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3 years ago

PLEASE HURRY! ^^

Mathematics

2 answers:

GarryVolchara [31]3 years ago

6 0

Answer: 3 and -3

Your welcome

Oduvanchick [21]3 years ago

5 0

Answer:

3 and -3

Step-by-step explanation:

Absolute value means take the non negative value

|2| and |-2| = 2

|1| and| -1| = 1

|3| and| -3| = 3

|5| and |-5| = 5

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Please help me asap with this questioln plz

makkiz [27]

Answer:

<h2><em>i think it is b</em></h2><h2><em></em></h2><h2><em>Step-by-step explanation: i tryed to divide it using algebra then i got those numbers basically finding square root</em></h2>

3 0

3 years ago

Read 2 more answers

Find a degree 3 polynomial P such that P(−1) = −3, P(0) =−2, P(1) = −1, and P(2) = 6.

Aleksandr-060686 [28]

Answer:

Step-by-step explanation:

let polynomial P(x)=ax³+bx²+cx+d

-3=-a+b-c+d

-2=d

-1=a+b+c+d

-1=a+b+c-2

a+b+c=1

-3=-a+b-c-2

a-b+c=1

a+b+c-(a-b+c)=1-1=0

2b=0

b=0

so a+c=1

6=8a+4b+2c+d

6=8a+4b+2c-2

8a+4b+2c=8

4a+2b+c=4

or 4a+0+c=4

4a+c=4

a+c=1

subtract

3a=3

a=1

1+c=1

c=0

reqd .P(x)=1x³-2=x³-2

6 0

3 years ago

An observer at the top of a tower of height 20m sees a man due East of him at an angle of depression of 27°. He sees another man

kotegsom [21]

Answer:

52.35 m

Step-by-step explanation:

<em>Refer to picture.</em>

Let the distance to men are x and y and the distance between them is d.

The angle of depreciation is 27° and 30°, hence top angle of the triangle is 63° or 60°.

<u>Find the distance from the tower to men:</u>

x = 20 tan 63° = 39.25 m
y = 20 tan 60° = 34.64 m

<u>The distance between men is:</u>

d = $\sqrt{x^2+y^2} =\sqrt{39.25^2+34.64^2} = 52.35m$

<em>Note, all numbers are rounded</em>

8 0

3 years ago

I need the answers to questions 1&2

Leokris [45]

Answer:

see explanation

Step-by-step explanation:

(1)

the sine of an angle = $\frac{opposite}{hypotenuse}$

(a)

here the opposite is 12 and the hypotenuse is 13

12 is the side opposite ∠DEF ← required angle

(b)

the tangent of an angle = $\frac{opposite}{adjacent}$

here the opposite is 5 and the adjacent is 12

∠DFE ← required angle

(2)

to calculate AB use Pythagoras' identity in the right triangle

AB² = 2² + 3² = 4 + 9 = 13, hence

AB = $\sqrt{13}$ ≈ 3.6 ( to nearest tenth )

tanB = $\frac{2}{3}$ ⇒ B = 33.7°

tanA = $\frac{3}{2}$ ⇒ A = 56.3°

5 0

3 years ago

I NEED HELP NOW ON PROBABILITY PART 1!!!!!

miv72 [106K]

Principle: divide the correct possibilities by the total nr. of possibilities to find the probability.

6. P(green) = 5 / (7+5+6) = 5/18
7. P(red) = 6 / 18 = 1/3
8. P(not green) = P(red | blue) = (6+7)/18 = 13/18

9. P(HH) = 5/25 = 1/5
10. P(HT) = 16/25
11. P(NOT TT) = P(HH | HT) = (5+16)/25 = 21/25
12. P(HH | TT) = (5+4)/25 = 9/25

13. P(5) = 1/6. P(H) = 1/2. P(5 & H) = 1/6*1/2 = 1/12. If you draw all the possibilities, you'll find there are 12. One of them is 5 & Heads.

5 0

4 years ago