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lawyer [7]
2 years ago
5

Brainliest reward if you get this right plus 20 points

Mathematics
1 answer:
SOVA2 [1]2 years ago
3 0

Answer:

The equation of the relation ⇒ y=\frac{6x}{z}

y = 18

Step-by-step explanation:

∵ y ∝ x/z

∴ y = kx/z

∵ y = 18 , x = 15 and z = 5

∴ 18 = 15k/5 ⇒ 18 = 3k

∴ k = 18/3 = 6

∴ y = 6x/z

∵ x = 21 and z = 7

∴ y = (6 × 21)/7 = 18

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Use the quadratic formula to find the solutions to the quadratic equation below x^2-7x-3=0
cupoosta [38]

the roots are \frac{7+\sqrt{61} }{2} and \frac{7-\sqrt{61} }{2}

Step-by-step explanation:

here we use Shridhar acharya formula

if ax^{2} + bx +c = 0 is the quadratic equation

the the roots are , \frac{-b +\sqrt{b^{2-4ac} } }{2a} and \frac{-b -\sqrt{b^{2-4ac} } }{2a}

comparing with the equation we get a=1 b= -7 c = -3

hence the roots are \frac{7 +\sqrt{7^{2-4X1X(-3)} } }{2X1} and \frac{7 -\sqrt{7^{2-4X1X(-3)} } }{2X1}

= \frac{7+\sqrt{61} }{2} and \frac{7-\sqrt{61} }{2}

5 0
3 years ago
What is the value of the function f(x) = 2x2 + 3 when x = 2?<br> 7<br> 19<br> 11<br> –1
blondinia [14]
Plug in 2 for your x, you'll get 2(2^2)+3, which becomes 2(4)+3, 8+3, 11. 
3 0
3 years ago
Read 2 more answers
Your friends asks you to bring a couple of bags of chips to his party. There are several brands of chips, each a different size
Wewaii [24]

Answer:

i will buy wo different with good price  

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the domain for the rational function:
jenyasd209 [6]

Answer:

3rd Option

Step-by-step explanation:

Since the denominator cannot equal 0, x ≠ 5. Therefore, our domain stops and starts again at 5. So our answer is 3rd option.

3 0
3 years ago
Help please :D :D :D
SVEN [57.7K]

Hey there!

I'm thinking B because it just makes the most sense reading it aloud. Quick tip though when there's a question like this just read the paragraph or sentences with all the possibilities in the blanks and you can kind of just tell which one it is by the way it sounds, you know?

Hope I helped, lemme know if I'm correct please! Have a spectacular day!

5 0
3 years ago
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