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
defon
2 years ago
7

(1 pt) Which answer best describes the solution to the equation 3m – 9 = 9 + 3m?

Mathematics
1 answer:
seropon [69]2 years ago
3 0
3m-9=9+3m
add 9 to both sides
3m=18+3m
minus 3m both sides
0=18
false
no solution

the best discription would be an empty solution set
You might be interested in
Write a quadratic function whose zeros are -12 and -2.
AnnZ [28]

Answer:

(x+12) (x+2)

x(x+12)+2(x+12)

x^2+12x+2x+24

x^2+14x+24

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
63+d=105 What is this answerrr
Allushta [10]

Answer:

42

Step-by-step explanation:

105 - 63 = 42

7 0
3 years ago
Read 2 more answers
Which expression is equivalent to the given expression?
kupik [55]
The answer is 4a - 12 so b.
7 0
3 years ago
Read 2 more answers
Kasey asked 6 of her friends how many episodes of their favorite show they
ivanzaharov [21]

Answer:

A

Step-by-step explanation:

6 friends

Mean - 10

Median - 9.5

Range - 14

3 friends watched 12, 13, and 18 movies.

Let's find the sum, this will help us find the total number of movies the other 3 friends watched.

12 + 13 + 18 = 43

The mean is all their movies added toether, divided by the number of friends.

m = number of movies the other friends watched.

(43 + m) / 6 = 10        Multiply each side by 6

43 + m = 10 * 6

43 + m = 60          Subtract 43 from each side

m = 60 - 43

m = 17

So we know the total movies the other friends watched is 3.

A. 4+6+7 = 17

B. 4+4+7 = 15

C. 5+8+9 = 22

D. 2+3+5 = 10

We know the answer is A.

We can check it by looking at the Median, the median is the middle number, if there are an even number of samples, you add the 2 middle numbers together and divide by 2.

4, 6, 7, 12, 13, 18

So 7+12 = 19

19/2 = 9.5

So we know for sure A is correct!

3 0
3 years ago
A solution initially contains 200 bacteria. 1. Assuming the number y increases at a rate proportional to the number present, wri
GuDViN [60]

Answer:

1.\frac{dy}{dt}=ky

2.543.6

Step-by-step explanation:

We are given that

y(0)=200

Let y be the number of bacteria at any time

\frac{dy}{dt}=Number of bacteria per unit time

\frac{dy}{dt}\proportional y

\frac{dy}{dt}=ky

Where k=Proportionality constant

2.\frac{dy}{y}=kdt,y'(0)=100

Integrating on both sides then, we get

lny=kt+C

We have y(0)=200

Substitute the values then , we get

ln 200=k(0)+C

C=ln 200

Substitute the value of C then we get

ln y=kt+ln 200

ln y-ln200=kt

ln\frac{y}{200}=kt

\frac{y}{200}=e^{kt}

y=200e^{kt}

Differentiate w.r.t

y'=200ke^{kt}

Substitute the given condition then, we get

100=200ke^{0}=200 \;because \;e^0=1

k=\frac{100}{200}=\frac{1}{2}

y=200e^{\frac{t}{2}}

Substitute t=2

Then, we get y=200e^{\frac{2}{2}}=200e

y=200(2.718)=543.6=543.6

e=2.718

Hence, the number of bacteria after 2 hours=543.6

4 0
3 years ago
Other questions:
  • The expression 3x^2-33x-180 can be factored into the form a(x+b)(x+c) where a, b, and c are constants, to reveal the zeros of th
    13·1 answer
  • Seven less than twice a number is -19
    5·2 answers
  • Explain why the square root of 38 is an irrational number.<br><br> Pls Help Me.
    14·1 answer
  • What is f(5) for f(x)=4x^2-5x+2?<br> A)-24<br> B)77<br> C)127<br> D)150
    9·2 answers
  • State the domain of the following relation and state if it is a function. (2, 4), (8, 6), (5, 5), (2, 7), (4, 5)
    8·1 answer
  • CaN YOu HeLP Me PleAse????????
    11·1 answer
  • Cara is painting her living room. The room measures 10.6 feet by 11.6 feet. The ceiling is 10 feet
    14·1 answer
  • There are 12 pieces of fruit in a bowl. Seven of the pieces are apples and two are peaches. What is the probability that a rando
    11·1 answer
  • Maya's penny bank is 3/4 full. After she removes 280 pennies, it is 1/2 full. How many pennies can Maya's bank hold?
    7·1 answer
  • What 5/6 and 4 2/7 product.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!