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Ivahew [28]
3 years ago
8

Topic 12 Online math help

Mathematics
1 answer:
miss Akunina [59]3 years ago
4 0

Answer:

8 students

Step-by-step explanation:

There are 8 dots on and after 5 on the plot, meanign the answer is 8 students

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Suppose a triangle has two sides of length 3and 4 and that the angle between these two sides is 60. What is the length of the th
tangare [24]

9514 1404 393

Answer:

  A.  √13

Step-by-step explanation:

You can make an educated guess and come to the right conclusion.

The triangle is nearly an equilateral triangle. A triangle with two sides 3 and an angle of 60° would have a third side of 3. A triangle with two sides of 4 and an angle of 60° would have a third side of 4.

So, the third side must be between 3 and 4. Here is an evaluation of the answer choices:

__

A -- between 3 and 4, the correct choice

B -- 3, too short

C -- 1.73, too short

D -- more than 4, too long

__

The question can be answered using your triangle solver app on your calculator, or using the Law of Cosines.

  c = √(a^2 +b^2 -2ab·cos(C))

  c = √(3^2 +4^2 -2·3·4·(1/2)) = √(9 +16 -12)

  c = √13 . . . . . length of the side opposite the 60° angle

5 0
3 years ago
Find f(-2) for f(x)=3•2^x
8_murik_8 [283]

Answer:

0.75 or 3/4

Step-by-step explanation:

f(-2) = 3•2^-2

f(-2) = 3•0.25

f(-2) = 0.75 or 3/4

Hope this helps! :)

5 0
3 years ago
You lend $240 to your friend. He pays you back
musickatia [10]

Answer:

20

Step-by-step explanation:

because if you subtract 270 by 240 its 20

6 0
3 years ago
A vehicle originally travelled at 30 kph. Now its speed is increased to 10 kph more than twice its original speed. What is the s
Helen [10]

Answer:

20kph

Step-by-step explanation:

10 * 2 = 20

8 0
3 years ago
Question 1*<br> 10 points<br> 2(x + 10) = 60<br> A. 25<br> B. -20<br> C. -25<br> D. 20
Lana71 [14]

Answer:

d

Step-by-step explanation:

5 0
3 years ago
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