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salantis [7]
3 years ago
11

I need help with these problems please and thank you

Mathematics
2 answers:
AURORKA [14]3 years ago
7 0

Answer:

Refractive index of a medium depends upon the refractive index of the surroundings

artcher [175]3 years ago
4 0

Answer:

5. There are 4 coins in every punch

6. There are 5 coins in every punch

7. There is 1 coin in every punch

8. There aren't coins in the punches

Step-by-step explanation:

5.

    4x+2=18\\4x=18-2\\4x=16\\x=\frac{16}{4} \\x=4

6.

    3x+5=20\\3x=20-5\\3x=15\\x=\frac{15}{3}\\x=5

7.

    2x+10=9+3x\\x+-3x=9-10\\-1x=-1\\x=1

8.

    2x+14=14\\2x=14-14\\2x=0\\x=\frac{0}{2}\\x=0

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Helpp please
telo118 [61]

Answer:

36

Step-by-step explanation:

12*3=36

36 of 1/3 feet of yarn

7 0
3 years ago
Read 2 more answers
4 Write a recursive formula for the sequence below.<br> f(1) = 3, f(2) = 7, f(3)=11, f(4)=15
iren2701 [21]

Answer:

<u>aₙ = aₙ₋₁ + 4</u>

Step-by-step explanation:

Finding the common difference (d) :

  • d = f(2) - f(1)
  • d = 7 - 3
  • d = 4

Hence, the recursive formula :

  • <u>aₙ = aₙ₋₁ + 4</u>
8 0
3 years ago
Find the average rate of change for f(x) = x2 + 9x + 18 from x = -10 to x = 10.
Ratling [72]
With the way the equation is written, we can assume that the “x2” is x multiplied by 2.

The x2 and 9x are like terms, and can be simplified to 11x.

Our new equation is
f(x) = 11x + 18

With no exponential functions in the equation, the difference of each value’s output would be 11.
4 0
4 years ago
Evaluate x^{3} - 3y when x = -3 and y = 4.
Inessa05 [86]

Answer:

-39

Step-by-step explanation:

Substitute x by - 3 and y by 4

(-3)^3 - 3 *4 = - 39

4 0
3 years ago
Need help with a and b parts
Masja [62]

Answer:

a)  10/27 or 0.37037

b) -8/7

Step-by-step explanation:

a)  Enter x=-5 into both equations and divide h(-5)/g(-5).  That yields 10/27 or 0.37037037037 . . .

b) g(x) cannot be 0 (can't divide by 0.  That would occur if x = -8/7, so it (-8/7) is not in the domain.

6 0
3 years ago
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