1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kaheart [24]
3 years ago
5

Solve 3^2y−2=81^2y+1

Mathematics
1 answer:
DENIUS [597]3 years ago
7 0

Answer:

y = -1

Step-by-step explanation:

Solve 3^2y−2=81^2y+1

3^(2y - 2) =   81^(2y + 1)

3^(2y - 2) =   (3^4)^(2y + 1)

3^(2y - 2) = 3^(4*(2y + 1))

3^(2y - 2) = 3^(8y + 4)

2y - 2 = 8y + 4

2y - 2 - 4 = 8y

-6 = 6y

y = -1

You might be interested in
Solve the formula Ax+Bx = c for y
IgorC [24]

Answer:

B

Step-by-step explanation:

The correct formula given is:

Ax+By=c

We need to solve for y. First, we isolate the "y" term:

Ax+By=c\\By=c-Ax

Now, there's a "B" with y, to isolate the "y", we need to divide both sides by "B" and get "y":

By=c-Ax\\\frac{By}{B}=\frac{c-Ax}{B}\\y=\frac{c-Ax}{B}

Answer choice B is right.

3 0
3 years ago
Write a function rule for the table. p = 12.5h p = h + 12.5 h = 6.25p p = 6.25h
Neko [114]
I dont know what this is sorry i could not help you
5 0
4 years ago
Read 2 more answers
D
avanturin [10]

Answer:

1

Step-by-step explanation:

because i said so

5 0
3 years ago
137.5 is 125% of what number
Lana71 [14]
Percent means parts out of 100
125%=125/100=1.25

'of' menas multily

'is' means equals

137.5 is 125% of what
137.5=1.25 times what
divide both sides by 1.25
108=what


the number is 108
3 0
4 years ago
M is directly proportional to r^3
Oliga [24]

Answer:

<em>r=6</em>

Step-by-step explanation:

<u>Proportions </u>

We know M is directly proportional to r^3

This can be written as

M=kr^3

Where k is the constant of proportionality which will be determined knowing that when r = 4, M= 160. Substituting in the equation above:

160=k\cdot 4^3

160=k\cdot 64

Solving for k:

k=\frac{160}{64}=2.5

The equation is:

M=2.5\cdot r^3

Now find r when M=540:

540=2.5\cdot r^3

Dividing by 2.5:

216=r^3

Taking cube roots:

r=\sqrt[3]{216}

r=6

3 0
3 years ago
Other questions:
  • Rewrite the equation below to express the cost (c) as a function of miles (m). The charge for a rental car is $20 plus $0.05 per
    9·2 answers
  • ~please only answer if you know for sure~<br> Thanks :)
    11·2 answers
  • What is the numerator and the denominator of the fraction +1 equal to 0.998 repeating
    11·1 answer
  • To express the polynomial d^2+d^3-d+3 in standard form, which term should be written first?
    13·2 answers
  • The diagram shows a large square divided into squares of three different sizes.
    5·1 answer
  • Algebra II Part 1
    8·1 answer
  • Of 200 Boston residents surveyed, all but 18 were born in Massachusetts. What percent of the residents surveyed were not born in
    5·1 answer
  • At a summer camp, the ratio of campers to adults is kept equivalent to 7:1. (Campers 7, 14, 28, 42
    8·1 answer
  • A line has a slope of -4 and includes the points (-3, p) and (-4,0). What is the value of p?
    9·1 answer
  • There are 6 members of the student council and there are 10 chairs in their meeting room. If all 6 members
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!