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3 years ago

Please help me!!!!!!!!!

Mathematics

2 answers:

Vlad [161]3 years ago

3 0

Answer:

57 degree

Step-by-step explanation:

Using cos formula again~

So AB^2=BC^2+AC^2-2*BC*AC*cosC

AB= 25.15cm

BC^2=AB^2+AC^2-2ABACcosA

Cos A=0.55

A=56.58degree

Brut [27]3 years ago

3 0

C is the Answer to Your question

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Please help me out. I don’t understand this problem.. An equation of a line through (-7,-10) which is perpendicular to the line

nordsb [41]

Answer:

The Equation:

$y = \frac{1}{3}x - \frac{23}{3}$

The y-intercept:

$-\frac{23}{3}$

Step-by-step explanation:

Things you need to know:

Perpendicular mean opposite slope.

Need to know point slope form of a linear equation $y - y_1 = x(x - x_1)$

Ok, with that out the way, lets get started!

From the equation y = -3x + 2 we can see the slope, which is -3. We are asked to find an equation that is perpendicular to that slope so that means we need an opposite slope. To turn this slope to an opposite slope flip it and change the sign

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

Now that we have our opposite slope, which is $\frac{1}{3}$ , we can find the equation the problem is asking us to solve.

We do this by using the point (-7, -10) and our new slope, which is $\frac{1}{3}$ and by using $y - y_1 = x(x - x_1)$

Insert our point and slope into $y - y_1 = x(x - x_1)$ and solve for y

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

$y - (-10) = \frac{1}{3}(x - (-7))$

$y + 10) = \frac{1}{3}(x + 7))$

Work on the right side of the = sign

Distribute 1/3 to x and 7

$y + 10 = \frac{1}{3}(x + 7))$

$y + 10 = \frac{1}{3}x + \frac{7}{3}$

Bring the 10 over to the right side by adding a -10

$y + 10 -10= \frac{1}{3}x + \frac{7}{3} - 10$

$y = \frac{1}{3}x + \frac{7}{3} - 10$

Do the math for $\frac{7}{3} - 10 = -\frac{23}{3}$

$y = \frac{1}{3}x - \frac{23}{3}$

We are done.

The Equation:

$y = \frac{1}{3}x - \frac{23}{3}$

The y-intercept:

$-\frac{23}{3}$

7 0

3 years ago

Put in order least to greatest , 9/10 5/25 49/50 6/100

blondinia [14]

I’m screwin yo girl n whoopin yo son

6 0

3 years ago

Read 2 more answers

What is the area of the following figure:

xenn [34]

Answer:

180cm^2

Step-by-step explanation:

split it into 2 different triangles one is 24 x 4 and the other is 24 x 11 then add them together

24 x 4 is 96/2 is 48

24 x 11 is 264/2 is 132

add 48 + 132 to get an answer of 180 cm^2

if anything doesnt seem right just comment and i will try and figure out what has gone wrong

hope this helps :)

4 0

3 years ago

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OleMash [197]

Answer:

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y-axis: (0,12)

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3 years ago

What is a ordered pair of numbers that identify a point on a coordinate plane

Paraphin [41]

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6 0

2 years ago