3 years ago

What is the integral of (x + 1)(3x + 2) from -1 to 1?

Mathematics

1 answer:

Luda [366]3 years ago

8 0

Answer:

3x²+5x+2

Step-by-step explanation:

(x+1)(3x+2)

3x²+2x+3x+2

3x²+5x+2

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hope it helps

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One number is 9 less than a second number. Their sum is -27. What is the first number?

avanturin [10]

Answer:

x= first number y= second

x=2y+9 and x+y=129, these are the equations...solving gives x=89,y=40

Step-by-step explanation:

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3 years ago

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Wich expression can be used to find the slope of a line containing the points (-3,2) and (7,-1)

docker41 [41]

$A(x_1;\ y_1);\ B(x_2;\ y_2)\\\\\text{The slope:}\ m=\dfrac{y_2-y_1}{x_2-x_1}$

$\text{We have:}\\(-3;\ 2)\to\ x_1=-3;\ y_1=2\\(7;\ -1)\to x_2=7;\ y_2=-1$

$\text{substitute}\\\\m=\dfrac{-1-2}{7-(-3)}=\dfrac{-3}{10}=-\dfrac{3}{10}$

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3 years ago

Madelyn is in a hot air balloon that has just taken off and is floating above its launching point. Eddie is standing on the grou

Morgarella [4.7K]

Answer:

8.9 meters

Step-by-step explanation:

this seems like a problem where you can use the pythagorean theorem:

you know one of the two legs (6m) and the hypotenuse (9m), you must find the other leg

a^2 + 6^2 = 9^2

a^2 + 36 = 81

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a = $\sqrt{45}$ or $\sqrt{9}$ · $\sqrt{5}$ which simplifies to be 3 $\sqrt{5}$ or approx. 8.9 meters

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2 years ago

16,500 rounded to nearest ten thousand

kari74 [83]

Hi,

16,500 rounded to the nearest ten thousand is 20,000.

Have a great day!

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(-4)-(-2)-{(-5)-[(-7)+(-3)-(-8)]}

aleksklad [387]

Answer:

is one

Step-by-step explanation:

its just one i know trust me

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2 years ago