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photoshop1234 [79]
3 years ago
15

If x=1 and y=2, what is the value of the expression 2x^2-3xy

Mathematics
1 answer:
hjlf3 years ago
7 0
2x² - 3xy
2(1)² - 3(1)(2)
2(1) - 3(2)
2 - 6
-4
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In still water, a boat averages 12 miles per hour. It takes the same amount of time to travel 14 miles downstream, with the curr
anyanavicka [17]
T is equal in both situations ... d = r X t   so d/r = t
c is rate of waters current

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14(12 - c) = 7(12 + c)
2(12 - c) = 12 + c
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8 0
3 years ago
Which function has the greater rate of change?
Gnoma [55]

Answer:

Function 1

Step-by-step explanation:

<u>Function 1:</u>

y=\dfrac{5}{6}x+10

The rate of change of the function 1 is:

\dfrac{5}{6}\approx 0.83

<u>Function 2:</u>

The rate of change of the function 2 is:

\dfrac{15.75-14.25}{1-(1)}=\dfrac{1.5}{2}=0.75

Hence, the greater rate of change has function 1.

3 0
3 years ago
Here is a pattern of dots.
EleoNora [17]

The dots in the patterns are illustrations of a sequence or progression

  • The number of dots in step 10 is 84
  • The number of dots in step n is (n -1)^2+ 3

<h3>The number of dots in step 10</h3>

From the pattern, we have:

  • Step 0 = 3 dots
  • Step 1 = 4 dots
  • Step 2 = 7 dots
  • Step 3 = 12 dots

So, we have the following pattern

T_n = (n -1)^2+ 3

When n = 10, we have:

T_{10} = (10 -1)^2+ 3

T10 = 84

This means that, there will be 84 dots in step 10 and there will be (n -1)^2+ 3 dots in step n

Read more about sequence at:

brainly.com/question/7882626

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2 years ago
15 points !<br> Find m &lt; RQP
Phoenix [80]

Answer:

<RQP = 70°

Step-by-step explanation:

<RQP = 1/2 (140)

<RQP = 70°

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Zepler [3.9K]
It took 12 days for all the 60 gallons of water to leak out of the barrel. If you divide 60 by 5 you will get 12.
4 0
3 years ago
Read 2 more answers
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