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WARRIOR [948]
4 years ago
14

Really simple triangle question! please help!

Mathematics
1 answer:
OlgaM077 [116]4 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

Nicole has the correct equation

To find ∠ F use the Sine rule, that is

The ratio of the sine of an angle to the side opposite is equal to the ratio of the sine of another angle to the side opposite.

Matthew and Leah have mixed up the sine of an angle with the incorrect opposite side.

Following on with Nicole's solution

\frac{sin100}{27} = \frac{sinF}{19} ( cross- multiply )

27 × sinF = 19 × sin100° ( divide both sides by 27 )

sinF = \frac{19sin100}{27} ≈ 0.6930, thus

F = sin^{-1} (0.6930 ) ≈ 43.9° ( to 1 dec. place )

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natulia [17]

Answer:

I think you just plug in the first equation to the or the second to the first, it’s actually does not matter. After that you just solve it. For example: we have two equations.

y=11-2x

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We just plug in the first equation to the second one.

11-2x=x+2

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Step-by-step explanation:


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Read 2 more answers
-18.3 = b + -8.3<br> b =
Sauron [17]

Answer:

Here,

-18.3=b+ -8.3

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3 0
3 years ago
(05.02)
Amiraneli [1.4K]

Answer:

y = x + 1

Step-by-step explanation:

1) First, find the slope of the line between the two points. Whichever option has the same slope would be the right answer. To find this, use the slope formula \frac{y_2-y_1}{x_2-x_1}. x_1 and y_1 represent the x and y values of one point, and x_2 and y_2 represent the x and y values of another point.

So, use the points given to answer the question. Substitute 4 for x_1, 5 for y_1, 8 for x_2, and 9 for y_2 then solve:

\frac{(9)-(5)}{(8)-(4)} \\= \frac{9-5}{8-4} \\= \frac{4}{4} \\= 1

Therefore, the slope is 1.

2) Any line that is in a "y = a number" format is a horizontal line, and all horizontal lines have a slope of 0 - so the second option can't be the answer.

The rest of the options are in slope-intercept form, or y = mx + b format. Remember that the coefficient of the term with the x is the slope. Knowing this, y = x + 1 would need to be the answer since the coefficient of the term with the x is 1, and we already calculated that the slope is 1.

4 0
3 years ago
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