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BartSMP [9]
3 years ago
15

Solve using elimination x-y= 2x+y=-3

Mathematics
1 answer:
Zigmanuir [339]3 years ago
5 0
Your answer would be (.5,-2,5)
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Use this definition to find l'(a) at the given number a.<br> f(x) = ✓ 3x + 1,<br> a = 8
yanalaym [24]
F(x)= √3x + 1
a=8

8 √3 + 1 <—Exact form

14.85649646 <—In decimal form



5 0
3 years ago
The percent of working students increased 8.1 to 40.5 what was the present prior to increase
Dmitrij [34]

Answer:

  32.4

Step-by-step explanation:

prior + 8.1 = 40.5 . . . . . . seems to model the problem statement

prior = 32.4 . . . . . . . subtract 8.1 from both sides

Prior to the increase the percent was 32.4.

_____

<em>Comment on the problem statement</em>

When you're talking about a percentage increase in a percentage, it is almost never clear whether you're talking about the percentage of the underlying number, or the percentage of the percentage.

Here, we assume the 8.1 is a percentage of working students, not a percentage of the percentage of workings students. If you actually intend the latter, the percentage before the increase was about 37.465%.

6 0
3 years ago
*URGENT* I NEED HELP WITH THIS QUICK
Georgia [21]
The function:
f ( x ) = x * 0.965^t
where x is the initial amount and t is the number of the years
80 = x * 0.965^3
80 = x * 0.89632
x = 80 : 0.89632 ≈ 89
Answer:
The initial amount of animals was 89.

Hope this helps!
Have a nice day :)
4 0
3 years ago
Backpack is normally $64.99, put on sale it is marked down to $45.49 what percent off is the sale price
pogonyaev

Answer:

The percent off on the sale price is 30%.

Step-by-step explanation:

Marked up price = $64.99

marked down Price = $45.49

Let us assume the off percentage = k%

Now, the Amount off on the sale = Marked up price - Marked down price

                                                        = $64.99 -  $45.49  = $19.5

⇒  k% off on Marked up Price  $64.99 = $19.5

or, \frac{k}{100}  \times 64.99  = 19.5\\\implies k = \frac{19.5 \times 100}{64.99}  = 30

or, k = 30%

Hence, the percent off on the sale price is 30%

8 0
3 years ago
Sam is using the expression M/8n in class. What is the value of this expression when m = 4 and n = 1/2
vichka [17]

Answer:

1

Step-by-step explanation:

m/8n > 4/8(1/2) ( since its 1/2 all you need to do is change the fraction to whole number which is 1/2 = 0.5)

The given will become 4/4 then simplest form is 1

4 0
2 years ago
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