All categories

2 years ago

Look at triangle ABC. What is the length of side AB of the triangle? Image down below :)

Mathematics

2 answers:

adoni [48]2 years ago

7 0

The answer is the third option.

12345 [234]2 years ago

3 0

Answer:

$\sqrt{18}$

Step-by-step explanation:

you need to use Pythagoras theorem

$a^{2}$ + $b^{2}$ = $c^{2}$

c is the hypotenuse. the longest side (ab)

a and b are the other two side lengths squared (bc,ca)

the length of both a and b are 3 squares long

$3^{2}$ is 9

you add the square of both sides together to get 18 this is $c^{2}$

you need to square root that to get the answer

$\sqrt{18}$

You might be interested in

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

What is the correlation coefficient for the data shown in the table? 0 1 4 5

SOVA2 [1]

we know that

The correlation coefficient is a number between -1 and +1 that represent the linear dependence of two variables or sets of data

Using the function CORREL in a excel tool, calculate the correlation coefficient (r)

see the attached table

the correlation coefficient for the data in the table is equal to 1

therefore

the answer is

r=1

4 0

2 years ago

Read 2 more answers

Help a girl out with geometry

Darya [45]

Follow the steps

106=x+79+x+45
106=2x+124
-124= -124
-18=2x
( -18)/2=(2x)/2 <----- solving for x
-9=x

then
angle LMF= -9+79
=70

angle FMN= -9+45
= 36
(when you add 70 and 36 together you get 106 which is the measurement of angle LMN or in other word the whole thing)

In conclusion the answer to the problem is:
Angle LMF is equal to 70.

7 0

3 years ago

If x = 3 and Y = 5 work out the value of 2x squared + 3 Y squared

miskamm [114]

Answer:

Step-by-step explanation:

x = 3

y = 5

2x^2 + 3y^2 = 2 × 3^2 + 3 × 5^2

= 2 × 9 + 3 × 25

= 18 + 75

= 93

Hope this helps

plz mark as brainliest!!!!

4 0

2 years ago

Read 2 more answers

Select the correct answer.

sleet_krkn [62]

Answer: Factors are the numbers and/or variables between your transactions (division, multiplication, addition, and subtraction signs). So the answer would be x2, 16x, and 64.

Step-by-step explanation:

You welcome

Can I get brainliest when sun else answers?

6 0

3 years ago