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lakkis [162]
3 years ago
14

What is the value of the y-coordinate of point A

Mathematics
1 answer:
kap26 [50]3 years ago
6 0

Answer:  -\dfrac{1}{2}

<u>Step-by-step explanation:</u>

The coordinate at -30° <em>(-30° = 330°)</em> = \bigg(\dfrac{\sqrt3}{2},-\dfrac{1}{2}\bigg)\\

the x-value is  \dfrac{\sqrt3}{2}

the y-value is  -\dfrac{1}{2}\\

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Among 18 students in a room, 7 study mathematics, 10 study science, and 10 study computer programming. Also, 3 study mathematics
tatyana61 [14]

Answer:

2 students study none of the subjects.

Step-by-step explanation:

Consider the attached venn diagram. First, we place that 1 student studies the three subjects. Then, we notice that 3 students study math and science, then 2 students study math and science only, since we have 1 that studies the three subjects. In the same fashion, we have that 3 students study Math and computer programming only (since they are 4 in total). Note that since 7 students study math, and we already have 6 students in our count in the math subject this implies that 1 student studies only math (the total number of students inside the math circle must add to 7).

We also have that 4 students study science and computer programming only. Which implies that we must have 3 students that study science only (10 students that study science in total) and 2 students study computer programming (for a total of 10 students). The total number of students that study none is the total number of students (18) minus the amount of students that is inside the circles (16) which is 2.

8 0
3 years ago
Read 2 more answers
The sum of 139 and the product of a number raised to the third power and 17. In symbols, the phrase is written as.
qwelly [4]

Answer:

<u>y = 139 + x³ + 17 </u>

Step-by-step explanation:

The word "sum" means the amount resulting from addition in an equation. This means that we are adding all of these numbers together.

The word "product" means the amount resulting from multiplication in an equation, this means we need to find the product of a number multiplied by itself three times. Since we don't know what number it is, we can use the variable 'x'.

So, you would be adding 139, the product of x³, and 17, which would be written as y = 139 + x³ + 17.

7 0
2 years ago
Are the expressions 3{y+1} and 3y+3 equivalent for any value? explain
andre [41]

Answer:

Yes

Step-by-step explanation:

The distributive property states that a(b+c) = ab+ac. Working out the first equation, we see that 3(y+1) is 3y+3. Because the second equation is 3y+3, they are also equal.

8 0
3 years ago
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What is the order of this matrix?
myrzilka [38]

Answer:

I do

Step-by-step explanation:

not know

7 0
3 years ago
Please do your best to give me the correct answer! thank you so much! :)
Nataliya [291]
Answer: m= -1/8

Good luck !
6 0
2 years ago
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