2 years ago

I need help with this question.

1 answer:

7 0

Because both 7 and 4 are positive numbers, the minimum value would be when y and x are both at the minimum. In this case, x=-4, y=-6
7(-4)+4(-6)=-52

You might be interested in

Solve this equation using the radical equation method

Yuki888 [10]

The domain:
$3x+6\geq0\ \ |-6\\3x\geq-6\ \ \ |:3\\x\geq-2\\\\D:x\in\left< -2;\ \infty\right)$

$2x=\sqrt{3x+6}-1\ \ \ |+1\\\\2x+1=\sqrt{3x+6}\ \ \ \ |^2\\\\(2x+1)^2=\left(\sqrt{3x+6}\right)^2\ \ \ |use:\ (a+b)^2=a^2+2ab+b^2\\\\(2x)^2+2\cdot2x\cdot1+1^2=3x+6\\\\4x^2+4x+1=3x+6\ \ \ \ |-3x-6\\\\4x^2+x-5=0\\\\4x^2-4x+5x-5=0\\\\4x(x-1)+5(x-1)=0\\\\(x-1)(4x+5)=0\iff x-1=0\ \vee\ 4x+5=0\\\\x=1\ \vee\ 4x=-5\\\\x=1\in D\ \vee\ x=-1.25\in D$

$Answer:\ \boxed{x=-1.25\ \vee\ x=-1}$

6 0

2 years ago

A man travels 4 ⅓ miles in 2 ½ hours. what is his speed in miles per hour?

natulia [17]

Approximately 1.7 miles per hour

3 0

3 years ago

ihelp me unerstand > i convert 8/25 into decimal >32/100 - and because 100 had two zeros. I place the decimal over 2 place

agasfer [191]

8/25....." / " simply means division

so 8 divided by 25 = 0.32

7 0

2 years ago