MATHEMATICS COLLEGE

If a car travels at a constant speed of 45km/hr how long will a journey of 270km take?

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Answers

Answer 1
Answer: the answer is 6hours because 270 divided by 45 is 6
Answer 2
Answer:

Answer:

I think the answer is "6" but I could be wrong.

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Limit of x^2-81/x+9
As x goes toward -9

Answers

Hello,

Use the factoration

a^2 - b^2 = (a - b)(a + b)

Then,

x^2 - 81 = x^2 - 9^2

x^2 - 9^2 = ( x - 9).(x + 9)

Then,

Lim (x^2- 81) /(x+9)

= Lim (x -9)(x+9)/(x+9)

Simplity x + 9

Lim (x -9)

Now replace x = -9

Lim ( -9 -9)

Lim -18 = -18
_______________

The second method without using factorization would be to calculate the limit by the hospital rule.

Lim f(x)/g(x) = lim f(x)'/g(x)'

Where,

f(x)' and g(x)' are the derivates.

Let f(x) = x^2 -81

f(x)' = 2x + 0
f(x)' = 2x

Let g(x) = x +9

g(x)' = 1 + 0
g(x)' = 1

Then the Lim stay:

Lim (x^2 -81)/(x+9) = Lim 2x /1

Now replace x = -9

Lim 2×-9 = Lim -18

= -18

Louden County Wildlife Conservancy counts butterflies each year. Data over the last three years regarding four types ofbutterflies are shown below. What is the average number of Variegated Fritillaries for all three samples?
2009
Meadow Fritillary
Variegated Fritillary
Zebra Swallowtail
Eastern-Tailed Blue
Louden County Butterfly Count
2010
Meadow Fritillary
34
Variegated Fritillary 95
Zebra Swallowtail
Eastern-Tailed Blue 168
2011
Meadow Fritillary
Variegated Fritillary
Zebra Swallowtail
Eastern-Tailed Blue
14
63
10
170
|
33
242
55
165

Anwser choices
A)55
B)83
C)106
D)165

Answers

Answer:

the answer is A

Step-by-step explanation:

Which expression is equivalent to 2(a+3) when a= 3?O 2(3)
5(3)
O 2(3)+3
2(3)+6

Answers

Answer:

2(a+3)= 0 2(3)+3

Step-by-step explanation:

Answer:

It's D :)

Step-by-step explanation:

I Did the unit test review on edge.

EXAMPLE: If the function f(x) = 2x==x+4 is restricted to a domain interval of
-4 sxs 4, is the domain over the interval continuous or discrete,
and what is the range of the function?

Answers

The range of the given function in interval notation is 2\le y\le6.

The given function is f(x)=(1)/(2)x+4 and the domain interval is -4\le x\le4.

The domain and range are defined for a relation and they are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively.

Substitute x=4 in the given function, we get

f(4)=(1)/(2)*4+4

f(4)=6

Substitute x=-4 in the given function, we get

f(-4)=(1)/(2)*(-4)+4

f(4)=2

So, the range is 2\le y\le6

Therefore, the range of the given function is 2\le y\le6.

To learn more about the domain and range visit:

brainly.com/question/28135761.

#SPJ3

Answer:b

Step-by-step explanation:

Plz help i dont understand and if u can help i will mark brainliest!!​

Answers

Answer:

Let fertilizer be F

and peat moss be P

since F is proportional to P

F = kP

where, k = constant of proportionality

k = F/P

putting in the values,

k = (3/4) /12

k = 3/4 * 1/12

k = 1/16

Therefore the constant of proportionality is 1/16.

The number line below shows points A B C D and Ea. subtracting 2 from point e
b. adding -4 to point b
c. adding -9 to point a
d. subtracting 14 from point c​

Answers

the answer to this is B
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