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Illusion [34]
3 years ago
10

Please help! I'd appreciate it !

Mathematics
1 answer:
Alla [95]3 years ago
4 0
Get a tutor at the library
You might be interested in
1.) If x varies directly as y and x = 35 when y = 7. What is the value of y when x = 25?​
Fiesta28 [93]

Answer:

y = 5

Step-by-step explanation:

    x \ \alpha \  y

=> x = k \times y\\=> 35 = k \times 7\\=> k = 5

    x = k \times y

=>25 = 5 \times y\\ =>5 = y

8 0
3 years ago
Read 2 more answers
Determine if 0.949449444944449444449 rational or irrational and give a reason for answer. ​
Kamila [148]

Answer:

irrational if it's more after this number but if it stops at the last 9 then it's a rational number

hope this helps

have a good day :)

Step-by-step explanation:

4 0
3 years ago
The differential equation of a certain system is 20⁢y′⁢′+c⁢y′+80⁢y=0
Sholpan [36]

Answer:

c=80

Step-by-step explanation:

Based on my reading the critical damping occurs when the discriminant of the quadratic characteristic equation is 0.

So let's see that characteristic equation:

20⁢r^2+c⁢r+80⁢=0

The discriminant can be found by calculating b^2-4aC of ar^2+br+C=0.

a=20

b=c

C=80

c^2-4(20)(80)

We want this to be 0.

c^2-4(20)(80)=0

Simplify:

c^2-6400=0

Add 6400 on both sides:

c^2=6400

Take square root of both sides:

c=80 or c=-80

Based on further reading damping equations in form

a⁢y′⁢′+b⁢y′+C⁢y=0

should have positive coefficients with b also having the possibility of being zero.

5 0
3 years ago
What is z?<br> 5z+8=4z+20<br> Once again im struggling and need help fast..=)
mixas84 [53]
Z= 12 hope this helps
4 0
3 years ago
Read 2 more answers
Please help!!!!this is my last part of my discussion and I am stuck on it I would really appreciate the help!!
frosja888 [35]

x + 5 = 0 - > x = -5

5 0
3 years ago
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