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omeli [17]
3 years ago
6

4x + 4y = 20 2x - 2y = 2 .

Mathematics
1 answer:
Orlov [11]3 years ago
5 0

Answer: Can you tell me how do you want it answered?

Step-by-step explanation:

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Can someone help me out please?? I would really appreciate it.
Firdavs [7]

Answer:

C: x = 5 and y = (5√3)/2

Step-by-step explanation:

Looking at the triangle, we can use trigonometric ratios to find x and y since it's a right angled triangle.

Thus;

(5/2)/x = sin 30

x = (5/2)/½

x = 5

Similarly, (5/2)/y = tan 30

tan 30 in surd form is 1/√3

Thus;

(5/2)/y = 1/√3

y = 5/2 × √3

y = (5√3)/2

4 0
3 years ago
Find the domain of the function
Natasha_Volkova [10]

Answer:

The domain is-3<x<3. It can also be (-∞,-3) U (-3,3) U (3, ∞).

Step-by-step explanation:

The U stands for Union. The second  answer usually used only for college algebra.

4 0
3 years ago
If 9(x + 5) = 63 , what is the value of x + 5 ?
alina1380 [7]
X=2 so the value of x+5 is 7
3 0
3 years ago
Tell whether the angles are complementary or supplementary.Then find the value of x
choli [55]
Supplementary because the line equals 180°
(x-21)+x
2x-21=180
2x=201
×=100.5°
8 0
3 years ago
A machine used to make badges costs $120. It costs $5 to make each badge. Write a function to show the total cost f(n) of making
vladimir1956 [14]
First, I find it helpful to write the function myself.

There is a set fee of $120, and $5 per <em>n</em> badges.

<em />120 + 5<em>n
</em>
This is a basic model. Now we can see if any match.

f(n) = 5<em>n</em> + 120 matches. 

Let me know if you found any errors.
3 0
4 years ago
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