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VladimirAG [237]
2 years ago
11

How do you even do this?! i’m so confused

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
7 0

Answer:

D.

Step-by-step explanation:

Pretend the y-axis is a wall, on the left side it is decreasing and on the right it is increasing, so A. and B. aren't correct. C. and D. are left, x<0 means on the left side of the y-axis because x (any number) is less than 0 and on the left side it is decreasing so C. isn't correct so D. is your answer because x>0 means x is greater than 0 so it's on the left side of the y-axis.

I hope this helps!

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A technology company produces two types of calculators.
lubasha [3.4K]

10 ≤ x ≤ 30, x < 2y, x < 40.

Solution:

Given x is the number of graphing calculators produced daily and

y is the number of scientific calculators produced daily.

Step 1: A company produce atleast 10 and not more than 30 graphing calculators per day.

⇒ 10 ≤ x < 30

Step 2: Each day, the number of graphing calculators cannot exceed twice the number of scientific calculators produced.

⇒ x < 2y

Step 3: The number of scientific calculators cannot exceed 40 per day.

⇒ x < 40

Hence, the constraints are 10 ≤ x ≤ 30, x < 2y, x < 40.

7 0
3 years ago
Find the solution of the recurrence relation an = 3an−1 −3an−2 +an−3 if a0 = 2, a1 = 2, and a2 = 4.
Shkiper50 [21]

Using the recurrence relation, we can find a couple more values in the sequence:

  • a3 = 3a2 -3a1 +a0 = 3(4) -3(2) +2 = 8
  • a4 = 3a3 -3a2 +a1 = 3(8) -3(4) +2 = 14

First differences are 0, 2, 4, 6, ...

Second differences are constant at 2, so the function is quadratic.

The sequence can be described by the quadratic ...

... an = n² -n +2

_____

We know the value for n=0 is 2, so we can find <em>a</em> and <em>b</em> using the given values for a1 and a2.

... an = an² +bn +2

... a1 = 2 = a·1² +b·1 +2 . . . . for n=1

... a + b = 0

... a2 = 4 = a·2² -a·2 +2 . . . . for n = 2; using b=-a from the previous equation

... 2 = 2a

... a = 1 . . . . so b = -1

5 0
3 years ago
Hi guys can l ask...... A BABY IS 3WEEKS AND 4 DAYS OLD. WHAT IS THE AGE OF THE BABY IN DAYS​
makkiz [27]

Answer:

25 days old

Step-by-step explanation:

7 days = 1 week

3 x 7 = 21

21 + 4 = 25

25 days old

3 0
3 years ago
Read 2 more answers
Solve forj j - 263 = 243 ​
joja [24]
J = 506

J needs to be isolated so add 263 to both sides. -263 is cancelled out and 263 + 243 is 506.
Hence the answer of 506
3 0
2 years ago
Read 2 more answers
Please help me :'( I have been stuck on this
madam [21]

This is really weird.

-- NONE of the situations matches the equation at the top. 

-- And the equation at the top isn't even really any big deal . . .
it's <em>always</em> true, no matter what  ' t '  is .  If you remove all of
the parentheses and simplify it, it says that  6 = 6.  Well duh !

 
5 0
3 years ago
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