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4 years ago

Help 3 through 5 plz

Mathematics

1 answer:

Basile [38]4 years ago

4 0

3. would be obtuse ( degree higher than 90 degrees)

4. would be acute ( degree lower than 90 degrees)

5. would be right ( degree exactly 90 degrees)

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You are painting a room. After 18 minutes, 64% of the room still needs painted. How long does it take to paint the entire room?

kvv77 [185]

Around 15.33% of the room would need to still be painted

> 18/1 = 64/100
[÷2]
> 9/1 = 32/100
[÷3]
> 3/1 = 10.67/100

> 64% + 10.67% = 74.67% painted

7 0

4 years ago

If angle a has the terminal ray that falls in the fourth quadrant and cosine a equals 5/9 then determine the value of sin a in s

Tema [17]

Answer: $-\dfrac{2\sqrt{14}}{9}$

Step-by-step explanation:

Given

$\cos a=\dfrac{5}{9}$

$a$ lies in the fourth quadrant

So, sine must be negative in the fourth quadrant

Using identity $\sin ^2 x+\cos^2 x=1$ to find sine value

$\Rightarrow \sin^2 a=1-\dfrac{5^2}{9^2}$

$\\\\\Rightarrow \sin^2 a=1-\dfrac{25}{81}\\\\\\\Rightarrow \sin^2 a=\dfrac{56}{81}\\\\\\\Rightarrow \sin a=-\sqrt{\dfrac{56}{81}}\\\\\\\Rightarrow \sin a=-\dfrac{2\sqrt{14}}{9}$

8 0

3 years ago

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Leno4ka [110]

Answer:

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Step-by-step explanation:

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3 years ago

In a river, a trout passed beneath a woman who was swimming at 1,800 centimeters per minute. The trout swam 8,000centimeters dir

storchak [24]

Answer:

It would approximately be 3.73 m/h

Step-by-step explanation:

0.8 mins is 48 seconds

I then divided 8000 by 48 seconds to see how many cm it traveled per second.

It traveled 166.666666667 cm per second

I then converted cm to feet

so it was 5.468066491699474 feet per second

I then converted feet to miles, so it was 0.0010356186537309611598 miles per second.

Then I multiplied it by 60 so it was 0.06213711922 miles per minute.

Finally I multiplied it by 60 again to make it 3.72822715343 miles per hour.

I rounded it to the nearest hundredth making it 3.73 m/h

7 0

3 years ago

Using the graph below, what would the y-value (range) be for an x-value (domain) of -3?

Elza [17]

There is no graph havre me a nice day

8 0

3 years ago

Read 2 more answers