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3 years ago

What is the estimated area of a lake?

Mathematics

1 answer:

BabaBlast [244]3 years ago

8 0

Well bud what lake are we talking about here

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3 divided by 3/4 is what.

gizmo_the_mogwai [7]

2.25
ok?
I just need to write more because just the number is too short

7 0

3 years ago

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3) Solve each equation using the quadratic formula. Show<br> a. x2 – 3x – 10 = 0

Naya [18.7K]

Answer:

Step-by-step explanation:

The quadratic formula of a quadratic equation

$ax^2+bx+c=0\\\\\text{If}\ b^2-4ac>0\ \text{then the equation has two solutions}\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\text{If}\ b^2-4ac=0\ \text{then the equation has one solution}\ x=\dfrac{-b}{2a}$

$\text{If}\ b^2-4ac$

We have:

$x^2-3x-10=0\to a=1,\ b=-3,\ c=-10\\\\b^2-4ac=(-3)^2-4(1)(-10)=9+40=49>0\\\\x=\dfrac{-(-3)\pm\sqrt{49}}{2(1)}=\dfrac{3\pm7}{2}\\\\x=\dfrac{3-7}{2}=\dfrac{-4}{2}=-2\\or\\x=\dfrac{3+7}{2}=\dfrac{10}{2}=5$

5 0

3 years ago

Easy brainliest for correct answer 100%

Alik [6]

Answer:

It would be the last option.

8 0

3 years ago

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What is the range?????? 100pts and

avanturin [10]

Answer:

the range is 8

Step-by-step explanation:

the range is the highest value number minus the lowest value number. You can find that by the whiskers of the box plot which are 10 and 2. 10 minus 2 is 8.

Please mark as brainliest

8 0

2 years ago

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PLEASE HELP 3. what is the source of the line that contains the coordinate points (8, -3) and (-2, 7)

Darina [25.2K]

9514 1404 393

Answer:

-1

Step-by-step explanation:

The slope of a line between two points is given by the slope formula:

m = (y2 -y1)/(x2 -x1)

m = (7 -(-3))/(-2 -8) = 10/-10

m = -1

The slope of the line is -1.

3 0

3 years ago