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aksik [14]
3 years ago
9

PLS HELP WILL MARK BRAINLIEST!!!!!!!! answer both questions (they are two separate questions)

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0

\frac{ {x }^{12} }{ {x}^{6} }  =  \\

{x}^{12 -6 }  =

{x}^{6}

Thus c is the correct option .

_____________________________________________

\frac{ - 57 {y}^{2}  {z}^{3} }{3 {y}^{5}  {z}^{3} }  =  \\

\frac{ - 19 \times 3 {y}^{2} {z}^{3}  }{ {y}^{3}  \times 3 {y}^{2}  {z}^{3} }  =  \\

\frac{ - 19}{ {y}^{3} }  \\

Thus a is the correct option .

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X-y+4z=5<br> 4x+z=2<br> x+5y+z=17
JulsSmile [24]

Answer:x = 0, y = 3, z = 2

Step-by-step explanation:

The given system of equations is expressed as

x - y + 4z = 5 - - - - - - - - - - - - - -1

4x + z = 2

z = 2 - 4x- - - - - - - - - - - - - -2

x + 5y + z = 17- - - - - - - - - - - - - -3

From equation

Substituting equation 2 into equation 1 and equation 3, it becomes

x - y + 4(2 - 4x) = 5

x - y + 8 - 16x = 5

x - 16x - y = 5 - 8

- 15x - y = - 3 - - - - - - - - - - - - - -4

x + 5y + 2 - 4x = 17

x - 4x + 5y = 17 - 2

- 3x + 5y = 15- - - - - - - - - - - - - -5

We would eliminate y by multiplying equation 4 by 5 and equation 5 by 1. It becomes

- 1

- 75x - 5y = - 15

- 3x + 5y = 15

Adding both equations, it becomes

- 78x = 0

x = 0

Substituting x = 0 into equation 2, it becomes

z = 2 - 4 × 0

z = 2

Substituting x = 0 and z = 2 into equation 1, it becomes

0 - y + 4 × 2 = 5

- y + 8 = 5

y = 8 - 5

y = 3

6 0
3 years ago
99999999999999999+99999999999999
lina2011 [118]

Answer:

1.001e+17

Step-by-step explanation:

8 0
2 years ago
Clark has 7 and 1 over 2 feet of wire.
tatiyna

Answer:

a) 7.5/3=2.5  

b)  about 3 pieces can be cut.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Perry borrows $350 at a simple interest rate of 4.5%. Perry pays back the loan in 30 months. How much interest does Perry pay on
Nitella [24]

Answer: the interest on the loan is $39.38

Step-by-step explanation:

The formula for determining simple interest is expressed as

I = PRT/100

Where

I represents interest paid on the loan.

P represents the principal or amount taken as loan

R represents interest rate

T represents the duration of the loan in years.

From the information given,

P = $350

R = 4.5%

There are 12 months in a year. Converting 30 months into years, it becomes

30/12 = 2.5. so

T = 2.5 years

Therefore

I = (350 × 4.5 × 2.5)/100

I = $39.38

3 0
3 years ago
My brain is gone for the day, so what comes first when finding points on a graph, vertical, or horizontal?
exis [7]
Just remember it's along the corridor and up the stairs so horizontal comes first
8 0
3 years ago
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