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Mazyrski [523]
4 years ago
11

True or False? When listing the elements of a set, you enclose them in curly

Mathematics
1 answer:
slava [35]4 years ago
7 0

I believe this problem is true.

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15 arches decreased by 80%
morpeh [17]

If it decreases by 80٪, then only 20٪ remains.

15×20٪=15×20/100=15×0.2=3

Answer: 3

8 0
3 years ago
Read 2 more answers
Please help me with this problem, please
Harman [31]

Answer:

sin(x) = 5/13

cos(y) = 5/12

Therefore, sin(x) = cos(y)

Step-by-step explanation:

Trig ratios:

sin(\theta)=\dfrac{O}{H}\\\\\\cos(\theta)=\dfrac{A}{H}\\\\\\tan(\theta)=\dfrac{O}{A}

where \theta is the angle, O is the measure of the side opposite the angle, A is the measure of the side adjacent to the angle and H is the hypotenuse, of a right triangle

We have been given the measures of the two legs, so we can find the measure of the hypotenuse by using Pythagoras' Theorem a^2+b^2=c^2

(where a and b are the legs and c is the hypotenuse of a right triangle)

\implies 5^2+12^2=c"\\\\\implies 169=c^2\\\\\implies c=\sqrt{169}\\\\ \implies c=13

Now we can use the trig ratios:

\implies sin(x)=\dfrac{5}{13}

\implies cos(y)=\dfrac{5}{13}

Therefore, sin(x) = cos(y)

8 0
3 years ago
HELP FOR BRAINLEST!!
Tju [1.3M]

Answer:

I believe D is the correct answer.

Step-by-step explanation:

8 0
2 years ago
If the cost is $3000, and the revenue is $6000, what is the profit margin?
lorasvet [3.4K]

Answer: Wouldn't it be $3000 dollar profit? Because 6000-3000 is 3000

Step-by-step explanation:

3 0
3 years ago
What is 4x+19=7x+16?​
Nezavi [6.7K]
4x+19=7x+16
4x=7x-3
-3x=3
x=1
5 0
3 years ago
Read 2 more answers
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