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2 years ago

PLEASE HELP WITH THIS I'M HAVING ALOT OF TROUBLE

Mathematics

1 answer:

mel-nik [20]2 years ago

3 0

1/4=a
2/5=b
4/10=2/5=b
25/100=1/4=a
Good Luck

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Joan waters her plants each day with gallons of water. With a new irrigation system in place, she uses gallons of water each day

vampirchik [111]

Answer:

$172\frac{1}{2}$ gallons

Step-by-step explanation:

Considering she waters her plants with 25 1/2 gallons i.e 51/2

and with the new system, she does it with 19 3/4 i.e 79/4

taking the difference:

$\frac{51}{2} - \frac{70}{4}$ = $\frac{23}{4}$ gallons per day

For 30 days:

30 x $\frac{23}{4}$ = 172.5 or $172\frac{1}{2}$ gallons

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Answer:

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2 years ago

Is domain of f(x,y) = 1 + (4 -y^2)^1/2 open, closed or neither is it bounded or unbounded?

omeli [17]

Answer:

Closed and Bounded.

Step-by-step explanation:

Hi there!

1) Let's start by finding the values in which the function is defined. Remember that this can be rewritten:

$f(x,y) = 1 + (4 -y^2)^{\frac{1}{2}} \:id\:est\:f(x,y)=1+\sqrt{(4 -y^2)}$

Since every quadratic root are defined for values $\geq$ 0 then, this help us to understand that we need calculate what interval this Domain is:

$4-y^{2} \geq 0\\4-y^{2}-4\geq -4\\-y^{2}\geq-4 \\y^{2}\leq4\\-2\leq y\leq 2$

$D=[-2,2]$

2) Graphically speaking, the domain is closed. For the values -2 and 2 are included, and bounded.

Bounded functions have all of their points contained by some circle origin centered. Check it out below.

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3 years ago

Solve this expression : 5 + 6 x 3 + (7 - 3) x (16 divided by 2) - 3 =

egoroff_w [7]

It is 52. Here is why...
5 + 6 x 3 + (7 - 3) x (16 divided by 2) - 3
= 5+18+4 x 8-3
=5+18+ 32-3
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=55-3
=52
If you have any more question,please feel free to ask me. ;)

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Elina [12.6K]

Answer:

$7.25

Step-by-step explanation:

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