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natita [175]
3 years ago
7

Help please I have a test tomorrow!!!!

Mathematics
1 answer:
Taya2010 [7]3 years ago
6 0
For find f(-2) of f(x)=7x+3, plug in -2 for x.
7(-2)+3=y
-14+3=y
y=-11
To find the rate, or the slope, you divide x/y. So 2/6 is 1/3. 3 over 9 is also 1/3. So the rate is 1/3. In rates you always divide, you don't mulitply or subtract  or add to find the rate. 
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MatroZZZ [7]

what are you asking im confused

3 0
3 years ago
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How do I solve this word problem?
german

Answer:

  • 280 student tickets
  • 520 adult tickets

Step-by-step explanation:

You may recognize that you are given two relationships between two unknowns. You can write equations for that.

You are asked for numbers of adult tickets and of student tickets. It often works well to let the values you're asked for be represented by variables. We can choose "a" for the number of adult tickets, and "s" for the number of student tickets. Then the problem statement tells us the relationships ...

  a + s = 800 . . . . . . 800 tickets were sold

  12.50a + 7.50s = 8600 . . . . . . . revenue from sales was 8600

(You are supposed to know that the revenue from selling "a" adult tickets is found by multiplying the ticket price by the number of tickets: 12.50a.)

___

You can solve these two equations any number of ways. One way is to do it by <em>elimination</em>. We can multiply the first equation by 12.50 and subtract the second equation:

  12.50(a +s) -(12.50a +7.50s) = 12.50(800) -(8600)

  5s = 1400 . . . . simplify. (The "a" variable has been eliminated.)

  s = 280 . . . . . . divide by 5

Then the number of adult tickets can be found from the first equation:

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280 student tickets and 520 adult tickets were sold.

8 0
4 years ago
Who isthe father of geometry
Yuliya22 [10]
Euclid (Euclid of Alexanderia)
7 0
4 years ago
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Please helpppppp!!!!!!!!!
g100num [7]

Answer:

64w^2

Step-by-step explanation:

Because 8w is in parentheses, you must apply the exponent to both the 8 and w.

So, it becomes (8*8)(x*x) which equals (64)(x^2).

Which then gives you your final answer, 64x^2.

7 0
3 years ago
A partitioned pen is constructed with a total 168 feet of fencing. If the perimeter measures 138 feet, then find the dimensions
riadik2000 [5.3K]

Answer:

6512349569

Step-by-step explanation:

I think it's correct

5 0
3 years ago
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