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dimulka [17.4K]
3 years ago
10

Factor completely x^2 - 8x + 16

Mathematics
1 answer:
Anarel [89]3 years ago
6 0

Answer:

(x - 4)^2

Step-by-step explanation:

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Use any method to solve the equation. If necessary, round to the nearest hundredth.7x2 − 16x = 8
Semmy [17]
7x^2 - 16x - 8 = 0

using the quadratic formula x = [ -(-16)+/- sqrt((-16^2 - 4*7-8]  / 2*7

 =   (16 +/1 sqrt 480)  / 14

=  2.71, -0.42     to nearest hundredth
4 0
3 years ago
Find the volume of this cone.<br> Use 3 for TT.<br> 5in<br> Tr2h<br> 3<br> 8in<br> V<br> V ~ [?]in3
LuckyWell [14K]

Answer:

50 in ^3

Step-by-step explanation:

V = 1/3 pi r^2 h

We know that pi = 3  

the diameter is 5 so the radius is 1/2 the diameter of 5/2 = 2.5

The height is 8

V = 1/3 ( 3) ( 2.5)^2 ( 8)

V = 50 in ^3

5 0
3 years ago
3/5 + 1/4 = what is it
sukhopar [10]
3*4 + 1*5 / 5*4=
12+5/20=
17/20
3 0
3 years ago
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7 ten thousands equals how many thousands
algol [13]
7 10 thousands is equal to 70 thousand
6 0
4 years ago
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I don't understand this factorisation <br> a2+ 4a+3​
Tomtit [17]

Answer:

\boxed{\sf (a + 3)(a + 1)}

Step-by-step explanation:

\sf Factor  \: the  \: following:  \\  \sf \implies  {a}^{2}  + 4a + 3 \\  \\  \sf The \:  factors  \: of \:  3 \:  that \:  sum \:  to \:  4  \\ \sf are \:  3  \: and  \:  1. \\ \\  \sf So,  \\   \sf \implies {a}^{2}  + (3 + 1)a + 3 \\  \\  \sf \implies   {a}^{2}  + 3a + a + 3 \\  \\  \sf \implies a(a + 3) + 1(a + 3)  \\  \\ \sf \implies (a + 3)(a + 1)

7 0
3 years ago
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