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Elza [17]
2 years ago
14

CAN SOMEONE HELP ME

Mathematics
1 answer:
andre [41]2 years ago
4 0

Answer:

a ≈ 4.9

Step-by-step explanation:

using the Cosine Rule in Δ ABC

a² = b² + c² - (2bc cosA )

   = 16² + 18² - (2 × 16 × 18 × cos15° )

   = 256 + 324 - (576cos15° )

   = 580 - 576cos15

   = 23.6267 ( take square root of both sides )

a = \sqrt{23.6267}

   ≈ 4.9 ( to the nearest tenth )

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Help me with this question, please
anzhelika [568]

Answer:

Part 1: [ -4 = -8 ]

Part 2: Inconsistent

Step-by-step explanation:

<u>Part 1</u>

1. Move all terms that don't contain x to the right side:

3x - 6y+6y = -12+6y

= 3x = -12 + 6y

2. Isolate x:

\frac{3x}{3} = \frac{-12+6y}{3}

x = -4 + 2y

3. Substitute the new expression into the original:

-4 + 2y - 2y = -8

4. Simplify:

-4 + 0 = -8

[ -4 = -8 ]

<u>Part 2</u>

The two solutions are not equal in value, so, we can conclude that the system of equations has no solution, or is inconsistent.

hope this helps!

7 0
2 years ago
Which of the following points can be found on the line y=2x - 7 *
Ne4ueva [31]

Answer:

Graph y=2x-7. Use the slope-intercept form to find the slope ... where is the slope and is the y-intercept. Find the values of and using the form . The slope of the line is the value of , and the y-intercept is the ... y-intercept: Any line can be graphed using two points. Select two values, and plug them into the equation to

Step-by-step explanation:

6 0
3 years ago
What is an equation of the line that passes through the points (0,-5) and (-6,0)?
charle [14.2K]

Answer:

y=-5/6x-5

Step-by-step explanation:

0-(-5)/-6-0

-5/6 slope

y-(-5)=-5/6(x-0)

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8 0
3 years ago
Please help me please
irina1246 [14]

Answer:

The answer is Parson's Market.

Step-by-step explanation:

First you want to find out how much one pound costs.

For Parson's you take 11.34 and divide it by 6.

11.34 / 6 = 1.89

Then you take how many pounds you are trying to get (7) and multiply it by the price per pound (1.89)

7  * 1.89 = 13.23

3 0
3 years ago
Suppose the half-life of a certain radioactive substance is 12 days. Find the time when there will be 20% of the initial substan
vazorg [7]

Answer: 2.4% I think

12 x 20 / 100 = 2.4%

7 0
3 years ago
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