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2 years ago

Plz help i dont know the answer

Mathematics

1 answer:

Yuliya22 [10]2 years ago

4 0

Answer:

Im not 100 percent sure but I think you have to do this

Step-by-step explanation:

Add all numbers together to find total students

Then add the students in Chemistry and Physics and both together

Then find what that number is in percent to the total students

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HELP ME PLEASE?? :( HELP ME

Crazy boy [7]

I really dislike long simplification times 4 questions so I will jsut put the answers on some of them

1. remember that the denomenator cannot equal zero so find what values will and restrict them
the answer is the third one or $\frac{3}{(x+6)(x-1)}$

2. second one
(3x-2)/(5x)

3. what you would do is factor the top and divide factors making ones
answer is the fourth one or $\frac{2(3x^{2}-7)}{2x^{2}+3}$

4. find the LCM of the denoemators
4x and 2
4x=2 times 2 times x
2=2
LCM=4x
answer is the third one or 4x

ANSWERS:
1. third
2. second
3. fourth
4. third

5 0

3 years ago

The first company charges $50 for a service call,plus an additional $36 per hour for labor.The second company charges $35 for a

Karo-lina-s [1.5K]

Answer:

5 hours

Step-by-step explanation:

So what you have to do is set the two equal to one another and solve for x

50+36x=35+39x

-35 -35

15+36x=39x

-36x -36x

15= 3x

/3 /3

5=x

8 0

3 years ago

Read 2 more answers

Hi help me plsss :(((

babymother [125]

Answer:

The square root of 121 is 11, the square root of x^2 is x, the square root of y^3 is y and sqrt y, the square root of z^4, is z^2:

11xyz^2 sqrt(y)

Your answer is C

Note: If something is inside a radical, it is raised to an exponent of 1/2. You can rewrite anything inside the radical as raised to 1/2.

8 0

2 years ago

Read 2 more answers

Which relations are functions? Select all that apply.

kaheart [24]

Answer:

A and C

Step-by-step explanation:

B has a domain connected to many other ranges which makes a relationship but confuses the whole function making it incorrect.

For answer D, the x coordinates 1 and 3 both have two y coordinates. That again makes a relationship but confuses the function making that answer incorrect.

In answer A, no domain is repeated in any of the points making it a function.

In answer C, again no domains are paired with more than one range making it a function. That why A and C are the answers

7 0

2 years ago

Exercise 8. the temperature function in a laterally insulated rod made of copper is found (say experimentally) to be e−0.046t co

svp [43]

U2(x,t) = e^-k(w2^2)tcos(w2x)
= e^-0.046tcos(0.2x)
w2 = 0.2, w2^2 = 0.04

-0.046t = -k(w2^2)t
-0.046 = -k(0.2)^2
-0.046 = -k(0.04)
1.15 = k

4 0

3 years ago