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kkurt [141]
3 years ago
12

Find the Volume of this Triangular Prism ​

Mathematics
1 answer:
Alex_Xolod [135]3 years ago
6 0

Answer:

140m^2

Step-by-step explanation:

You take the blh/2

(7*5*8)/2

You get 140

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Plssssssssss help me plsss and thxxxxxxxx
mamaluj [8]

Answer:

B) 264 units²

Step-by-step explanation:

Figure 1:

A = 1/2BH

A = 1/2 12(4)

A = 1/2 48

A = 24

Figure 2:

24 - 4 = 20

20 x 12 = 240

Total area:

240 + 24 = 264

7 0
3 years ago
I NEED HELP PLS THIS IS DUE IN 3 HOURS
Mariulka [41]

Answer:

Part 1)  x^{2} -2x-2=(x-1-\sqrt{3})(x-1+\sqrt{3})

Part 2)  x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

Part 1)

in this problem we have

x^{2} -2x-2=0

so

a=1\\b=-2\\c=-2

substitute in the formula

x=\frac{-(-2)(+/-)\sqrt{-2^{2}-4(1)(-2)}} {2(1)}\\\\x=\frac{2(+/-)\sqrt{12}} {2}\\\\x=\frac{2(+/-)2\sqrt{3}} {2}\\\\x_1=\frac{2(+)2\sqrt{3}} {2}=1+\sqrt{3}\\\\x_2=\frac{2(-)2\sqrt{3}} {2}=1-\sqrt{3}

therefore

x^{2} -2x-2=(x-(1+\sqrt{3}))(x-(1-\sqrt{3}))

x^{2} -2x-2=(x-1-\sqrt{3})(x-1+\sqrt{3})

Part 2)

in this problem we have

x^{2} -6x+4=0

so

a=1\\b=-6\\c=4

substitute in the formula

x=\frac{-(-6)(+/-)\sqrt{-6^{2}-4(1)(4)}} {2(1)}

x=\frac{6(+/-)\sqrt{20}} {2}

x=\frac{6(+/-)2\sqrt{5}} {2}

x_1=\frac{6(+)2\sqrt{5}}{2}=3+\sqrt{5}

x_2=\frac{6(-)2\sqrt{5}}{2}=3-\sqrt{5}

therefore

x^{2} -6x+4=(x-(3+\sqrt{5}))(x-(3-\sqrt{5}))

x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})

5 0
3 years ago
how can an expression written in either radical form or rational exponent form be rewritten to equivalent forms?
miss Akunina [59]
You can rewrite radical form expressions by putting the expression to the power of 1/n, n depending on the radical. For example: sqrt2 = 2^(1/2) or cuberoot4= 4^(1/3). Vice versa with rational exponent equations: 5^(1/2) = sqrt5 or 3^4/3 = cuberoot3^4
6 0
3 years ago
The vertex of the graph of y = (x - 1)2 - 5 is
kifflom [539]

The vertex of the graph of y = (x - 1)2 - 5 is (1,-5)

7 0
3 years ago
Read 2 more answers
Solve the linear equation<br> Please send the work as well<br><br> 2/5x + 25= 4/5x + 30
denis-greek [22]
Unknowns on one side, known on other.

2/5x - 4/5x = 30-25

-2/5x=5
X= -25/2
X=12.5
7 0
2 years ago
Read 2 more answers
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