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
olga_2 [115]
4 years ago
13

Andrew's math teacher entered the seventh grade students in a math competition there was an enrollment fee of $30 and also an $1

1 charge for each packet of 10 tests. The total cost was $151. How many tests were purchased?
Mathematics
1 answer:
N76 [4]4 years ago
5 0

Answer: 110

Step-by-step explanation:

Given;

Total cost C = $151

Enrollment fee E = $30

Charge per 10 test t = $11

n is the number of packet of test taken.

The questions can be represented by the equation below;

30 + 11n = 151

Substracting 30 from both sides.

11n = 151-30 = 121

n = 121/11

n = 11

Since the number of packet of test is 11 and each packet contains 10 tests. The number of test N is given by;

N = 10 n = 10 ×11 = 110

N = 110

You might be interested in
Solve the system of equations y=8x+15 y=3x+55
skelet666 [1.2K]
X=8 and y=79
 if you ever are stuck on questions like this, download the app photomath.I use it for my online class all the time
5 0
3 years ago
FP!!!!!!!!!!!!!!!!!!!!!<br><br> (10 x 100 ) + 980 = ?
pantera1 [17]

Answer:

Ans = 1980

Step-by-step explanation:

(10 x 100 ) + 980 = (1000) + 980

therefore

1980 is the answer

3 0
3 years ago
Linda throws a dart that hits the square shown below: A square is drawn. A circle of radius 9 units touches the sides of the squ
nataly862011 [7]

Probability helps us to know the chances of an event occurring. The probability of Linda's dart hitting the circle is 0.7857.

<h3>What is Probability?</h3>

The probability helps us to know the chances of an event occurring.

\rm{Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}

As it is given that the circle touches the sides of the square. therefore, the length of the side of the square is the diameter of the circle.

Now, in order to calculate the probability that the dart hits a point in the circle we need to calculate the area of the circle and the area of the square.

Area of the circle with a given radius of 9 units,

\text{Area of the circle} = \pi r^2

                           \rm = \pi \times (9^2)\\\\= 81\pi\ units^2

Area of the square with sides equal to the diameter of the circle,

\rm \text{Area of square} = side^2

                       \rm = Diameter ^2\\\\= (2 \times radius)^2\\\\= (2 \times 9)^2\\\\= 18^2\\\\= 324\ units^2

Now, the probability that the dart hits a point in the circle can be written as,

\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}\\\\\\Probability=\dfrac{\text{Area of the circle}}{\text{Area of square}}\\\\\\Probability=\dfrac{81 \pi}{324} = 0.7857

Hence, the probability of Linda's dart hitting the circle is 0.7857.

Learn more about Probability:

brainly.com/question/795909

3 0
2 years ago
There are 24 students in a science class.Mr.Sato will give each pair of students 3 Magnets.So far,Mr.Sato has given 9 pairs of s
Flauer [41]

Answer:

Mr. Sato needs 9 more magnets.

Step-by-step explanation:

The 24 students will form 12 pairs. The total number of magnets needed is 12*3 = 36. Mr. Sato  gave out 9*3=27 magnets already and so he will need 36 - 27 = 9 more magnets.

8 0
4 years ago
Help please I need this now
professor190 [17]

Answer:

what is the question i cat help without the question

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Describe a sequence of reflections, rotations, and translations that shows that quadrilateral ABCD is congruent to quadrilateral
    7·1 answer
  • I need to know the answer and how to do this stuff
    14·1 answer
  • Help. Math is the worstttt
    10·1 answer
  • Polynomial Equation: Write a polynomial that describes the area of the shaded figure. Show the steps mathematically and explain
    9·1 answer
  • Find the volume of the following shapes
    14·1 answer
  • MARK AS BRAINLIEST!!
    14·1 answer
  • How many bows can you make from 3 2/3 meters of ribbon if one bow takes 1/4 meter of ribbon?
    8·1 answer
  • I will give Brainiest if you are right
    8·1 answer
  • Hey how are you. i hope you are doing okay. because i am fine
    13·1 answer
  • A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make a green paint. Which ratio of gallons
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!