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Mama L [17]
3 years ago
15

Please Help me! 20 points

Mathematics
1 answer:
malfutka [58]3 years ago
6 0

Answer:

-9/4 ÷ (-2/3)

Step-by-step explanation:

-(2 1/4) ➡ -9/4

-2/3 ➡ (again a reciprocal needed) -3/2 since we need the result to be positive both expression should remain negative so the answer is -9/4 ÷ -2/3

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A conical-shaped umbrella has a radius of 0.4 m and a height of 0.45 m. Calculate the amount of fabric needed to manufacture thi
bonufazy [111]

Answer:

The correct answer will be "0.756596 m²".

Step-by-step explanation:

The given values are:

The radius of an umbrella,

r = 0.4 m

The height of an umbrella,

h = 0.45 m

As we know,

The lateral surface of an umbrella will be:

⇒  \pi r\sqrt{r^2+h^2}

On substituting the values, we get

⇒  \pi \times 0.4\sqrt{(0.4)^2=(0.45)^2}

⇒  0.756596 \ m^2

So that the amount of fabric needed will be "0.756596 m²".

7 0
3 years ago
Elliot has a total of 26 books. He has 12 more fiction books than nonfiction books. Let x represent the number of fiction books
Llana [10]
X and y are books
x is fiction
y=nonifiction

x+y=36


x=12+y

12+y+y=26
2y+12=26
minus 12
2y=14
divide 2
y=7


sub
x=12+y
x=12+7
x=19

nonfiction=7
5 0
3 years ago
Solve:C=10d + 5n for n
katovenus [111]

n =  - 2d +  \frac{c}{5}
hope this helps
5 0
3 years ago
HELPP!!<br> Select the correct answer.<br> What is the value of arcsin ?
Schach [20]

For this case we have that by definition, it is called arcsine (arcsin) from a number to the angle that has that number as its sine.

We must find the arcsin (\frac {\sqrt {2}} {2}). Then, we look for the angle whose sine is \frac {\sqrt {2}} {2}.

We have to, by definition:

Sin (45) = \frac {\sqrt {2}} {2}

So, we have to:

arcsin (\frac {\sqrt {2}} {2}) = 45

Answer:

Option B

5 0
3 years ago
Read 2 more answers
The number of pieces of popcorn in a large movie theatre popcorn bucket is normally distributed, with a mean of 1515 and a stand
Murrr4er [49]

Answer: 99.7%, Im pretty confident about that. Im taking the test right now.

Step-by-step explanation:

3 0
3 years ago
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