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
elena-14-01-66 [18.8K]
2 years ago
15

3. Frank and Marissa took a taxi. The tax Charges $5.00 per person and $1.30 per mile. If the total bill

Mathematics
1 answer:
8_murik_8 [283]2 years ago
3 0

Answer:

The taxi ride is 6.5 miles.

Step-by-step explanation:

5x+1.3y=18.45

5(2)+1.3y=18.45

10+1.3y=18.45

1.3y=18.45-10

1.3y=8.45

y=8.45/1.3

y=6.5

You might be interested in
The population of a certain species of fish has a relative growth rate of 1.1% per year. It is estimated that the population in
Juliette [100K]

Answer:

(a) n(t) = P(0)*e^(0.010939940t)

(b) 12,674,681 (nearest unit)

(c) 14 years (nearest year)

Step-by-step explanation:

rate = 1.1% / year = 1.011

(a)

P(0) = 12,000,000  = population in 2010

In compound interest format, after t years

P(t) = P(0)* (1.011)^t

Given format = P(0)* e^(rt)

therefore

e^(rt) = 1.011^t       use law of exponents

(e^r)^t = 1.011^t

e^r = 1.011

r = log_e(1.011) = 0.010939940   (to 9 decimal places)

required formula is

n(t) = P(0)*e^(0.010939940t)

(b)

in 2015,

P(0)=12000000, n = 5 (years after 2010)

n(5) = 12000000*e^( 0.010939940 * 5 ) = 12,674,680.6 = 12,674,681 (nearest unit)

(c)

to reach 14 million, we equate

n(t) = 14,000,000

12,000,000 *e^(0.010939940*t) = 14,000,000

e^(0.010939940*t) = 14000000/12000000 = 7/6

take log on both sides

0.010939940*t = log(7/6)

t = log(7/6) / 0.010939940 = 14.091 years = 14 years to the nearest year.

See graph attached.  Y-axis is in millions, x-axis is in years.

4 0
3 years ago
Need help in 5 and 6 PLEASEE!!
klasskru [66]
5) Step-by-step solution:
Step 1 of 2
Write the numbers (other than dates) in this statement in scientific notation.
The mass of Pluto, the smallest planet, is 0.0021 times that of Earth; The mass of Jupiter, the largest planet, is 317.83 times that of earth.
The first number is 0.0021.
Now move the decimal point to the right of the first nonzero digit and count the number of places it was moved.

The original number (0.0021) was small so the exponent will be .
Therefore, the scientific notation is .
Step 2 of 2
The second number is 317.83.
Now move the decimal point to the right of the first nonzero digit and count the number of places it was moved.

The original number (317.83) was large so the exponent will be .
Therefore, the scientific notation is .

6) Simply move the decimal point 16 places to the right of where it currently is.

9.803 moved three times = 9803.
Then just add 13 zeroes (because 16 minus those first three = 13) to 9803, giving you a final result of 98030000000000000. Then if you wanted to make it pretty on your eyes with commas, it would be 98,030,000,000,000,000.
6 0
3 years ago
a large container holds 5 gallons of water. it begins leaking at a constant rate. after 15 minutes, the container has 2 gallons
Scrat [10]

Answer:

1 gallon ever 5 minutes here is the fraction form if you need it for a graph 3/15 or 1/5

Step-by-step explanation:

if there is 3 gallons gone and it is constant then on gallon goes every 5 minutes 15/3=5

8 0
3 years ago
What is the value of x in the equation 2<br> (4x+)-(3x+2)- 8(9-x) = x
Readme [11.4K]

Answer:

open the bracket

(4X+)-3X-2-72+X=X

4X+(-3X)-74+X=X

X-74+X=X

2X-74=X

then collect the term

-74=X-2X

-74=-X

divide by negative every side then you get

X=74

7 0
2 years ago
2.10.3 discuss: Group Discussion <br> For Apex
andrezito [222]
What is the question
5 0
3 years ago
Other questions:
  • For the following exercise, consider this scenario: A town's population has been increasing at a constant rate. In 2010 the popu
    15·1 answer
  • A rectangle has a perimeter of 60 inches and length of 22 what is the width of the rectangle
    14·1 answer
  • Kyle is converting 13°F to °C. His work is shown. Is Kyle's answer correct? If not, find his mistake and determine the correct a
    11·2 answers
  • What is x exponent 2 + 3x - 4 = 6X
    5·2 answers
  • Edward’s recipe for salad uses a ratio of 3 3/4 cups of lettuce to 1/2 lb of tomatoes. Use a complex fraction to compare the amo
    10·1 answer
  • WILL NAME BRAINLIEST WHOEVER CAN HELP ME FIRST! PLEASE I NEED A REAL ANSWER!! A quadrilateral is graphed on a coordinate plane.
    12·1 answer
  • B. Construct Arguments Tom says his friends ate the same amount of vegetable pizza as pepperoni pizza. How could that be true?​
    9·1 answer
  • A plot of rectangular land is divided into 3 sections, P.
    6·1 answer
  • Compare 6/8 and 21/28
    15·2 answers
  • Select all of the symbols that would make the comparison true.
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!