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cricket20 [7]
3 years ago
6

Please helppppp !!!!!!!!!!! Will mark correct Brianliest !!!!!!!!!!!!!!

Mathematics
1 answer:
Mice21 [21]3 years ago
8 0

Answer:

the third side is \sqrt{85}

Step-by-step explanation:

root 85 is already the simplest form

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Helooooo?!!!!! 30 whole points
pentagon [3]

Answer:

I believe C, or the answer you have chosen, is correct.

Step-by-step explanation:

In this question, we add like, AKA similar, terms.

There is nothing to match x^2, so we leave it alone and put it at the head of equation since it has the highest power:

x^2

There is nothing to match -x, so we also leave it alone and put it next to x^2, keeping its sign:

x^2 - x

We can add 1 and 5 to get 6, so we put 6 next to the -x to get our final equation:

x^2 - x + 6.

See how easy that was? :) Hope this helps you and you get a good grade on your test!!

Please rate my answer and give me Brainliest!!!!

Have an awesome rest of your day! :)

7 0
3 years ago
Multiply (8 + 3i)(3 + 5i)
svetoff [14.1K]
12+49i
when you get i^2 it's the same as multiplying by -1 so 
factoring it out will turn out like this
15i^2+40i+9i+27
instead of 15 i^2 multiply 15 x-1
-15+49i+27
12+49i
6 0
3 years ago
Read 2 more answers
An inlet pipe can fill an artificial pond in 70 min. An outlet pipe can empty the same pond in 200 min. With both pipes open, ho
vivado [14]

It takes 107.692 minutes approximately to fill the pond

<em><u>Solution:</u></em>

Given that inlet pipe can fill an artificial pond in 70 min

So the inlet pipe can fill \frac{1}{70} of the pond in 1 min

An outlet pipe can empty the same pond in 200 min

So the outlet pipe can empty \frac{-1}{200} of pond in 1 min

Here negative sign denotes "empties the pond"

To find: With both pipe open, time taken to fill the pond

Let "x" be the time taken by pipes to fill the pond

With both pipes are left on, so together their rate is:

\frac{1}{x} = \frac{1}{70} - \frac{1}{200}

On solving,

\frac{1}{x} = \frac{200 - 70}{14000}\\\\\frac{1}{x} = \frac{130}{14000}\\\\x = \frac{14000}{130} = 107.692

Thus it takes 107.692 minutes approximately to fill the pond

5 0
3 years ago
(1 point) A coin, thrown upward at time t = 0 from an office in the Empire State Building, has height in feet above the ground t
mojhsa [17]

Answer:

The coin was thrown from 448 feet

Time to hit the ground is 7 seconds

Step-by-step explanation:

Given

h(t) =  -16(t - 7)(t + 4)

Solving (a): Height when coin is thrown

At this point t = 0

So, we have:

h(0) =  -16(0 - 7)(0 + 4)

Solve expressions in the brackets

h(0) =  -16(-7)(4)

h(0) =  448

<em>Hence, the coin was thrown from 448 feet</em>

Solving (b): Time to hit the ground

At this point, h = 0.

So, we have:

0 =  -16(t - 7)(t + 4)

Reorder

-16(t - 7)(t + 4) = 0

Divide both sides by -16

(t - 7)(t + 4) = 0

This gives:

t - 7 = 0      or      t + 4 = 0

t = 7   or     t = -4

Since, time can't be negative;

Time = 7\ seconds

4 0
4 years ago
A cylindrical candle has a diameter of 3 inches and a height of 3 inches.
inysia [295]

Answer: c

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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