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3 years ago

Factorise completely 8y^2-24xy

Mathematics

1 answer:

Ainat [17]3 years ago

3 0

The answer that I got was:
8y (y-3x)
because I divided everything by 8y and then just did simple math
hope this helps

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The circumference of Earth is 40,075 kilometers. What would be a reasonable estimate for the circumference of Earth?

Illusion [34]

40,075 kilometers?

If you're going for a very rough estimate without knowing that the circumference is 40,075, I'd say to go for 40,000 but I'm not really sure what you're asking.

6 0

3 years ago

At the beginning of an environmental study, a forest covered an area of 1500 km2 . Since then, this area has decreased by 9.8% e

fredd [130]

Answer:

$A(t)=(0.902)^t \cdot 1500$ $[km^2]$

Step-by-step explanation:

In this problem, the initial area of the forest at time t = 0 is

$A_0 = 1500 km^2$

After every year, the area of the forest decreases by 9.8%: this means that the area of the forest every year is (100%-9.8%=90.2%) of the area of the previous year.

So for instance, after 1 year, the area is

$A_1 = A_0 \cdot \frac{90.2}{100}=0.902 A_0$

After 2 years,

$A_2=0.902 A_1 = 0.902(0.902A_0)=(0.902)^2 A_0$

And so on. So, after t years, the area of the forest will be

$A(t)=(0.902)^t A_0$

And by substituting the value of A0, we can find an explicit expression:

$A(t)=(0.902)^t \cdot 1500$ $[km^2]$

8 0

4 years ago

Please help <br> Workout a b and c

STatiana [176]

Answer:

a=21° b=70°

Step-by-step explanation:

a=21°(Vertically Opposite Angles)

b+110°=180° (linear pair)

b=180-110

b=70°

[please mark me brainliest]

3 0

3 years ago

Read 2 more answers

Please help I'm so confused

blagie [28]

Answer:

(-2, -4), (-1, -1), (0, 0), (1, -1), (2, -4)

Step-by-step explanation:

You plug in x values to get the y values are dot-in the points!

y = -x^2

You plug in -2 and get -(2)^2 = -(4) = -4

Same thing with all other values.

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3 years ago

A youth football team has three out of 11 players who played quarterback previously. Based on the information, if there are 250

Anton [14]

It would probably be A

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3 years ago