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Masteriza [31]
2 years ago
13

Find the zeros of the following quadratic polynomials and verify the relationship between the zeroes and the coefficients

Mathematics
1 answer:
Anna [14]2 years ago
6 0

Answer:

Zeros would be x= 0, -2

Step-by-step explanation:

hope this helps :)

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Translate the given phrase into an algebraic expression and simplify if possible: the sum of -4 and the difference of 3 and 1
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The answer is -12 have a great rest of your day
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3 years ago
A young boy let’s out 30 feet of string on his kite. If the angle of elevation from the boy to his kite is 27”, how high is the
const2013 [10]

Answer:

The height of the kite from the ground is 13.617 feet  

Step-by-step explanation:

Given as :

The measure of the string = 30 feet

The angle of elevation from the boy to his kite = 27°

Let the height of the kite from ground = H feet

So, From Triangle

Sin angle = \dfrac{\textrm perpendicular}{\textrm Hypotenuse}

Or, Sin 27° =  \dfrac{\textrm H}{\textrm 30}

or, H = 30 ×  Sin 27°

I.e H = 30 × 0.4539

∴ H = 13.617 feet

Hence the height of the kite from the ground is 13.617 feet   Answer

7 0
2 years ago
Beth spends 40% of her weekly income on rent. If her rent is $240 each week, find her weekly income.
Lerok [7]
Beths weekly income is 600$ per week.
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3 0
3 years ago
Read 2 more answers
9x+2y-27z=-155 -11x-y+37z=208 19x+6y-52z=-304
Paladinen [302]

Answer:

(x,y,z)=( -2, -1 ,5)

Step-by-step explanation:

9x+2y-27z=-155                                                        (1)

-11x-y+37z=208                                                        (2)

19x+6y-52z=-304                                                     (3)

(1) *3   ;(2) *6     ;(3)*1, you have

27x+6y-81z=-465                                                      (1)

-66x-6y+222z=1248                                                 (2)

19z+6y-52z=-304                                                      (3)


(1) +(2), you have

-39x+141z= 783                                                       (4)

(4) /3, you have

-13x +47z=261                                                          (4)


(2) +(3), you have

-47x+170z=944                                                       (5)


From ( 4) and (5), you have equations

-13x +47z=261                                                         (4)

 -47x+170z=944                                                       (5)


(4)*(-47);    (5)*13,  you have

611x-2209z=-12,267                                              (4)

-611x+2210z=12,272                                              (5)


(4)+(5), you have

z=5

Replace z=5 in (4), you have

611x- 2209*5=-12,267

611x- 11,045 =-12,267

611x=-1222

x= -2

Replace x=-2, z=5 in (1) , you have

9*(-2) +2y -27*5=-155

-18+2y-135=-155

-18+2y=-20

2y=-2

y=-1

Result (x,y,z)=( -2, -1 ,5)









3 0
3 years ago
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