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2 years ago

DUE TOMRROW IF NASWERED PROPERLY ILL GIVE BRAINIEST AND 50 POINTS IN ANEW QUESTION ONLY ANSwERED PROPERLY

Mathematics

1 answer:

yarga [219]2 years ago

4 0

Answer:

11. a. yes b. no

12. i. yes ii. yes

13. a. 31/35 b. 1 5/9 c. 1/30 d. 1/15

Step-by-step explanation:

11. add them

12. estimate

13. add or subtract

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Solve the system of equations and choose the correct ordered pair.

Dafna1 [17]

So for this, I will be doing the elimination method. Firstly, multiply both sides of the first equation by 2:

$6x-8y=52\\2x+8y=-36$

Next, add the two equations together to get $8x=16$ . From here you can solve for x.

For this equation, just divide both sides by 8 and your first answer will be $x=2$

Now that we have the value of x, substitute it into either equation to solve for y:

$3*2-4y=26\\6-4y=26\\-4y=20\\y=-5\\\\2*2+8y=-36\\4+8y=-36\\8y=-40\\y=-5$

<u>In short, the solution is (2,-5), or A.</u>

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2 years ago

Read 2 more answers

Rewrite the quadratic function in vertex form.<br> Y=3x^2-12x+4

chubhunter [2.5K]

Answer:

$\large\boxed{y=3(x-2)^2-8}$

Step-by-step explanation:

The vertex form of an equation of a parabola y = ax² + bx + c:

$f(x)=a(x-h)^2+k$

(h, k) - vertex

$h=\dfrac{-b}{2a},\ k=f(h)$

We have the equation:

$y=3x^2-12x+4\\\\a=3,\ b=-12,\ c=4$

Substitute:

$h=\dfrac{-(-12)}{2(3)}=\dfrac{12}{6}=2\\\\k=f(2)=3(2^2)-12(2)+4=3(4)-24+4=12-24+4=-8$

Finally:

$y=3(x-2)^2+(-8)=3(x-2)^2-8$

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2 years ago

Sisters math question

zalisa [80]

Answer:

How does one find use partial quotients for subration

Step-by-step explanation:

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Talja [164]

Answer:

140

Step-by-step explanation:

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2 years ago

4x − 8y = –20<br> 4x − 7y = –15

Alja [10]

Y = 5
x = 5
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2 years ago