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MAXImum [283]
3 years ago
14

Which of the following is the solution to the quadratic equation x2−10x+21=0 ?

Mathematics
2 answers:
Annette [7]3 years ago
7 0

Step-by-step explanation:

the answer is the image above

Bess [88]3 years ago
3 0

Answer:

x=3  and x=7

Step-by-step explanation:

x2 - 10x + 21=0

a=1, B=-10, c=21

delta= b2 - 4(ac)

if delta >0 => have two answer

x1= -b - _/delta / 2a = -(-10) - _/16 / 2.1 = 3

x2= -b + _/delta /2a = -(-10) + _/16 / 2.1= 7

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Solve for x 6x^2 +7x=20
Sunny_sXe [5.5K]

Answer:

x=4/3    ,   x=-5/2

Step-by-step explanation:

6x^2 +7x=20

6x^2+7x-20=0

(3x−4)(2x+5)

3x-4=0 ,   2x+5=0

3x=4     ,   2x=-5

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6 0
3 years ago
"In the 45°-45°-90° triangle above, r = 10. Find the other two lengths.
Basile [38]

We are given a right triangle that has angles of 45°-45°-90°. This would indicate that the triangle is an isosceles type. We can use some trigonemetric functions to solve for the other legs. We do as follows:

 

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<span>Hope this answers the question. Have a nice day.</span>

5 0
3 years ago
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frosja888 [35]

Answer:

  • See below

Step-by-step explanation:

<u>Use the slope-intercept form, which will be in this case:</u>

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<u>The equation is:</u>

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3 years ago
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