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
Pani-rosa [81]
3 years ago
5

parker correctly answered 70% of the questions on his math test. If he answered 35 questions correctly, how many questions were

on his math test? define a variable. write and solve an equation
Mathematics
2 answers:
Bond [772]3 years ago
8 0
70% of the total questions = 35

0.70x = 35.....with x being the total questions
x = 35 / 0.70
x = 50 <== 50 total questions
Alexandra [31]3 years ago
4 0

Let the total number of questions in the math test be defined by the variable x.

Now, we know that Parker correctly answered 35 questions. These 35 questions make 70% of the total number of questions on his math test.

The information we have above can be expressed as an equation given below:

70% of x=35

This can be rewritten as:

\frac{70}{100}x=35

Thus, to find the total number of questions we will have to isolate x.

\therefore x=\frac{35\times 100}{70}=50

Therefore, there were a total of 50 questions in the math test.

You might be interested in
What is the mean of the following data values 22,37,49,15,72
nexus9112 [7]
Mean simply means average
so just add them all up and divide by 5

22 + 37 + 49 + 15 + 71 = 195
195/5 = 39

mean = 39
3 0
4 years ago
Read 2 more answers
A car was purchased for $34,000. The car depreciates by 27% of each year
jekas [21]

Answer: a) $778.67  b) 19 years

Step-by-step explanation:

The formula you would use is

a_{n}=P(1-r)^{n}

where a is the amount

n is the length of time

P is the principle

and r is the rate in decimal form

a)

a^{12} =34,000(1-.27)^{12} \\a_{12}=34,000(.73)^{12}\\a_{12} =778.67

b)

put your initial equation into a graphing calculator and  use the table function to find that after 18 years it is worth 117 and in 19 years 86-

7 0
3 years ago
I want to withdraw 400.00 for 9 years at 8%. How much do I need to deposit
Degger [83]

Answer:

The principal investment required to get a total amount, principal plus interest, of $400.00 from simple interest at a rate of 8% per year for 9 years is $232.56.

Step-by-step explanation:

Given

  • Total accrued Amount A = 400.00 (Let say $)
  • Time period t = 9 years
  • Interest rate r = 8% = 0.08

To determine

Principle P = ?

Using the formula

P = A / (1 + rt)

substituting A = 400.00, t = 9 and r = 0.08 in the formula

P = 400 / ( 1 + (0.08 × 9))

P = $232.56

Therefore, the principal investment required to get a total amount, principal plus interest, of $400.00 from simple interest at a rate of 8% per year for 9 years is $232.56.

7 0
3 years ago
Miguel ordered a rectangular print for his bedroom. The print is 7/8 feet wide and 1 3/5 feet long. What is the area of the prin
Fynjy0 [20]

Answer:

1 2/5

Step-by-step explanation:

1 3/5 = 8/5, 7/8 * 8/5 = 1.4

1.4 as a fraction is 7/5

Simplify it and you get 1 2/5

7 0
4 years ago
Please Help!
Nezavi [6.7K]

Let the first number = x

The second number would be 5x

The third number would be 100x

Add:

X + 5x + 100+x = 296

Simplify:

7x + 100 = 296

subtract 100 from both sides:

7x = 196

Divide both sides by 7

X = 196 / 7

X = 28

First number is 28

Second number is 28 x 5 = 140

Third number = 128

5 0
3 years ago
Other questions:
  • Peter spends $75 for a video game and a CD. The CD costs $15. The cost of the CD is what percent of the money spent on the game
    9·1 answer
  • The​ ​cost​ ​to​ ​manufacture​ ​​x​​ ​number​ ​of​ ​chairs​ ​can​ ​be​ ​represented​ ​by​ ​the​ ​function​ ​C(x)=36x .​ ​In​ ​th
    12·1 answer
  • painted a fence that was 84 meters long. She was able to paint 4 meters per hour. How many meters of fence were left after Alyss
    10·1 answer
  • Idk what to do.... please help!
    11·2 answers
  • (Will Mark Brainliest!!!)Choose the point-slope form of the equation below that represents the line that passes through the poin
    14·1 answer
  • Find the oth term of the geometric sequence 9, -18,36,...<br> Pls helpllllll
    11·1 answer
  • Michaela's room is 12 feet wide by 8 feet long. Her brother's room is half as wide but twice as long. Whose room is bigger?
    12·2 answers
  • The side lengths of a triangle are 5, 10, and 13. Is this a right triangle?
    13·2 answers
  • Find the area of the triangle
    7·1 answer
  • Suppose that an individual has a body fat precentage of 16.8% and weighs 177 pounds. how many pounds of his weight is made up of
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!