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
Gemiola [76]
3 years ago
9

3. Define a variable, write an equation, and solve the problem. Carla began a

Mathematics
1 answer:
faust18 [17]3 years ago
3 0

Answer:

Carla has been running 7 miles each day for 13 days.

Step-by-step explanation:

Carla ran 3 miles on her first day, 5 miles on her second day and then 7 miles each day onward.

Let the number of days she ran 7 miles each day = x

Total distance run by Carla = 3 + 5 + 7(x)

                                             = 8 + 7x

If her log book shows that she has run total distance = 99 miles

Equation representing her total run will be,

8 + 7x = 99

7x = 99 - 8

7x = 91

x = \frac{91}{7}

x = 13 days

Therefore, Carla has been running 7 miles each day for 13 days.

You might be interested in
Desiree ran 12 miles in 1 hr, 48 minutes, What was Desiree's average running rate, in minutes per mile
Rina8888 [55]

Answer: 1/9

Step-by-step explanation:

60 + 48 = 108 minutes

12 / 108 = 1/9

3 0
3 years ago
Rene is going to the lake to visit some friends. If the lake is 60 miles away, and Rene is driving at 40 miles per hour the enti
Tpy6a [65]
One hour and twenty minutes????
6 0
2 years ago
Round to the nearest hundredth (Geometric Series problem)
WITCHER [35]

Answer:

15.98

Step-by-step explanation:

∑₁¹⁰ 8(\frac{1}{4} )^{n-1}

=8[1+\frac{1}{4} +\frac{1}{16} + ........ +t_{10}]

We have to use the formula of sum of a G.P. series with common ratio r < 1.

If the first term is a, the common ratio is r and the number of terms is n then the sum [a + ar + ar² + ar³ + ......... up to n terms] is given by  

[a \times\frac{1-r^{n} }{1-r}]

= 8[1 \times \frac{1-\frac{1}{2^{10} } }{1-\frac{1}{2} } ]

= 15.98 (Answer)

4 0
2 years ago
7x-5=8(x+3) solve for x​
Harlamova29_29 [7]

Answer:

The value of x is -29.

Step-by-step explanation:

We are given an algebraic equation and have one goal: solve for x. We can use simplifying techniques as well as addition and subtraction to solve this equation.

\text{7x - 5 = 8(x + 3) \ \ \ Distribute the 8 throughout the parentheses.}\\\text{7x - 5 = 8x + 24 \ \ \ \ Subtract 7x from both sides.}\\\text{-5 = x + 24 \ \ \ \ \ \ \ \ \ \ Flip the equation.}\\\text{x + 24 = -5 \ \ \ \ \ \ \ \ \ \ Subtract 24 from both sides.}\\\small\boxed{\bold{{x = -29}}}

Now that we have solved for x, we can plug in -29 to see if we get a true statement.

\text{7(-29) - 5 = 8(-29 + 3)}\\\text{-203 - 5 = -232 + 24}\\\text{-208 = -208} \ \checkmark

Because we ended up with a true statement, we have determined that the value of x is -29.

6 0
2 years ago
Someone help please I wi appreciate itttt so much
Dmitry_Shevchenko [17]

Answer:

65

Step-by-step explanation:

66

3 0
3 years ago
Other questions:
  • Sam and Bethan share £54 in the ratio 5:4 Work out how much each person gets
    12·1 answer
  • A survey asked a group of students to choose their favorite type of snack. The results of the survey are shown in the graph. Bas
    6·2 answers
  • The youth center has another mural painted inside the building. if the original painting is 3 feet by 2 feet, and the mural is 1
    6·1 answer
  • Translate this phrase into an inequality. The sum of two consecutive even integers is at most seven more than half the sum of th
    15·1 answer
  • Hi:) how to do this?
    5·1 answer
  • Which letter has rotational symmetry? Answer Choices: 1. B 2. R 3. J 4. I
    12·1 answer
  • Answer the following questions.
    7·1 answer
  • Magda is playing a game with colored cards. Each card has a number on it. Magda chooses one card at random. All possible outcome
    13·1 answer
  • John D. Rockefeller died in 1937. At the time of his death, Rockefeller had accumulated $1400 million, which was equal to one si
    10·1 answer
  • There are only red counters and blue counters in a bag
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!