3 years ago

23, A right triangle is inscribed in a circle of radius 9. The length of the hypotenuse of the right

Mathematics

1 answer:

aivan3 [116]3 years ago

5 0

Answer:

Step-by-step explanation:

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What are the solutions of the quadratic equation? 4x^2+34x+60=0

insens350 [35]

Answer:

Option 3) -6,-5/2

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$4x^{2} +34x+60=0$

$a=4\\b=34\\c=60$

substitute in the formula

$x=\frac{-34(+/-)\sqrt{34^{2}-4(4)(60)}} {2(4)}$

$x=\frac{-34(+/-)\sqrt{196}} {8}$

$x=\frac{-34(+/-)14} {8}$

$x_1=\frac{-34(+)14} {8}=-\frac{20}{8}=-\frac{5}{2}$

$x_2=\frac{-34(-)14} {8}=-6$

6 0

3 years ago

What is the variable for 49n+986=-43?

tankabanditka [31]

Answer:

according to another user on Brainly the variable is n=-21

Step-by-step explanation:

subtract 986 from both sides first.why? Because that is that is going to isolate the variable.

hope this helps! :)

4 0

2 years ago

4 times a number is decreased by 9, the result is the same as when 15 is added to twice the number. find the number

igor_vitrenko [27]

Answer:

Step-by-step explanation:

4*x-9=2x+15

4x-9=2x+15

-2x -2x

2x-9=15

2x=24

x=12

5 0

2 years ago

How do you solve a question like this?

chubhunter [2.5K]

$4x-4=2x+10\\
2x=14\\
x=7$

3 0

3 years ago

Simplify. <br><br> 4 + 3(10 - 23)

aliina [53]

4 + 3(10 - 23)

4 + 3 × (-13)

4 - 39

-35 << answer

hope this helps, God bless!

5 0

3 years ago

Read 2 more answers