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kherson [118]
3 years ago
8

What is √ − 3 ⋅ √ − 27 =

Mathematics
1 answer:
ipn [44]3 years ago
8 0

<u>We are given the expression:</u>

√-3 * √-27

__________________________________________________________

<u>Explaining the concept:</u>

We know that:

√ab = √a * √b

Using this concept, we will simplify the given expression and solve it

__________________________________________________________

<u>Simplifying the expression:</u>

√-3 * √-27

√(-1*3) * √[(-1)*(3)(3)(3)]

√-1 * √3 * √-1 * √3 * √3 * √3

(√-1 * √-1) * (√3 * √3 * √3 * √3)

(√-1)² * (√3)² * (√3)²

-1 * 3 * 3

-9

Hence, after simplifying the given expression, we get -9

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le Gianna just started a running plan where she runs 20 miles the first week and then increases the number of miles she runs by
yuradex [85]

Answer:

Gianna ran 40 miles over the course of 17 weeks.

Step-by-step explanation:

20 miles in the first week.

5% increase each week.

17 weeks.

  • 5% * 20 = 1

1 mile increase each week.

  • 17 * 1 = 17

17 mile increase over the course of 17 weeks.

  • 20 + 17 = 37

37 miles over the course of 17 weeks.

Round 37 to the nearest whole number.

  • 37 ^ 40

4 0
3 years ago
If the new building is 22.5 inches from the gymnasium in the model, what would the actual distance from the gymnasium to the new
Klio2033 [76]

Answer:

yes

Step-by-step explanation:

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3 years ago
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A book falls from a shelf that is 5 feet above the floor. A model for the height h in feet if an object dropped from an initial
Brums [2.3K]

Answer:

About 0.559 seconds

Step-by-step explanation:

The height equation is:

h=-16t^2+h_0

Where h_0 is the initial height of the book, which is 5, so we can write:

h=-16t^2+5

Now, we want time it took for the book to reach ground (h = 0)

So, we substitute h = 0 and solve for t:

h=-16t^2+5\\0=-16t^2+5\\16t^2=5\\t^2=0.3125\\t=0.5590\\t=0.559

It took about 0.559 seconds for the book to reach the ground

5 0
4 years ago
Find the height of a prism with volume 720cm3 and base area 45cm2
Morgarella [4.7K]

Answer:

The height is 16 cm

Step-by-step explanation:

It's just v/b

720/45=16

The height is 16 cm

3 0
3 years ago
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The student council is hosting a drawing to raise money for scholarships. They are selling tickets for $9 each and will sell 500
ryzh [129]

Answer:

-$2.32

Step-by-step explanation:

Give that

The selling price per ticket is $9

And the number of tickets sold is 500

So,

There is one grand prize, three $300 second prize, and eleven $40 third prizes

We need to find out the expected value of the profit

= \frac{1}{500} \times 2000 +  \frac{3}{500} \times 300 + \frac{11}{500} \times 40\\\\

= 4 + 1.8 + 0.88

= 6.68

Now the expected profit is

= $6.68 - $9

= -$2.32

6 0
3 years ago
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