3 years ago

2x+y=5 y=x−1 system of equations please show your work

Mathematics

1 answer:

Bad White [126]3 years ago

4 0

sub y = x - 1 into equation 1

2x + x - 1 = 5

3x = 6

x = 2

sub x = 2 into equation 2

y = 2 - 1

y = 1

You might be interested in

Linda is training for a half marathon.she ran 3 miles Monday,3 miles Tuesday,2 miles Wednesday how many miles did she run in tho

zepelin [54]

Answer:

Step-by-step explanation: 3+3+2=8

7 0

3 years ago

Read 2 more answers

Hidden cost of being a teacher?

Natali5045456 [20]

Answer:

they have to pay for school supplies

Step-by-step explanation:

7 0

3 years ago

How do I solve this equation?

Gnom [1K]

$2x(4-x)^{-1/2}-3(4-x)^{1/2}=(4-x)^{-1/2}\bigg(2x-3(4-x)\bigg)$

We effectively rewrite the equation as

$\dfrac{5x-12}{(4-x)^{1/2}}=0$

In order for the LHS to be defined, we need to restrict $4-x>0$ , or $x$ . Now, the LHS will vanish when the numerator is 0, which happens for

$5x-12=0\implies5x=12\implies x=\dfrac{12}5$

This value is indeed smaller than 4, so the solution is $x=\dfrac{12}5$ .

8 0

3 years ago

T number of rows that will be needed to seat everyone?

AlexFokin [52]

What is the question???

8 0

3 years ago

Jerome found the lengths of each side of triangle QRS as shown, but did not simplify his answers. Simplify the lengths of each s

emmainna [20.7K]

Answer:

Triangle QRS is an isosceles triangle because QR = RS.

Step-by-step explanation:

option D for Edgu hope this helps :)

9 0

3 years ago

Read 2 more answers