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2 years ago

Substitute the expression for y into x-2y=1 and solve the equation for x. X=

Mathematics

2 answers:

Nikitich [7]2 years ago

6 0

Answer:

I'm not sure to help you but I can help you out a bit.

Since x - 2y = 1,

x = 1+ 2y

This is expressing x in terms of y.

In addition,

2y = x - 1

y = (x-1)/2

This is expressing y in terms of x.

Vanyuwa [196]2 years ago

3 0

Answer:

make your question clear

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3 years ago

Which graph shows a system of equations with no solutions?

podryga [215]

Graph of Parallel lines shows a system of equations with no solutions

Step-by-step explanation:

Consider a set of equations

$7x - 2y = 16\\21x + 6y =24$

If we solve this both equations using any one of the solving method, (Substitution method) then we will get

$7x-2y=16\\7x=16+2y\\x=\frac{16+2y}{7}$

substituting the following x in 2nd equation (21x + 6y = 24) We get

$21(\frac{16+2y}{7} )+6y=24\\3(16+2y)+6y=24\\48+6y+6y=24\\12y=24-48\\y=-\frac{24}{12} \\y=-2$

Put y= -2 in x equation

$x=\frac{16+2(-2)}{7}\\ x=\frac{16-4}{7}\\\x=\frac{12}{7} \\x=1.71$

Comparing these (x,y) values we can understand that they never meet at a point

4 0

2 years ago

How do I solve 3/4 =60% over 100

zepelin [54]

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Hope that helps!:)

5 0

3 years ago

5^=1 ÷ 652 tell the answer

JulsSmile [24]

Answer:

n = - 4

Step-by-step explanation:

note that 625 = $5^{4}$ , then

$5^{n}$ = $\frac{1}{5^{4} }$ = $5^{-4}$

Since the bases on both sides are equal, both 5 then equate the exponents

n = - 4

4 0

2 years ago

Read 2 more answers

4,400 X 400 = ( blank hundreds) X ( blank hundreds) = 176 hundreds, thousands, hundrenths, tenths, tens, ones, thousands, or tho

kiruha [24]

Hello There!

(44 hundreds) x (4 hundreds) = 176 tens thousands.

Hope This Helps You!
Good Luck :)

- Hannah ❤

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2 years ago

Substitute the expression for y into x-2y=1 and solve the equation for x. X=​

Substitute the expression for y into x-2y=1 and solve the equation for x. X=