Assume x are Erica's classes & y are Bo's classes.
x+y=35
x=2y-13
Replacing the value of x into the first equation
2y-13+y=35
3y=35+13
y=16 classes
x=2*16-13=19 classes

7 0

2 years ago

Prove that 3 power p + 1 - 3 power P upon 2 multiply 3 power p is equal to 1

Anit [1.1K]

Answer:

see explanation

Step-by-step explanation:

note that $3^{p+1}$ = $3^{p}$ × 3 ( when multiplying exponents are added )

Given

$\frac{3^{p+1}-3^{p} }{2.3^{p} }$ ← factor out $3^{p}$ on numerator

= $\frac{3^{p}(3-1) }{2.3^{p} }$

= $\frac{2.3^{p} }{2.3^{p} }$

= 1

7 0

2 years ago

I WILL MARK BRAINLIEST IN ONLY 5-10 MINUTES.

Nesterboy [21]

LAMAOO I NEED A PICTURE PLS

3 0

2 years ago