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Gala2k [10]
2 years ago
9

30 POINTS ! TRUE OR FALSE?

Mathematics
2 answers:
8_murik_8 [283]2 years ago
5 0

False, they're perpendicular

vovikov84 [41]2 years ago
5 0

Answer:

False

Step-by-step explanation:

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Please,,, i'm begging you... help me with this and explain how you got the answer... i .. really need someones help.
GalinKa [24]

A "function" is a black box, with a funnel on top, a little door on the  bottom, and a crank on the side.  The way it works is:  

-- You take a number, and call it 'x'.

-- You drop it into the funnel on top of the box, and you turn the crank.

-- Some gears, shafts, math operations and stuff inside the box do things to 'x', and eventually the little door on the bottom opens up and another number falls out.  

-- Before you even touch that one, you call it 'y', and then you pick it up and look at it.

The number that falls out is related somehow to 'x'.  It depends on 'x', AND on exactly what's inside the box ... how the gears and shafts and math operations are all hooked together.  All the guts and parts inside DETERMINE what the box will do to 'x', and how 'x' will get changed, and what will come out the bottom.

We call 'y' the FUNCTION of 'x'.

If you know exactly what's inside the box, then even before you drop 'x' into the funnel, you can always tell in advance WHAT will come out.

If you DON'T know what's inside, then the only way you can describe the function is to take a bunch of numbers, drop them into the function one at  a time, LOOK and SEE what comes out each time, and write it all down.

THAT's what this question is giving you.

What comes out is called the VALUE of the function for each 'x' that you drop in.  The table is giving you the VALUE of 'y' (the function) for seven different 'x's.  Then the question just wants you to look and see what falls out of the box when 'x' is -1 .

Look at the table.  It says that when 'x' is -1, 'y' is going to be <em>3 </em>.  That's the answer to the question.

We still don't know anything about what's inside the box.  We don't know the structure of the FUNCTION, and exactly what it does to 'x' to produce 'y'.  But we do know what'll fall out if we drop a -1 into the funnel ... because the table tells us !

Now, please get up off your knees.  It's unbecoming.  

7 0
3 years ago
Read 2 more answers
PLEASE HELP!!! 20 POINTS!!!! WILL MARK YOU BRAINIEST!!! Two isosceles triangles share the same base. Prove that the medians to t
katovenus [111]

Answer:

Given: Two Isosceles triangle ABC and Δ PBC having same base BC. AD is the median of Δ ABC and PD is the median of Δ PBC.

To prove: Point A,D,P are collinear.

Proof:

→Case 1.  When vertices A and P are opposite side of Base BC.

In Δ ABD and Δ ACD

AB= AC   [Given]

AD is common.

BD=DC  [median of a triangle divides the side in two equal parts]

Δ ABD ≅Δ ACD [SSS]

∠1=∠2 [CPCT].........................(1)

Similarly, Δ PBD ≅ Δ PCD [By SSS]

∠ 3 = ∠4 [CPCT].................(2)

But,  ∠1+∠2+ ∠ 3 + ∠4 =360° [At a point angle formed is 360°]

2 ∠2 + 2∠ 4=360° [using (1) and (2)]

∠2 + ∠ 4=180°

But ,∠2 and ∠ 4 forms a linear pair i.e Point D is common point of intersection of median AD and PD of ΔABC and ΔPBC respectively.

So, point A, D, P lies on a line.

CASE 2.

When ΔABC and ΔPBC lie on same side of Base BC.

In ΔPBD and ΔPCD

PB=PC[given]

PD is common.

BD =DC [Median of a triangle divides the side in two equal parts]

ΔPBD ≅ ΔPCD  [SSS]

∠PDB=∠PDC [CPCT]

Similarly, By proving ΔADB≅ΔADC we will get,  ∠ADB=∠ADC[CPCT]

As PD and AD are medians to same base BC of ΔPBC and ΔABC.

∴ P,A,D lie on a line i.e they are collinear.

6 0
2 years ago
A pool had 10 1/2 gallons of water in it Jake and his friend splashed g gallons of water out of the pool. There are 7 7/8 gallon
kolezko [41]

Answer: 6/625 gallons of water wa splashed out of the pool

Step-by-step explanation:

Total number of gallons of water in the pool was 10 1/2. Converting to improper fraction, it becomes

21/2 gallons.

Jake and his friend splashed g gallons of water out of the pool. There are 7 7/8 gallons still left in the pool. Converting 7 7/8 to improper fraction, it becomes

63/8 gallons

This means that

g + 63/8 = 21/2

g = 21/2 - 63/8 = (84 - 63)/8

g = 21/8 = 2.625 gallons

3 0
3 years ago
Which is the simplest radical form of √52?
Zielflug [23.3K]
Short answer: 2 * sqrt(13)
Remark
There are a number of ways to look at this. I'll pick the easiest.

Step one
Factor 52 until there are no more prime factors to be used.

52 = 2 * 26
52 = 2 * 2 * 13. That's as far as you can go.

Rule
For every 2 equal prime factors, 1 of them can be taken out side of the root sign. The other one disappears.

sqrt(52) = sqrt(2*2* 13) = 2*sqrt(13)

Answer 2sqrt(13) <<<< answer
4 0
2 years ago
locksmith larry charges $90 for a house cal plus $20 per hour. Locksmith Barry charges $50 for a house call plus $30 per house.
nadya68 [22]

Answer:

<u>4 hours</u>

Step-by-step explanation:

Equations :

Larry : <u>y = 20x + 90</u>

Barry : <u>y = 30x + 50</u>

Equate both to find the number of hours at which they both charge the same :

  • 20x + 90 = 30x + 50
  • 30x - 20x = 90 - 50
  • 10x = 40
  • x = <u>4 hours</u>
4 0
2 years ago
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