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3 years ago

If y = -12 when x = 9, find y when x= -4.

Mathematics

1 answer:

Masja [62]3 years ago

6 0

Answer:

16/3

Step-by-step explanation:

The relationship between x and y is y=-4/3 x

So, when x = -4, y= -4/3(-4), or 16/3

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M is the incenter of triangle ABC. Find the lengths of MD and DC. (Look at pic)

Deffense [45]

Answer:

Part 1) $MD=9\ units$

Part 2) $DC=12\ units$

Step-by-step explanation:

Step 1

Find the length of MD

we know that

The incenter is the intersection of the angle bisectors of the three vertices of the triangle. Is the point forming the origin of a circle inscribed inside the triangle

In this problem

$MD=ME=MF$ ------> is the radius of a circle inscribed inside the triangle

we have that

$MF=9\ units$

therefore

$ME=9\ units$

$MD=9\ units$

Step 2

Find the length of DC

we know that

In the right triangle MDC

Applying the Pythagoras theorem

$MC^{2} =MD^{2}+DC^{2}$

we have

$MD=9\ units$

$MC=15\ units$

substitute

$15^{2} =9^{2}+DC^{2}$

$DC^{2}=225-81$

$DC=\sqrt{144}\ units$

$DC=12\ units$

6 0

4 years ago

A. GIVE AN EXAMPLE OF THE FOLLOWING AROUND YOUR HOME POINTS 1. 2. 3. 4. LINE /RAY/SEGMENT 5. 6. 7. 8. PLANE 9. 10.

pickupchik [31]

Sorry but I’m lost what are you talking about

5 0

3 years ago

I need help with both of them please

kaheart [24]

5. it is A..............

3 0

3 years ago

Read 2 more answers

Can somebody please help with these questions. i really need help :)

alekssr [168]

Answer:

Step-by-step explanation:

a- no u don't need to know

b- 38.7m-3.9m=34.8m

c-3.48+3.9= 38.7

7 0

4 years ago

Solve help please, thanks.

natka813 [3]

Answer:

2 √2 would be your answer.

Step-by-step explanation:

= √8y/√y

Both roots will be cancelled out,

= 8y/y

= 8

Factorising 8, we get

= 2√2

hope it helps!

3 0

3 years ago

Read 2 more answers