Attachment image = question please answer

Mathematics

1 answer:

Svet_ta [14]3 years ago

8 0

Answer:

In group A, they have at least one 90 degree angle. In Group B, they do not have any 90 degree angles.

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If x^2 - 6xy = z - 9y^2, make x the subject of the formula

alukav5142 [94]

$~~~~x^2-6xy=z-9y^2\\\\\implies x^2- 2\cdot x\cdot 3y + (3y)^2 - (3y)^2 = z-9y^2\\ \\\implies (x-3y)^2 -9y^2 = z-9y^2\\\\\implies (x-3y)^2 = z\\\\\implies x - 3y =\pm\sqrt z\\\\\implies x = 3y\pm\sqrt z$

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3 years ago

Help, will mark brainliest!! and give 5 stars this is due 2day!!

Leto [7]

11. brother = ???

???- 12 = 14

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3 years ago

What is the domain of the function graphed below!?

enot [183]

Answer:

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Step-by-step explanation:

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3 years ago

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sukhopar [10]

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3 years ago

1. ABCD is a trapezoid with midsegment EF. If AB = 12 and CD = 24, what is the length of EF?

natali 33 [55]

For all of these answers, the equation used was (AB + CD)/2 = EF

1.12+24=36 36/2=18
2. 21 + 35 = 56 56/2 = 28
3. (7 + EF)/2 = 9
multiply by 2
7 + EF = 18
subtract 7
EF = 11

4. (AB + 32)/2 = 22
Multiply by 2
AB + 32 = 44
Subract 32
AB = 12

5. Average

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4 years ago

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