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lutik1710 [3]
2 years ago
13

Find unknown angles, value of 'x' and unknown sides:​

Mathematics
1 answer:
Ganezh [65]2 years ago
4 0
Tan40=x/8
Ans: x=6.7127970
X=6.71(3 s.f)
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Use the substitution method to solve each system of equations. Write the answer in ordered pairs.
tatyana61 [14]

x -y = 1

5x + 3y = 45

Solve the first equation for x: x = y + 1

Substitute x in the second with y + 1

5x + 3y = 45

5(y + 1) + 3y = 45

5y + 5 + 3y = 45

8y + 5 = 45

8y = 40

y = 5

Substitute 5 for y in x = y + 1

x = y + 1

x = 5 + 1

x = 6

Answer: (6, 5)

5 0
3 years ago
Find the exact value of each expression, if it defined. ( if answer is undefined, enter undefined) tan (-1)
Triss [41]

Answer:

tan(-1) \approx -0.02

Step-by-step explanation:

The given expression is

tan(-1)

The tangent of -1 is defined, it's around -0.02.

The tangent is a trigonometric function with a period of \pi, where each period is separated by a vertical asymptote which indicates that the function is not determined through all its domain, that's what the question refers to when it says "if is undefined, enter undefined".

However, at x=-1, the tangent is determined, that means, there's no asymptote on that coordinate, that's why it has a "determined value", which is -0.02 approximately.

tan(-1) \approx -0.02

6 0
3 years ago
benny bought 8 new basketball trading cards to add to his collection. There are now only 44 cards left.How many cards did benny
Mashcka [7]
<span>So the equation: (x+8) divided by 2 =24</span>
5 0
3 years ago
Find the x and y intercepts of each linear function
Nezavi [6.7K]

Answer:

x-int: 2

y-int: -2

Step-by-step explanation:

x-int is where the line crosses the x axis (horizontal line) and y-int is where the line crosses the y axis (vertical line).

8 0
3 years ago
<img src="https://tex.z-dn.net/?f=r%20-%207%20%3D%207%20What%20ir%20r" id="TexFormula1" title="r - 7 = 7 What ir r" alt="r - 7 =
Art [367]
R-7=7 add the seven from both sides, leaving the r alone, because this is what you are trying to find. Thus the answer is r=14.

8 0
3 years ago
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