2 years ago

By system of substitution solve y= -3x-5 y=4

Mathematics

1 answer:

Musya8 [376]2 years ago

7 0

4 = -3x-5
3x = -9
x = -3

You might be interested in

What the slope of (-15,9) (-10,3)

sweet [91]

The slope is - 3/10

Y over x

6 0

2 years ago

Read 2 more answers

X^2+y^2+14x+10y=7 <br> center and radius

Sholpan [36]

$(x-a)^2+(y-b)^2=r^2\\\\(a;\ b)-the\ coordinates\ of\ the\ center\\r-the\ radius\\\\==================================\\Use:(k+l)^2=k^2+2kl+l^2\ (*)\\==================================$

$x^2+y^2+14x+10y=7\\\\x^2+14x+y^2+10y=7\\\\x^2+2x\cdot7+y^2+2y\cdot5=7\\\\\underbrace{x^2+2x\cdot7+7^2}_{Use\ (*)}-7^2+\underbrace{y^2+2y\cdot5+5^2}_{Use\ (*)}-5^2=7\\\\(x+7)^2-49+(y+5)^2-25=7\\\\(x+7)^2+(y+5)^2-74=7\ \ \ \ |add\ 74\ to\both\ sides\\\\(x+7)^2+(y+5)^2=81\\\\(x+7)^2+(y+5)^2=9^2$

$Answer:\\\boxed{(-7;-5)-center;\ 9-radius}$

8 0

2 years ago

Read 2 more answers

For what values of x will the polynomial P(x)=-2x^3 +cx^2-5x+2 have the same remainder when it is divided by x-2 and x+1

andriy [413]

Answer:

Step-by-step explanation: need more

5 0

2 years ago

How many different three digit locker combinations are possible if the digits are able to repeat?

VLD [36.1K]

1000, because if it’s number 0-9 you have 10 options for the first possible number, then multiply by 10 two more time for the second and third number .but if it’s wrong I’m srry rip ;P

8 0

2 years ago

4. A company makes two kinds of trading cards.

ziro4ka [17]

Value + value = 14 dollars
0.65x + 10-0.40x = 14
0.25x = 4
x = 16
25-x =9

4 0

2 years ago