All categories

3 years ago

5x-4y=19 x-2y=8 Can someone please help me :))) Tenkss x

Mathematics

2 answers:

agasfer [191]3 years ago

8 0

Answer:

x=1/3

Step-by-step explanation:

5x-4y=19

2(2x-4y)=(9)2

____________

3x=1

x=1/3

I feel like i did this wrong

stira [4]3 years ago

6 0

Multiply the second row by 5

5x - 4y = 19

5x - 10y = 40

Subtract the 2nd row from the 1st row

6y = -21

Solve for y in the above equation

y = -7/2

Substitute y = -7/2 into any of the above equations. Let's pick the first one; 5x - 4y = 19

5x - 4 × -7/2 = 19

Solve for x in the equation above

x = 1

Therefore,

You might be interested in

Which of the following numbers is a power of ten?

Vinil7 [7]

C.) 0.0001 is a power of ten

3 0

3 years ago

Read 2 more answers

How do i make this fraction (7/3) a mixed number?

uranmaximum [27]

You get the whole numbers (1's) out of it and show the left over fraction next to it. (e.g. there is 7/3 as a mixed number is 2 1/3 )

7 0

3 years ago

Need help! :(((((((((((((((((((((((((

Vlada [557]

Answer:

$\frac{1}{8}$

Step-by-step explanation:

it's so simple dude

4 0

2 years ago

A cryptographic hash takes a message as input and produces a fixed-length string as output, called the digital fingerprint. A br

Allushta [10]

Answer:

$1.85x10^{19}$ attempts are required to find a matching pair if the digital fingerprint is 64 bits long.

$3.40*10^{38}$ attempts are required to find a matching pair if the digital fingerprint is 128 bits long.

Step-by-step explanation:

Each bit has two options. So

How many attempts are required to find a matching pair if the digital fingerprint is 64 bits long?

So for each of the 64 bits, we have the following number of options.

2 - 2 - 2 - 2 -... - 2

So, in all, there are

$T = 2^{64} = 1.85x10^{19}$

options.

So, $1.85x10^{19}$ attempts are required to find a matching pair if the digital fingerprint is 64 bits long.

128 bits long?

Using the same logic as the first question.

$T = 2^{128} = 3.40*10^{38}$

So, $3.40*10^{38}$ attempts are required to find a matching pair if the digital fingerprint is 128 bits long.

5 0

3 years ago

What is 1 1/7 x 3/5 pleaseeeeeeeee help

Vanyuwa [196]

Answer:

24/35 :)

Step-by-step explanation:

5 0

3 years ago