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yarga [219]
3 years ago
15

Match the following items. Plane Point Line Ray Line segment

Mathematics
1 answer:
Sophie [7]3 years ago
8 0

Answer:

The first one is a line because a line extends infinitely in both directions which the arrows indicate.

The second one is a plane since it is a 2-dimensional shape.

The last one depicts 2 rays because rays have one endpoint, but extend infinitely in the other direction.

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Jarett's puppy weighed 3 3/4 ounces at birth at one week old, the puppy weighed 5 1/8 ounces at two weeks old the puppy weigh at
Mariulka [41]
Well, i find it helps to turn the fractions into decimals. 
3 3/4 = 3.75
5 1/8 = 5.125 

so now subtract: 
5.125 - 3.75 = 1.375 

so that means it weighs 1.375 ounces more each week

so then take the second week (5.125) and add on 1.375

5.125 + 1.375 = 6.5 

now to convert that into a fraction (lowest terms) it would be: 
6 1/5 ounces 

Therefore, 
Jarett's puppy will weigh 6 1/5 ounces at three weeks old. 

Hope this helps and ave a great day! :D
7 0
3 years ago
(b) For those values of k, verify that every member of the family of functions y = A sin(kt) + B cos(kt) is also a solution. y =
frutty [35]

Answer:

Check attachment for complete question

Step-by-step explanation:

Given that,

y=Coskt

We are looking for value of k, that satisfies 4y''=-25y

Let find y' and y''

y=Coskt

y'=-kSinkt

y''=-k²Coskt

Then, applying this 4y'"=-25y

4(-k²Coskt)=-25Coskt

-4k²Coskt=-25Coskt

Divide through by Coskt and we assume Coskt is not equal to zero

-4k²=-25

k²=-25/-4

k²=25/4

Then, k=√(25/4)

k= ± 5/2

b. Let assume we want to use this

y=ASinkt+BCoskt

Since k= ± 5/2

y=A•Sin(±5/2t)+ B •Cos(±5/2t)

y'=±5/2ACos(±5/2t)-±5/2BSin(±5/2t)

y''=-25/4ASin(±5/2t)-25/4BCos(±5/2t

Then, inserting this to our equation given to check if it a solution to y=ASinkt+BCoskt

4y''=-25y

For 4y''

4(-25/4ASin(±5/2t)-25/4BCos(±5/2t))

-25A•Sin(±5/2t)-25B•Cos(±5/2t).

Then,

-25y

-25(A•Sin(±5/2t)+ B •Cos(±5/2t))

-25A•Sin(±5/2t) - 25B •Cos(±5/2t)

Then, we notice that, 4y'' is equal to -25y, then we can say that y=Coskt is a solution to y=ASinkt+BCoskt

4 0
3 years ago
community group bought 30 tickets to an amusement park at a total cost of $810. They bought x student tickets for $25 each and y
Zina [86]

it would be 18 student tickets and 12 adult tickets

18x25= 450

12x30 = 360

360+450 = 810

4 0
3 years ago
Expand: x(3 + 9). please
Oksi-84 [34.3K]

Answer:

x(3 + 9) = 3x + 9x = 12x

Step-by-step explanation:

...........

8 0
3 years ago
What is the solution for I
xeze [42]

Answer:

no solution

Step-by-step explanation:

5 0
3 years ago
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