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Savatey [412]
3 years ago
9

What is the speed of a wave if the wavelength is 100 m and the period is 20 s?

Mathematics
1 answer:
Tom [10]3 years ago
3 0

Answer:

80 m/s

Step-by-step explanation:

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F(x)=x3 −4x even odd or neither
Dennis_Churaev [7]

The answer is neither.

Let's take an odd number and substitute.

  • f(3) = 3³ - 4(3)
  • f(3) = 27 - 12
  • f(3) = 15 (odd)

Now, let's take an even number.

  • f(4) = 4³ - 4(4)
  • f(4) = 64 - 16
  • f(4) = 48 (even)

Since both even and odd numbers are possible, it is neither.

4 0
2 years ago
Read 2 more answers
Need help with this plzzz
beks73 [17]

Line 1

Natalie was supposed to use PEMDAS (as we all do when doing math), which stands for: Parentheses, Exponents, Mulitplication, Division, Addition, Subtraction. However, Natalie subtracted 1 from 2 before multiplying 6 by 4 and dividing it by 2.

Hope this helps!!

3 0
3 years ago
4/5 of 30=<br><br> 2/9 x 45=<br><br> 24 x 1/6=
balu736 [363]

Answer:

24

20

4

Step-by-step explanation:

⅘×30=24... 4×30=120, 5×30=150... 120/150

120/2=60

150/2=75

60/75= 0.8

⅘= 0.8

do the same with all of the others

8 0
3 years ago
Please help!! Question is in the picture
weeeeeb [17]

Answer: (5,8)

Step-by-step explanation:

So this is a matter of using a system of linear equations

To start if a total of 13 people got a ticket then we know that

x+y=13

x and y being explained in the problem

then if adult tickets are $40 and children tickets are $20 and the total cost is 360 we can set up the next equation

40x+20y=360

<em>If you were to plug in 1 lets say into x that means that 1 person bought a ticket for $40 this shown by 40 (1) this is the same premise for the childrens tickets.</em>

now we have

x+y=13

40x+20y=360

now we can solve by eliminating one of the variables this is done by either getting rid of the x or y and solving for the other. I solved for the y value first this looks like

-40(x+y=13)

40x+20y=360

Distribute the -40 to each value

giving you

-40x-40y=-520

40x+20y=360

add these together from the top down

the x's cancel leaving

-20y=-160

then isolate the y value by dividing both sides by -20

-20y/-20=-160/-20

leaving you with your y point

y=8

This is how many childrens rickets were sold now we can plug into the first linear equation

x+8=13

now easy subtration to isolate the x point

x+8-8=13-8

x=5

Finally leaving you with point (5,8)

4 0
3 years ago
Read 2 more answers
1. What is the value of y?
11111nata11111 [884]
1) y = 3
2) C.) 8 * 60 - 8 * 6  ⇒ it will look like this 8(60-6) ⇒ 8(54)
3) A) 7u + 5v
4) 4x³ and x³ are like numbers
5) Simplify: 5x³ - 2x² + x + 4x³
group like numbers: 5x³ + 4x³ - 2x² + x
9x³ -2x² + x ⇒ letter C.

6 0
3 years ago
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