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oee [108]
2 years ago
13

PLese help!! thank you

Mathematics
1 answer:
podryga [215]2 years ago
4 0

Answer:

what you need help with

Step-by-step explanation:

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Factorize the following algebraic expression:
Hoochie [10]
X^2+16-38=0
find what 2 numbers multiply to get -38 and add to get 16
find factors of 38
2 times 19
there is no way to use common factor so use quadratic formula which is
x=\frac{ -b+\sqrt{b^2-4ac} }{2a} or x=\frac{ -b-\sqrt{b^2-4ac} }{2a}

ax^2+bx+c=0 subsitte
a=1
b=16
c=-38
subsitute
\frac{ -16+\sqrt{16^2-4(1)(-38)} }{2(1)}=\frac{ -16+\sqrt{256+152} }{2}= \frac{ -16+\sqrt{408} }{2}= \frac{ -16+2\sqrt{102} }{2}=-8+\sqrt{102}
so the answers for x are -8+\sqrt{102} and -8-\sqrt{102}  which are aprox -2.099504938362 and +18.099504938362
so it would be
(x-[-8+√102])(x+[8+√102])=0


6 0
2 years ago
Find the domain of the function (13/x-11)
kotykmax [81]
The domain of 13/x - 11 is all real numbers except x cannot equal zero
8 0
3 years ago
Round your answer to the nearest hundredth.<br> C<br> 5<br> B.<br> 7<br> ?<br> A
astraxan [27]

Answer:

If C is 5 and B is 7 the a is 9

7 0
3 years ago
What is a expression that contains at least one variable
NeX [460]
4x (-2s+4x^2)
is an multiplication expression
3 0
3 years ago
Read 2 more answers
Here's the question ​
zheka24 [161]

Answer:

60

Step-by-step explanation:

perimeter (p) = 8 + 17 + 15 = 40

semi-perimeter (s) = p/2 = 20

Area = square root of s(s-a)(s-b)(s-c) where a,b,c are the sides of the triange by Herons formula.

Therefore, area = 20(20-8)(20-15)(20-17) = square root of 3600 = 60

4 0
3 years ago
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