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Liula [17]
3 years ago
9

I srsly need help this answer is not right and idk which one is

Mathematics
1 answer:
Zanzabum3 years ago
8 0
I'm not to well with this but try using photo math also they will show you exactly how to solve it
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What are the zeros of , where <br><br> ? help please need some help someone help please
Crank

{ \boxed{\boxed{\begin{array}{cc} \maltese  \bf \: given \\  \\  \rm \: f(x) = ( {x}^{2}  + 16)( {x}^{2} - 9) \\  \\  \bf \: for \: zeroes \\  \\ \pink{ \boxed{\boxed{\begin{array}{c | c}   \bf \:  {x}^{2} + 16 = 0 & \bf \: {x}^{2}  - 9 = 0 \\  \\  =  >  {x}^{2}  =  - 16& {x}^{2}  = 9 \\  \\  =  > x =  \pm \sqrt{ - 16} &x =  \pm \:  \sqrt{9}  \\  \\  =  > x =  \pm \sqrt{ {i}^{2}  {4}^{2} } &x =  \pm \:  \sqrt{ {3}^{2} } \\  \\  =  > x =  \pm \: 4i&x =  \pm3  \end{array}}}}   \\  \\  \rm \: x =  \pm3 \: and \pm \: 4i\end{array}}}}

Option A is the correct answer

4 0
3 years ago
The Sun hits a 30 foot flagpole at a 60° angle and casts an unobstructed 52 foot shadow. If a building is built 32 feet away, wh
aivan3 [116]

Answer: 11.5 ft

Step-by-step explanation:

The length of the shadow of the building = length of the shadow - distance of the building

= 52 - 32

= 20

Let the height the shadow strike the side of the building be h

then by similar shape rule

h / 20 = 30 / 52

52h = 30 x 20

52h = 600

h = 600/52

h = 11.53846154

h ≈ 11.5

3 0
3 years ago
2x^2+2y^2+6x-8y+12=0
lord [1]

Answer:

see explanation

Step-by-step explanation:

The equation of a circle in general form is

x² + y² + 2gx + 2fy + c = 0

with centre = (- g, - f) and radius = \sqrt{g^2+f^2-c}

Given

2x² + 2y² + 6x - 8y + 12 = 0 ← divide through by 2

x² + y² + 3x - 4y + 6 = 0 ← in general form

Compare like terms

2g = 3 ⇒ g = \frac{3}{2}

2f = - 4 ⇒ f = - 2 and c = 6, thus

centre = ( - \frac{3}{2}, 2 ) and

radius = \sqrt{(3/2)^2+(-2)^2-6}

          = \sqrt{\frac{9}{4}+4-6 } = \sqrt{\frac{1}{4} } = \frac{1}{2}

6 0
3 years ago
(x^2+5)=7 and (x^2+5)k=21, what is the value of k?
Roman55 [17]

Step-by-step explanation:

{x}^{2}  + 5 = 7 \\  {x}^{2}  = 7 - 5 \\  {x}^{2}  = 2 \\  \\(  {x}^{2}  + 5)k = 21 \\ (2 + 5)k = 21 \\ (7)k = 21 \\ 7k = 21 \\  \frac{7k}{7}  =  \frac{21}{7}  \\ k = 3

8 0
3 years ago
A 4-ounce bottle of medicine contains 20 doses are in 13-ounce bottle of the same medicine
Ratling [72]
There would be 65 doses in a 13 ounce bottle.
7 0
3 years ago
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