2 years ago

Solve -5x+y=1 and 9x-2y=4 using multiplication and then elimination.

Mathematics

1 answer:

omeli [17]2 years ago

8 0

Answer:

x = - 6, y = - 29

Step-by-step explanation:

Elimination:

2*(-5x + y = 1) = -10x + 2y = 2

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

-x = 6

x = -6

9(-6)-2y=4

-54-2y=4

-2y=58

y=-29

You might be interested in

Which type of structure is used to determine which of two sets of instructions to execute?

Thepotemich [5.8K]

The CEO determine which two sets execute

3 0

2 years ago

What is<br> 1/6<br> as a decimal?<br> Give your answer rounded to 3 decimal places.

Pie

Answer:

0.16

Step-by-STep explanation:

0.16

3 0

3 years ago

Read 2 more answers

2. The electrical resistance R of a wire varies inversely with the square of its diameter d. If a wire with a

Mariulka [41]

Answer:

$0.225 \Omega =225 m\Omega$

Step-by-step explanation:

We know (Ohm second law) that $R= \frac{k}{d^2}$ where k inlcudes the rest of the parameters (material, lenght). In our situation we have k= $0.4\cdot9 \Omega mm^2$ . The moment the diameter becomes 8mm R becomes

$R= {{0.4\cdot 9}\over{16}} \Omega = 0.225 \Omega$

4 0

2 years ago

Explain the relationship between an equation in exponential form and the equivalent equation in logarithmic form.

Eddi Din [679]

$\bf 
log_{{ a}}{{ b}}=y \iff {{ a}}^y={{ b}}\qquad\qquad 
% exponential notation 2nd form
{{ a}}^y={{ b}}\iff log_{{ a}}{{ b}}=y\\
\\ \quad \\
thus\\
----------------------------\\
8^5=32768\qquad \iff\qquad log_8(32768)=5$

so... notice the example there, with 8
so.. you tell us, what is the relationship then?

8 0

3 years ago

ok so i just realised how much cartels make well then call me La Madrina lolz ok how longs a football field?

harkovskaia [24]

Answer:

100 yards or 300 feet

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Solve -5x+y=1 and 9x-2y=4 using multiplication and then elimination.​

Solve -5x+y=1 and 9x-2y=4 using multiplication and then elimination.