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zvonat [6]
3 years ago
10

CALLING EXPERTS!!! PLEASE HELP

Mathematics
2 answers:
disa [49]3 years ago
6 0
The circle is open if the inequality is greater than (>) or less than (<) and closed if the inequality is greater than or equal to (≥) or less than or equal to (≤)
If the arrow points to the right (—>) towards bigger numbers, x (whatever number is on the line) will be GREATER (> or ≥)
If the arrow o points to the left (<—) towards smaller numbers, x will be LESSER (< or ≤)

1. Starts at -2 with a closed circle and goes in the positive direction —>
So x ≥ -2
2. Starts at 2 with an open circle and goes in the negative direction <—
So x<2

And the rest use the same method.
mestny [16]3 years ago
6 0

Answer:

Green answers in order of 1-7 as green appears

Just show the ones at start of each answer in bold

1)  x  ≥ -2    closed circle start   opp/s   x ≤ 0  closed circle stop

2) x < -2    open circle stops    opp/s   x ≥ 0  closed circle start

3) x > 2      open circle starts    opp/s   x ≤ 0  closed circle stops

4) x ≤ 2     closed circle stops  opp/s   x ≥ 0 closed circle starts

5) x < 2        open circle stops   opp/s  x ≥-6  closed circle starts  

6) x > 2      open circle starts   opp/s   x ≤ 6  closed circle stops  

7)  x < -2     open circle stops   opp/s   x ≥ -6  closed circle starts  

Step-by-step explanation:

Rule 1   closed circle is   ≥  right   open circle shows > right

Rule 2  closed circle is   ≤ left   open circle shows < left

Rule 3  with inequalities on line   x > 2 means it starts from this value and moves right.

Rule 4 with inequalities on line  x < 2 means it ends in this value.

Rule 5   Remember rule 3 and rule 4  for direction start and stop

remember rule 1+ rule 2 for choice of closed circle etc.

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A snowboarder is going down a mountain at a rate of 2000 feet per 20 minutes. At this rate how many feet will he have traveled a
Rudik [331]

Answer: 24,000 feet

Step-by-step explanation:

Well there is 60 minutes in an hour. So every 60 minutes you add by 6000

and 6000 x 4= 2400

:)

5 0
3 years ago
Consider the differential equationy′′+3y′−10y=0.(a) Find the general solution to this differential equation.(b) Now solve the in
RSB [31]

Answer:

Y= 2e^(5t)

Step-by-step explanation:

Taking Laplace of the given differential equation:

s^2+3s-10=0

s^2+5s-2s-10=0

s(s+5)-2(s+5) =0

(s-2) (s+5) =0

s=2, s=-5

Hence, the general solution will be:

Y=Ae^(-2t)+ Be^(5t)………………………………(D)

Put t = 0 in equation (D)

Y (0) =A+B

2 =A+B……………………………………… (i)

Now take derivative of (D) with respect to "t", we get:

Y=-2Ae^(-2t)+5Be^(5t)   ....................... (E)

Put t = 0 in equation (E) we get:

Y’ (0) = -2A+5B

10  = -2A+5B ……………………………………(ii)

2(i) + (ii) =>

2A+2B=4 .....................(iii)

-2A+5B=10 .................(iv)

Solving (iii) and (iv)

7B=14

B=2

Now put B=2 in (i)

A=2-2

A=0

By putting the values of A and B in equation (D)

Y= 2e^(5t)

6 0
3 years ago
M + 5 = 5<br> + 5 can you guys help
sattari [20]

Answer:

the answer would be 0 because 0+5=5

7 0
3 years ago
What variable do we use for slope? A.x B.y C.m D.b
Nady [450]

Answer:

y we use y

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A square pool has a side length of x feet. a uniform border around the pool is 1 foot wide. the total area of the pool and the b
Alex73 [517]
----------------------------------------
Define x:
----------------------------------------
Let x be the length of the pool.

Length of the pool and its border = x + 1 + 1
Length of the pool and its border = x + 2

----------------------------------------
Given area = 361 ft², find x:
----------------------------------------
(x+2)² = 361
x+ 2 = √361
x + 2 = 19
x = 19 - 2
x = 17

----------------------------------------
Find Length of the pool:
----------------------------------------
Length of the pool = x = 17 feet

----------------------------------------
Find Area of the pool:
----------------------------------------
Area = 17 x 17 
Area = 289 ft²

------------------------------------------------------------
Answer: Area of the pool = 289 ft²
------------------------------------------------------------

5 0
3 years ago
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