All categories

3 years ago

Work out angel xPlease could u help me with this ASAP thanks you

Mathematics

2 answers:

DochEvi [55]3 years ago

8 0

$= > \: x + 42 + 123 \: = 180 \\ = > x + 81 = 180 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ = > \: x = 180 - 81 = 99 \: \: \\ = > \: x \: = 99 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

Inessa [10]3 years ago

5 0

Angle ————————————————

You might be interested in

Classifying triangles

MArishka [77]

Answer:

What you are looking at is a scalene triangle!

Step-by-step explanation:

By definition scalene triangles are triangles where each side is a different length... hope this one helps you!

6 0

3 years ago

Read 2 more answers

Help pls just help i can't take this anymore

Romashka-Z-Leto [24]

It is C
Ksixkskxksmxmamlsldllxlallzlskmclaldlldle

4 0

2 years ago

Read 2 more answers

Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4

Alik [6]

Answer:

$\alpha=3$

Step-by-step explanation:

<u>Equation of a Circle</u>

A circle of radius r and centered on the point (h,k) can be expressed by the equation

$(x-h)^2+(y-k)^2=r^2$

We are given the equation of a circle as

$3x^2+3y^2-6\alpha x+12y-3\alpha=0$

Note we have corrected it by adding the square to the y. Simplify by 3

$x^2+y^2-2\alpha x+4y-\alpha=0$

Complete squares and rearrange:

$x^2-2\alpha x+y^2+4y=\alpha$

$x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4$

$(x-\alpha)^2+(y+2)^2=r^2$

We can see that, if r=4, then

$\alpha+\alpha^2+4=16$

Or, equivalently

$\alpha^2+\alpha-12=0$

There are two solutions for $\alpha$ :

$\alpha=-4,\ \alpha=3$

Keeping the positive solution, as required:

$\boxed{\alpha=3}$

8 0

3 years ago

Solve easy equation (for points) 8+x+15=20

Andru [333]

Answer:

x= -3

Step-by-step explanation:

You're Welcome :)

7 0

3 years ago

Value of peters house has risen 20% a year for the last three years. If the value of peters home three years ago was $120 thousa

notka56 [123]

Answer:

The value now = $207,360

Step-by-step explanation:

Rate of increase = 20% per year = 20/100 = 0.2 per year

value 3 years ago = $120,000

interest at year 1:

20% of 120,000

= 0.2 × 120,000 = 24,000

Value at the end of year 1

= initial value + interest

= 120,000 + 24,000 = $144,000

In year 2:

20% of 144,000

= 0.2 × 144,000 = 28,800

Value at the end of year 2:

144,000 + 28,800 = $172,800

In year 3

0.2 × 172,800 = 34,560

Value at the end of year 3:

34,560 + 172,800 = $207,360

8 0

3 years ago

Work out angel xPlease could u help me with this ASAP thanks you ​

Work out angel xPlease could u help me with this ASAP thanks you