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3 years ago

Can anybody help me ?????????????????????? please geometry

Mathematics

2 answers:

AVprozaik [17]3 years ago

7 0

Where the angle bisectors intersect determines the center of the incircle.
Where the side perpendicular bisectors intersect determines the center of the center of the circumcircle. From these definitions, you should be able to determine the points you want.

Ulleksa [173]3 years ago

7 0

See, pls, the suggested explanation:
S - the centre of inscribed circle, P - the centre of circumscribed circle.
Details are in the attached picture: red lines for small circle (inscribed), green ones for large (circumscribed).

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(t+5)(t+2),make t the subject of the formula

lianna [129]

Answer:

t= 2p+5/p-1

Step-by-step explanation:

The question is not well writen

Assume p = t+5/t-2

We are to make t the subject of the formula

Cross multiply

p(t-2) = t+5

pt - 2p = t+5

pt - t = 2p+5

t(p-1) = 2p+5

t= 2p+5/p-1

Hence the value of t is 2p+5/p-1

5 0

3 years ago

If r1 and r2 are the roots of the quadratic equation ax+bx+c=0 show that r1+r2=-b/and r1r2=c/a

velikii [3]

$x_{1,2} = \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}$

is the formula for calculating x1 and x2

To prove x1 + x2 = -b/a all we need to do is to express x1 and x2 from equation above

once we do we will get -2b/2a which is equal to -b/a because square root part will negate each other. one has + sign in front and other - sign

Showing that x1x2 = c/a goes similar way.
the numerator parts is actually difference of squares. after that we will have:
-b^2 -b^2 + 4ac = 4ac

in denominator we have 2a*2a = 4a^2
4ac/4aa = c/a

4 0

3 years ago

15 a2 - 6ab- 8 a2+ 20 - 5ab - 31 + a2- ab

Ivanshal [37]

Step-by-step explanation:

Remove the parentheses: 15a²-6ab+8a²+20+5ab-31+a²-ab Combine like terms: 24a²-2ab-11

Answer: 24a²-2ab-11

4 0

3 years ago

Read 2 more answers

olivia works 4 hours more each week then her coworker lily. olivia works a total of 32 hours every 2 weeks. how many hours each

Veseljchak [2.6K]

Answer:

12 hours

Step-by-step explanation:

Let the number of hours Lily works each week be x.

This implies that of Olivia's is

x+4.

We were also told that for every two weeks, Olivia works a total of 32 hours.

This implies that

2(x+4)=32

We divide through by 2

$\implies \frac{2(x + 4)}{2} = \frac{32}{2}$

$\implies x+ 4 = 16$

We subtract 4 from both sides

$\implies x+ 4- 4= 16 - 4$

$\implies x=12$

Hence Lily works 12 hours each week.

6 0

3 years ago

Write a scenario that could work for the following line of best fit y= x + 1 explain the slope and Intercept in this context

puteri [66]

A kid has $1 and he receives $1 everyday after doing his homework. So the initial money that he has is the y-intercept and the money that he receives everyday is the slope.

Hope this helps :)

6 0

4 years ago