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hjlf
3 years ago
9

FIRST PERSON WHO ANSWERES CORRECTLY GETS A BRAINLIEST AND THIS IS WORTH 12 POINTS

Mathematics
1 answer:
KatRina [158]3 years ago
3 0
Here is your answer

Area of 2 triangular part
=2× (1/2 × 3 × 4)

=12 sq. units

Area of three rectangular parts= (l×b)

= 11×5 + 11×4 + 11×3

= 55+44+33

= 132 sq. units

Hence,

surface area of prism= 12+132

= 144 sq. units

HOPE IT IS USEFUL
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12) Add the fractions, and simplify if possible.<br><br> (y+7)/(y^2-y-12) - 2/(y^2-9)
lianna [129]

Answer:

\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}

Step-by-step explanation:

Given the expression

\dfrac{y+7}{y^2-y-12}-\dfrac{2}{y^2-9}

First, factor each denominator:

1. y^2-y-12=y^2-4y+3y-12=y(y-4)+3(y-4)=(y-4)(y+3)

2. y^2-9=(y-3)(y+3)

Now the expression is

\dfrac{y+7}{(y-4)(y+3)}-\dfrac{2}{(y-3)(y+3)}

Now, multiply the first numerator by (y-3) and the second by (y-4) and write the result as a fraction with denominator (y-4)(y+3)(y-3):

\dfrac{(y+7)(y-3)-2(y-4)}{(y-4)(y+3)(y-3)}=\dfrac{y^2-3y+7y-21-2y+8}{(y-4)(y+3)(y-3)}=\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}

This fraction cannot be simplified more.

3 0
4 years ago
Solve using the quadratic formula. 3x^2+2x+1=0
Sav [38]
4.3 Solving 3x2-2x-1 = 0 by the Quadratic Formula .

According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :

- B ± √ B2-4AC
x = ————————
2A

In our case, A = 3
B = -2
C = -1

Accordingly, B2 - 4AC =
4 - (-12) =
16

Applying the quadratic formula :

2 ± √ 16
x = —————
6


Two real solutions:

x =(2+√16)/6

or:

x =(2-√16)/6
7 0
4 years ago
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Svetradugi [14.3K]
It’s A
there is no indicator that they are the same
8 0
3 years ago
May somebody help me.
kumpel [21]

Answer:

d

Step-by-step explanation:

it keeps going up by 2 and 2x2 is 4 4x2 is 8 so on?

4 0
3 years ago
Write an equation for the parabola who’s vertex is at (3,6) and which passes through (4,4)
Gekata [30.6K]

Problem

Solution

For this case we know that the vertex is given by (3,6) and the genera equation for a parabola is given by:

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4 0
1 year ago
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