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3 years ago

I need to find cos x please

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

7 0

Answer: 77.32

Step-by-step explanation:

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X²-x-30 Factored form of each expression

Kaylis [27]

Answer is (x - 6)(x + 5)
x -6 = 0
x = 6
x + 5 = 0
x = -5
{-5, 6}

4 0

3 years ago

In a college of 400 students, 45% are girls. Of the boys, 30% are football

Mashcka [7]

Of 400 students
No of girls = 0.45 x 400= 180
No of Boys = 400-180=220
Of the. No of boys 30% are football players =0.30 x 220 = 66

5 0

3 years ago

line m contains the points -3,4 and 1,0. write the equation of a line that would be perpendicular to this one and pass through t

castortr0y [4]

The equation of line perpendicular to line containing points (-3, 4) and (1, 0) and passes through (-2, 6) in point slope form is y = x + 8

<h3>Solution:</h3>

Given that line m contains points (-3, 4) and (1, 0)

We are asked to find the equation of line perpendicular to line containing points (-3, 4) and (1, 0) and passes through (-2, 6)

Let us first find slope of the line "m"

Given two points are (-3, 4) and (1, 0)

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

$\left(x_{1}, y_{1}\right)=(-3,4) \text { and }\left(x_{2}, y_{2}\right)=(1,0)$

$m=\frac{0-4}{1-(-3)}=-1$

Thus slope of line m is -1

We know that product of slope of given line and perpendicular line are always -1

So, we get

$\begin{array}{l}{\text { slope of line } m \times \text { slope of perpendicular line }=-1} \\\\ {-1 \times \text { slope of perpendicular line }=-1} \\\\ {\text { slope of perpendicular line }=1}\end{array}$

So we have got the slope of perpendicular line is 1 and it passes through (-2, 6)

Let us use the point slope form to find the required equation

The point slope form is given as:

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

$(x_1, y_1) = (-2, 6)$ and m = 1

y - 6 = 1(x - (-2))

y - 6 = x + 2

y = x + 8

Thus equation of required line in point slope form is y = x + 8

7 0

3 years ago

If N(k) is the inverse of K(n) and N(12)=4 then K(4)=12 True or false ?

viva [34]

Answer: True is the answer

3 0

3 years ago

Read 2 more answers

If the area of a rectangle is 42 what is the perimeter?

mihalych1998 [28]

Answer:

110 is the answer

hope this helps

have a good day :)

Step-by-step explanation:

7 0

3 years ago