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3 years ago

A rectangle has a height of 3 and a width of 2x2 + 3x - 5.

Mathematics

1 answer:

AleksAgata [21]3 years ago

7 0

Answer:

6x2 + 9x - 15

Step-by-step explanation:

All you have to do is multiply 3(2x2 + 3x - 5)

When you distribute, you will multiply 3 by 2x2, which is 6x2. 3 by 3x, which is 9x. And 3 by -5, which is -15. Then you can just write them all in order because none of them are like terms that you can combine.

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Please explain how to do this,thanks

Mrrafil [7]

Well all triangles equal 180 so add up the angles you know and subtract it from 180 and you'll get the answer I think

6 0

4 years ago

Solve the equation for all real solutions in simplest form. z^2 - 12z +9= -3

Mars2501 [29]

Answer:

Solving the equation for all real solutions in simplest form.

$z^2 - 12z +9= -3$ we get $\mathbf{z=10.9\: or\: z=1.1}$

Step-by-step explanation:

We need to solve the equation for all real solutions in simplest form.

$z^2 - 12z +9= -3$

First simplifying the equation:

$z^2 - 12z +9+3= -3+3\\z^2 - 12z +12= 0$

Now, we can solve the equation using quadratic formula:

$z=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

we have a = 1, b=-12 and c=12

Putting values in formula and finding values of x

$z=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\z=\frac{-(-12)\pm\sqrt{(-12)^2-4(1)(12)}}{2(1)}\\z=\frac{12\pm\sqrt{144-48}}{2}\\z=\frac{12\pm\sqrt{96}}{2}\\z=\frac{12\pm9.8}{2}\\z=\frac{12+9.8}{2}\:or\:z=\frac{12-9.8}{2}\\z=10.9\:or\:z=1.1$

So, we get value of z: z=10.9 or z=1.1

Solving the equation for all real solutions in simplest form.

$z^2 - 12z +9= -3$ we get $\mathbf{z=10.9\: or\: z=1.1}$

3 0

3 years ago

15x=-32-14y 9x=-64+14y

adell [148]

1) (15x=-32-14y)-1
2) 9x=-64+14y

1) -15x=32+14y
-
2) 9x=-64+14y

3) -24x=96
3) x=-4

Substitute x into 1) equation

1) 15*-4=-32-14y
1) -60+32=-14y
1) -28=-14y
1) y=2

Answer:

x=-4
y=2

5 0

3 years ago

A worker in a silver mine descends 70 feet. Use an integer to represent the change in the worker's position.

kherson [118]

Answer:

-70

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Please help 5000 points

AnnyKZ [126]