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Gnesinka [82]
3 years ago
8

What is the value of the expression 2 to the power of 2 + 8 to the power of 2 ÷ 2 to the power of 2?

Mathematics
1 answer:
Naily [24]3 years ago
4 0
That's (4+64)/ 4. 68/4= 17
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A destroyer on patrol spots an aircraft at an altitude of 10,000 ft and an angle of elevation of 20⁰. How far is the aircraft fr
Reika [66]

sin= \frac{opp}{hyp} \\\\sin (20) = \frac{10000}{hyp}\\\\hyp= \frac{10000}{sin(20)} \\\\hyp= 29238 ft

The aircraft is 29238 ft from the ship

//

Note: this is based on my assumption that we are looking for the hypotenuse.

If we are looking for the adjacent side, then the answer would be 27475 ft.

4 0
2 years ago
Can you please tell me where I did a mistake.
oksano4ka [1.4K]
Last one should be less than 3/4
7 0
3 years ago
Isaac has 21 green marbles and 7 blue .He wants to place them in identical groups without any marbles left over.What is the grea
dybincka [34]

Answer:

7 groups

Step-by-step explanation:

Each group would have 1 blue marble and 3 green marbles

8 0
3 years ago
How do I solve this equation to get the solution?<br><br> y= -2x - 1<br><br> -3x + 6y = 24
swat32
There are a few ways to solve this. The method I will use is the substitution method. Since they give us a "y = " statement, we can replace the y in the second equation with what it gives us to the right of the equal sign.

- 3x + 6(- 2x - 1) = 24

Simplify by using the distributive property. 

- 3x + 6(- 2x) + 6(- 1) = 24
- 3x - 12x - 6 = 24.

Combine like terms

- 15x - 6 = 24

Add 6 to each side.

- 15x = 30

Divide both sides by - 15 to isolate variable X

x = 30 / - 15
x = - 2.

Now plug in the x-value we've found back into the first equation.

y = - 2( - 2) - 1
y = 4 - 1
y = 3

Your answer is (- 2, 3)
6 0
3 years ago
Out of 230 racers who started the marathon,
schepotkina [342]

Answer:

6.96%

Step-by-step explanation:

Assuming that the total number of races who did not finish the race are the ones who gave up and were disqualified:

(14+4)/230 = 0.06957

convert to percentage 0.06956*100= 6.957%

8 0
3 years ago
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