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3 years ago

Find the missing side or angle round to the nearest tenth b=15 a=30 c=29 A=[?]°

Mathematics

1 answer:

pogonyaev3 years ago

6 0

Answer:

71.6056

Step-by-step explanation:

c² = a² + b² - 2abcosC°

29² = 30² + 15² - 2(30)(15)cosC°

841 = 900 + 225 - 900cosC°

-59 = 225 - 900cosC°

-284 = -900cosC°

71/225 = cosC°

cos⁻¹(71/225) = C°

C° = 71.6056

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Tell whether the ordered pair is a solution to the system of linear equations. 1 point

zloy xaker [14]

Answer:

Yes

(-4,-2) is a solution of a given system of equation

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the equation

y = 2 x + 6 ..(i)

Given point (-4,-2)

substitute x =-4 and y = -2 in equation (i)

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3 years ago

A line passes through the points one, four and three, -4 which is the equation of the line

gavmur [86]

ANSWER

$y = - 4x + 8$

EXPLANATION

The given line passes through (1,4) and (3,-4).

The slope of this line is calculated using the formula:

$m =\frac{y_2-y_1}{x_2-x_1}$

We substitute the points into the slope formula to get:

$m = \frac{ - 4 - 4}{3 - 1}$

$\implies \: m = \frac{ - 8}{2}$

$m = - 4$

We substitute the first point and slope into the point-slope formula

$y-y_1=m(x-x_1)$

This implies that

$y - 4 = - 4(x - 1)$

We expand to get

$y - 4 = - 4x + 4$

$y = - 4x + 2/4+ 4$

$y = - 4x + 8$

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3 years ago

Round to the nearest whole number 2.09

Wewaii [24]

Answer:

the answer is 2

Step-by-step explanation:

this is because when you round 2.09 to the nearest whole number it is 2

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4 years ago