-20 to get 27, then take 27 and divide it by 3 to get the answer of 9 comic books were sold by John.
5 0
2 years ago
HELP PLEASE!!!
ch4aika [34]

Answer:

The population of Bear in 2050 is 4750000

Step-by-step explanation:

A) The exponential growth equation for bear is as follows -

dN/dT = rmax * N

Where dN/dT = change in population

rmax is the maximum rate of change

N = Base population

B) Here the per capita rate of increase (r) will always be a positive value irrespective of the and hence we will assume this population to be growing exponentially.

C) dN/dT = rmax * N

D) dN / 5 = 2.5 * 380,000

dN = 5*2.5 * 380000

= 4750000

8 0
3 years ago
Please Find the distance between the two points rounding to the nearest tenth (if necessary).
Sphinxa [80]

Answer:

10.29 u

Step-by-step explanation:

<u>Given :- </u>

  • Two points (7,4) and (-2,9) is given to us.

And we need to find out the distance between the two points . So , here we can use the distance formula to find out the distance. As,

:\implies D = √{(x2-x1)² + (y2-y1)²}

:\implies D =√[ (7+2)² +(9-4)²]

:\implies D =√[ 9² +5²]

:\implies D =√[ 81 +25]

:\implies D = 10.29

<h3>Hence the distance between the two points is 10.29 units .</h3>
8 0
3 years ago
Read 2 more answers
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