3 years ago

4y=x+4 X=y+2 Is there a solution

1 answer:

7 0

$\left \{ {{4y=x+4} \atop {x=y+2}} \right. \\\\Substitute\ second\ equation\ to\ first:\\\\4y=y+2+4\\4y-y=2+4\\3y=6\ \ \ \ \ |:3\\y=2\\\\x=2+2=4\\\\ \left \{ {{y=2} \atop {x=4}} \right.$

You might be interested in

Beth wants to earn 500 to purchase a new TV she earns 8 dollars an hour at her job the function b (h) = 8h represents the amount

Alika [10]

A reasonable domain would be [0, 8] since 8 hour work days are common.

A reasonable range would then be [0, 64].

8 0

4 years ago

A landscaper has enough cement to make a patio with an area of 150 Sq ft. The homeowner wants the length of the patio to be 6 ft

Natasha_Volkova [10]

$A=lw=150\\l=w+6\\(w+6)w=150\\w^2+6w=150\\w^2+6w-150=0\\w=\frac{-b+-\sqrt{b^2-4ac}}{2a}\\w=\frac{-(6)+-\sqrt{(6)^2-4(1)(-150)}}{2(1)}\\w=\frac{-6+-\sqrt{36+600}}{2}\\w=\frac{-6+-\sqrt{636}}{2}\\w=\frac{-6+-2\sqrt{159}}{2}\\w=-3+-\sqrt{159}>0\\w=-3+\sqrt{159}\\\\l=(-3+\sqrt{159})+6\\l=3+\sqrt{159}$

Width = -3 + sqrt(159)
Length = 3 + sqrt(159)

4 0

3 years ago

PLEASE HELP ASAPP! BRAINLIEST TO BEST/RIGHT ANSWER

kolezko [41]

A: -5-(-13) = 8
b: -4-8 = -12

D: a^8 b^12

4 0

3 years ago

Indicate which of the following choices best identifies the hypothesis test. The league mean batting average is 0.280 with a kno

Tamiku [17]

Answer:

Step-by-step explanation:

Here we found out that the two samples are independent, so we can use independent t test for testing the average batting rattlers and Vikings

Independent group mean, the population standard deviation and / population variance known.

4 0

3 years ago

Solve for x 1/3(3x + 9) =60

juin [17]

Congrats on your first question!

Answer: x=57

///////////////////////////////////////////////////////////////////////////////////////////////////////

1/3(3x+9)=60

x+3=60

x=57

4 0

4 years ago

Read 2 more answers