Factorise FULLY and show working out

1 answer:

6 0

$9x^2-9=9(x^2-1)=9(x-1)(x+1)$

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Vesnalui [34]

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2 years ago

Kruka [31]

Answer:

$30

Step-by-step explanation:

Divide the cost ($75) by the yards (2 1/2) to get $30 per yard.

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2 years ago

sveticcg [70]

It is 96.6 repeating. to get this answer, you add up all the numbers then divide the answer by hiw many numbers there are

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3 years ago

Brums [2.3K]

X+y=23
X-y=7.4

X+y=23
y=23-X

X-y=7.4
(23-y)-y=7.4
23-2y=7.4
-2y=-15.6
Y=7.8

X+y=23
X+7.8=23
X=15.2

Therefore the two numbers are 7.8 & 15.2

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2 years ago

AURORKA [14]

Answer:

1.1 ,-9.1

Step-by-step explanation:

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3 years ago