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Elan Coil [88]
3 years ago
12

Solve for r. k=3r-7s

Mathematics
1 answer:
const2013 [10]3 years ago
5 0
R=7s/3+k/3

Hope this helps!
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Simplify tanx×sinx+cosx​
Rom4ik [11]

Answer:

sin ^2 ( x )  over cos ( x )  +  cos ( x )

5 0
3 years ago
Let f(x)=7x^2-8. find f(a^2)
strojnjashka [21]

Answer:

\large\boxed{f(a^2)=7a^4-8}

Step-by-step explanation:

f(x)=7x^2-8\\\\f(a^2)\to \text{put}\ x=a^2\ \text{to the equation of the function}\ f:\\\\f(a^2)=7(a^2)^2-8\qquad\text{use}\ (a^n)^m=a^{nm}\\\\f(a^2)=7a^{2\cdot2}-8\\\\f(a^2)=7a^4-8

6 0
3 years ago
Please help me <33333
mariarad [96]
Comment
You have to begin by declaring what g(f(x)) means. It means that wherever you see an x in g(x) you put in f(x).

I
t will look like this to start with
g(f(x)) = (f(x) + 5) / (f(x) 

Now substitute into this for g(-3)

g(x^2 + 5) = (x^2 + 5 + 5)/(x^2 + 5) It's time to use some numbers.
g(- 3) = ((-3)^2 + 10)/( (-3)^2 +5)
g(-3) = ( 9 + 10 ) / ( 9 + 5)
g(-3) = (19)/14 <<<<<< answer.
C <<<< answer. 
8 0
3 years ago
GIVING BRAINLIEST FOR BEST ANSWER!
Anarel [89]

Answer:

9/7

Step-by-step explanation:

13/14 - 1/7 + 1/2

taking LCM

=(13-2+7)/14

=18/14

to its lowest term

=9/7

6 0
2 years ago
Read 2 more answers
You need to buy 12 tickets to a weekend concert festival but have two options for where to purchase them. Concert Specialties se
AURORKA [14]

Answer:

Concert Specialties is the better buy

Step-by-step explanation:

In order to determine which of the two deals is the better buy, we first need to find out how many of each pack we would need to get the needed 12 tickets. Once we have this value we multiply it by the dollar amount of each pack and compare the totals like so...

Concert Specialties => pack of 3 * 4 = 12 tickets => 4 * 75 = $300

We 'R' Entertainment => pack of 4 * 3 = 12 tickets => 3 * 108 = $324

Therefore, we can now see that the Concert Specialties is the better buy since you are getting the 12 tickets for $24 less than We 'R' Entertainment

3 0
3 years ago
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