Which of the following points is a solution to the system of linear inequalities?

Mathematics

2 answers:

wariber [46]3 years ago

6 0

Answer:

idk

Step-by-step explanation:

Mrrafil [7]3 years ago

3 0

Answer:

Step-by-step explanation:

When solving this inequality you should get (3,5) because then it makes both inequalities true and you can verify if you want but make 'x' as a 3 and then make 'y' as a 5 and then you just solve like a normal equation and they should end up getting you the right answer.

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Georgia [21]

Answer:

(3,-4)

Step-by-step explanation:

7 0

3 years ago

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hoa [83]

Answer:

i think

-17x^2 +3x

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3 years ago

An explosion causes debris to rise vertically with an initial speed of 120 feet per second. The formula h equals negative 16 t s

Novay_Z [31]

Answer:

The debris will be at a height of 56 ft when time is <u>0.5 s and 7 s.</u>

Step-by-step explanation:

Given:

Initial speed of debris is, $s=120\ ft/s$

The height 'h' of the debris above the ground is given as:

$h(t)=-16t^2+120t$

As per question, $h(t)=56\ ft$ . Therefore,

$56=-16t^2+120t$

Rewriting the above equation into a standard quadratic equation and solving for 't', we get:

$-16t^2+120t-56=0\\\textrm{Dividing by -8 throughout, we get}\\\frac{-16}{-8}t^2+\frac{120}{-8}t-\frac{56}{-8}=0\\2t^2-15t+7=0$

Using quadratic formula to solve for 't', we get:

$t=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\t=\frac{-(-15)\pm \sqrt{(-15)^2-4(2)(7)}}{2(2)}\\\\t=\frac{15\pm \sqrt{225-56}}{4}\\\\t=\frac{15\pm\sqrt{169}}{4}\\\\t=\frac{15\pm 13}{4}\\\\t=\frac{15-13}{4}\ or\ t=\frac{15+13}{4}\\\\t=\frac{2}{4}\ or\ t=\frac{28}{4}\\\\t=0.5\ s\ or\ t=7\ s$