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
Ludmilka [50]
3 years ago
7

Isabel is three times as old as Nancy. The sum of their ages is 24. Which equation can be used to determine n, Nancy's age

Mathematics
1 answer:
Genrish500 [490]3 years ago
4 0

Answer:

6

Step-by-step explanation:

Let Nancy's age be represented by n

Because Isabel is 3 times as old as Nancy, her age would be represented by 3n

Sum of their ages = 24

n + 3n = 24

4n = 24

divide both sides of the equation by 4 to determine n

n = 6

You might be interested in
Water flows through a hose and fills a 100-gallon tank in eight minutes. When represented as a rate, in gallons per minute, what
sergiy2304 [10]

Answer:

0.08.

Step-by-step explanation:

8 0
3 years ago
V=s^2+ 1/2sh, solve for H.
vladimir1956 [14]
V = s^2 +1/2sh
Reorder so common terms are on one side.
s^2 +(sh)/2 = v
Subtract s^2 from both sides.
(sh)/2 = -s^2 +v
Multiply both sides of the equation by 2.
sh = -s^2 *2 +v *2
Simplify each term.
sh = -2s^2 +2v
Divide each term by s and simplify.

h = -2s + (2v)/s
3 0
3 years ago
A movie theatre marks up the price of popcorn 12 3/4 times the original cost. express 12 3/4 as a percent and decimal.
horrorfan [7]

Answer:

<em>Answer: F. 1,275% and 12.75.</em>

Step-by-step explanation:

<u>Ratios</u>

Ratios are usually expressed as decimals, fractions, colon notation, and percentages.

For example, if the ratio of two quantities is 2, it can be expressed as:

2, 2/1, 2:1, 200%

To obtain the percentage expression, just multiply by 100%.

The price of the popcorn sold at a movie theatre was marked up as 12 3/4 times the original cost.

The mixed fraction can be converted to a decimal by just adding their parts as follows:

12 + 3/4 = 12.75

Now to express it as a percentage, multiply by 100%:

12.75 * 100% = 1,275%

Answer: F. 1,275% and 12.75.

4 0
3 years ago
Daniel used 4 red markers and 8 blue markers, What is the ratio ofthe
Snowcat [4.5K]

Answer:

The ratio is 1:2, since there are half as many red markers as there are blue.

Step-by-step explanation:

6 0
3 years ago
At the beginning of an experiment, a scientist has 300 grams of radioactive goo. After 150 minutes, her sample has decayed to 37
monitta

Answer:

Half-life of the goo is 49.5 minutes

G(t)= 300e^{-0.014t}

191.7 grams of goo will remain after 32 minutes

Step-by-step explanation:

Let M_0\,,\,M_f denotes initial and final mass.

M_0=300\,\,grams\,,\,M_f=37.5\,\,grams

According to exponential decay,

\ln \left ( \frac{M_f}{M_0} \right )=-kt

Here, t denotes time and k denotes decay constant.

\ln \left ( \frac{M_f}{M_0} \right )=-kt\\\ln \left ( \frac{37.5}{300} \right )=-k(150)\\-2.079=-k(150)\\k=\frac{2.079}{150}=0.014

So, half-life of the goo in minutes is calculated as follows:

\ln \left ( \frac{50}{100} \right )=-kt\\\ln \left ( \frac{50}{100} \right )=-(0.014)t\\t=\frac{-0.693}{-0.014}=49.5\,\,minutes

Half-life of the goo is 49.5 minutes

\ln \left ( \frac{M_f}{M_0} \right )=-kt\Rightarrow M_f=M_0e^{-kt}

So,

G(t)= M_f=M_0e^{-kt}

Put M_0=300\,\,grams\,,\,k=0.014

G(t)= 300e^{-0.014t}

Put t = 32 minutes

G(32)= 300e^{-0.014(32)}=300e^{-0.448}=191.7\,\,grams

7 0
3 years ago
Other questions:
  • Kayla rolls two fair number cubes each numbered 1 through 6.She needs to roll a sum of 9 or more to win the game. She rolls the
    11·1 answer
  • How would I Graph this
    5·2 answers
  • PLEASE!!!! I NEED HELP!!!!!!
    7·2 answers
  • Raj drove his car 5 times farther than Gary drives his car. Together they drive 624 miles. How many miles does Raj drive?
    10·2 answers
  • Mr. Johnson is also comparing the two mobile phone data plans. Talk First charges $20 plus $5 per GB of data, while Mobile Plus
    9·1 answer
  • How do you solve 6=3+5(y-2)
    5·1 answer
  • What is 4,783 divided by 205,669???
    5·2 answers
  • Please answer !!!!!!
    8·1 answer
  • Best answer gets brainliest
    14·1 answer
  • 2 candy bars cost $0.98. At this rate, how much do 5 candy bars cost? The total cost for five candy bars is?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!