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eduard
3 years ago
5

If an object moves 40 m north, 40 m west, 40 m south, and 40 m east, what's the total displacement?

Mathematics
2 answers:
Likurg_2 [28]3 years ago
8 0
Hey i just took the PF test. the correct answer is B: 0 m.
BlackZzzverrR [31]3 years ago
3 0

Answer:

B. 0 m

Step-by-step explanation:

We are given the movement of an object and are required to find the total displacement.

Now, as we know that 'displacement' refers to the length of the shortest path between two points.

i.e. We are required to find the shortest path the object covers.

Now, we can see from the figure below that the given movement,

40 m north → 40 m west → 40 m south → 40 m east,

will bring the object back to the original position ' O '.

Hence, the total displacement will be 0 m.

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Evaluate the expression |x-10| when x= -8<br><br> a. -8<br> b. -18<br> c. 8<br> d. -18
nordsb [41]
|x-10| when x = -8
| - 8 - 10 | = |-18| = 18 <==
4 0
3 years ago
An arithmetic sequence with a third term of 8 and a constant difference of 5.
larisa [96]
An arithmetic sequence (a_n) is as follows:

a_1\\a_2=a_1+d\\a_3= a_1+2d\\a_4=a_1+3d,... where a_1 is the first term and d is the constant difference, 

thus, we see that the n'th term of an arithmetic sequence is a_n=a_1+(n-1)d


in our particular case d=5, the third term is 8, so we have:

a_3=8=a_1+2\cdot5\\\\8=a_1+10\\\\a_1=-2


and the general term is a_n=-2+5(n-1),


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8 0
3 years ago
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Step-by-step explanation:

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5 0
3 years ago
A.B,and C are collinear. AB=5x-19,and BC= 3x+4. Find an expression for AC if B is between A and C.
uysha [10]
Find A <span>if B is between A and C.
</span><span>A.B,and C are collinear so A, B and C are line up in a line</span>

AC = AB + BC

AB=5x-19,and BC= 3x+4 given;

So

AC = 5x-19 + 3x+4

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4 0
3 years ago
Pam bought 20 pieces of fruit for her class.
Maksim231197 [3]

Answer:

Step-by-step explanation:

Let O=number of oranges and A=number of apples.

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O=20-A

1.25A+0.95O=22.60, using O found above makes this become

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1.25A+19-0.95A=22.60

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A=12, since O=20-A

O=20-12

O=8

So she bought 8 oranges and 12 apples. The question really only asks for the number of apples bought.

12 apples were bought.

7 0
3 years ago
Read 2 more answers
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