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4 years ago

Solve for AB using the Pythagorean theorem

Mathematics

1 answer:

olga_2 [115]4 years ago

7 0

Answer:

The answer is 6.1

Step-by-step explanation:

4^2 + 4.6^2 = c^2

16 + 21.16 = c^2

37.16 = c^2

sqrt37.16 = sqrtc^2

6.1 = c

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point A is at (-5,-4) and point M is at (0,-3.5).Point M is the midpoint of point A and point Bwhat are the coordinates of point

velikii [3]

Answer:

point b is at 5,-3

you have to go 5 past and .5 up

6 0

3 years ago

A bridge in the shape of an arch connects two cities separated by a river. The two ends of the bridge are located at (–7, –13) a

sdas [7]

Answer:

$y=-\dfrac{13}{49}x^2$

Step-by-step explanation:

The shape of an arch corresponds to a parabola.

the general equation for a parabola is:

$y=ax^2+bx+c$

we're given three coordinates: (-7,-13),(7,-13) and (0,0)

so we can plug these values in the general equation to make 3 separate equations:

(x,y) = (-7,-13)

$-13=a(-7)^2+b(-7)+c$

$49a-7b+c=-13$

(x,y) = (7,-13)

$-13=a(7)^2+b(7)+c$

$49a+7b+c=-13$

(x,y) = (0,0)

$0=a(0)^2+b(7)+c$

$c=0$

so we have three equations. and we can solve them simultaneously to find the values of a,b, and c.

we've already found c = 0, let's use substitute it to other equations.

$49a-7b+c=-13\quad\Rightarrow\quad49a-7b=-13$

$49a+7b+c=-13\quad\Rightarrow\quad49a+7b=-13$

we can solve these two equation using the elimination method, by simply adding the two equations

$\quad\quad49a-7b=-13\\+\quad49a+7b=-13$

------------------------------

$\quad\quad 98a=-26$

$\quad\quad a=-\dfrac{13}{49}$

Now we can plug this value of a in any of the two equations.

$49a-7b=-13$

$49\left(-\dfrac{13}{49}\right)-7b=-13$

$-13-7b=-13$

$-7b=0$

$b=0$

We have the values of a,b, and c. We can plug them in the general equation to find the equation of the arch.

$y=\left(-\dfrac{13}{49}\right)x^2+0x+0$

$y=-\dfrac{13}{49}x^2$

$49y=-13x^2$

This our equation of the arch!

5 0

3 years ago

What percent tip did the customer leave If he spent $24 on $12 meal?

kifflom [539]

Answer:

he gave them 12 extra

Step-by-step explanation:

12-24 is 12

3 0

3 years ago

Pls help.................

Crank

The correct answer is u multiple it by 5 then u move it directions

7 0

3 years ago

Read 2 more answers

What are the range and domain?

Goryan [66]

Answer:

domain=0

range=2

Step-by-step explanation:

this might be helpful..

7 0

4 years ago