All categories

3 years ago

(2x - y = 6 - 13x - y = 2

Mathematics

2 answers:

stiv31 [10]3 years ago

8 0

Answer:

X=4/15 and Y=-82/15

Step-by-step explanation:

Get the bottom equation to y=mx+b form. It should be, y=-2-13x. Substitute the y=mx=b equation into the 2x-y=6 as y. Solve the equation from there. Once you get X=4/15, substitute the x in 2x-y=6 to get your y=-82/15

stealth61 [152]3 years ago

4 0

Answer:

its no sloveable so the answer would be Y= 0

Step-by-step explanation:

You might be interested in

What is the factored form of the expression?<br><br> d^2 = 36d + 324

Veseljchak [2.6K]

Answer:

$(x-43.45)(x+7.45)=0$

Step-by-step explanation:

We have the quadratic equation $d^{2}=36d+324$ i.e. $d^{2}-36d-324=0$

As, the roots of the quadratic equation $ax^{2}+bx+c=0$ are given by $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ .

So, from the given equation, we have,

a = 1, b = -36 , c = -324.

Substituting the values in $x=\frac{-b\pm \sqrt{b^{2}-4ac}}{2a}$ , we get,

$x=\frac{36\pm \sqrt{(-36)^{2}-4\times 1\times (-324)}}{2\times 1}$

i.e. $x=\frac{36\pm \sqrt{1296+1296}}{2}$

i.e. $x=\frac{36\pm \sqrt{2592}}{2}$

i.e. $x=\frac{36\pm 50.9}{2}$

i.e. $x=\frac{36+50.9}{2}$ and $x=\frac{36-50.9}{2}$

i.e. $x=\frac{86.9}{2}$ and $x=\frac{-14.9}{2}$

i.e. x = 43.45 and x = -7.45

Thus, the roots of the equation are 43.45 and -7.45.

Hence, the factored form of the given expression will be $(x-43.45)(x+7.45)=0$

3 0

2 years ago

A television weighs 50 pounds and a microwave

Ilia_Sergeevich [38]

Answer:

Step-50*t + 30*m = 1500, (1) (pounds)

4*t + 3*m = 138. (2) (cubic feet)

From (2), express 3m = 138 - 4t, and substitute it into (1). You will get

50t + 10*(138-4t) = 1500, or

10t = 1500 - 1380 ---> 10t = 1120 ---> t = 112 TVs.

From this point, find the number of microwaves on your own.

step by-step explanation:

3 0

2 years ago

HELP If 90 containers of candy hearts cost $2.70, what is the constant of proportionality

erma4kov [3.2K]

Answer: 0.03$ per container or 3 cents per container.

Step-by-step explanation: 2.70/90=0.03.

5 0

2 years ago

Read 2 more answers

Which number is NOT written in scientific notation?

Thepotemich [5.8K]

The last one is not scientific notation because the 25.67 is greater than 10

5 0

2 years ago

Solve for X (simplify your answer)

lora16 [44]

Answer:

x is given as -1.5. Substitute to confirm

7 0

2 years ago