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ivolga24 [154]
2 years ago
11

Find sin(α) in the triangle.

Mathematics
1 answer:
Anna71 [15]2 years ago
6 0

Answer:

sin a = 0.689

Step-by-step explanation:

explanation is in the image above

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Very urgent please help me
lorasvet [3.4K]

Answer:

Step-by-step explanation:

8r + 9 + 7r + 6 = 90

15r + 15 = 90

15r = 75

r = 5

8(5) + 9 = 40 + 9 = 49

7(5) + 6 = 35 + 6 = 41

4 0
3 years ago
Solve : |1/5x - 7 | =4
Mnenie [13.5K]

Answer:

x = 55 or x = 15

Step-by-step explanation:

Solve Absolute Value.

We know that either 1/5x - 7 = 4 or 1/5x - 7 = -4.

1/5x - 7 = 4

1/5x - 7 + 7 = 4 + 7

1/5x = 11

1/5x (5) = 11 (5)

x = 55 (one possibility)

1/5x - 7 = -4

1/5x - 7 + 7 = -4 + 7

1/5x = 3

1/5x (5) = 3 (5)

x = 15 (second possibility)

6 0
3 years ago
If 5a+b=14 then a = what<br> explain how you got it pls
Trava [24]

Answer:

a = \frac{14 - b}{5}

Step-by-step explanation:

The rule to know and follow is:

You can add, subtract, multiply or divide by anything so long as the same thing is done to both sides of the equals sign;

5a + b = 14

If we want to get: "a = ...", then we use the rule to isolate the variable a on one side of the equation;

Firstly, we subtract b from both sides:

5a + b - b = 14 - b

5a = 14 - b

Then, divide both sides by 5:

\frac{5a}{5} = \frac{14 - b}{5} \\\\ a = \frac{14 - b}{5}

8 0
2 years ago
Use a graphing device to find all solutions of the equation, rounded to two decimal places. (enter your answers as a comma-separ
attashe74 [19]
The solutions are
  x = 0.01, 1.47

5 0
4 years ago
Translate the following:<br> "twice the sum of a number and three is eighteen"
Scorpion4ik [409]

Answer:

7.5

Step-by-step explanation:

how i figured it is 18-3 is 15

2*7 is 14 so in turn 7.5 *2 is 15 so

z=7.5

5 0
3 years ago
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