3 years ago

QUICK I NEED HELP!!

Mathematics

1 answer:

natta225 [31]3 years ago

4 0

7 (6) + 14!!! And this needs to be 20 characters long so I’m adding this

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Need help asap (giving brainliest)

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3 years ago

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Solve the simultaneous equation x^2-4y^2=9 and x+2y=1

Salsk061 [2.6K]

Answer:

x=5,y=-2

Step-by-step explanation:

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Find the value of k by<br>quardractic equation two real and equal roots<br>5x - 2kx +20=0

kotegsom [21]

Answer:

k = +10 or -10

Step-by-step explanation:

It's given in the question that the roots of the eqn. are real and equal. So , the discriminant of the eqn. should be equal to 0.

$= > {b}^{2} - 4ac = 0$

$= > {( - 2k)}^{2} - 4 \times 5 \times 20 = 0$

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$= > 4( {k}^{2} - 100) = 0$

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3 years ago

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Someone who's good at math please help me!!!

timurjin [86]

#1.
Here what you do is cross multiply.
$\frac{8x}{13x}$
#2.
Same as #1, just cross multiply.
$\frac{9x}{12}$

You get the gist?

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3 years ago

To rent a building for a school dance Eva paid $120 +2.53 students who attend it if you pay the total cost of $325 how many seas

Fantom [35]

Answer:

Step-by-step explanation:

325-120=205

205/2.53=81

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3 years ago

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