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3 years ago

Can someone explain how im meant to do this please? :)

Mathematics

1 answer:

valina [46]3 years ago

7 0

Answer:

you have to do

92×98=9016

then 9016=10(here we roud to 1 signification figure)

49×138=6762

6762=6

216×876=189216

189216=1

i think it’s the answers

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3 years ago

Which gives 28 + 24 as a product of the GCF and a sum?

VashaNatasha [74]

Answer:

b. 4 (7 + 6)

Step-by-step explanation:

Finding the GCF between 28 and 24:

We keep dividing while both numbers can be divided by the same factor. So

28 - 24|2

14 - 12|2

7 - 6

There is no number for which 7 and 6 are both divisible by, so the GCF between 28 and 24 is 4.

Simplifying in function of the GCF:

Now, we put 4 in evidence, and divide the rest of the expression by 4. So

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3 years ago

Determine whether the relations represent y as a function of x.

madam [21]

Answer:

Both of those are functions.

Step-by-step explanation:

$y=x^2$ is a parabola that opens up.

Any upward or downward parabola is a function because they pass the vertical line test.

$x=\pm \sqrt{1-y}{/tex]Square both sides:[tex]x^2=1-y$

Subtract 1 on both sides:

$x^2-1=-y$

Multiply both sides by -1:

$-x^2+1=y$

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If $a>0$ then it is open up.

If $a$ then it is open down.

Upwards and downward parabolas will always be functions.

$x=ay^2+by+c$ are also parabolas but these open to the left or right. These will not be functions because they will not pass the vertical line test.

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3 years ago