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
Wittaler [7]
3 years ago
12

in a test +3 marks are given for every correct answer and -1 for every incorrect answer Mary attempted all questions and scored

+20 marks though she got 10 correct answers (1)how many incorrect answers has she attempted? (2)how many questions were given in the test?
Mathematics
1 answer:
AVprozaik [17]3 years ago
7 0

Answer:

10

20

Step-by-step explanation:

correct c=3 x 10

incorrect i=-1

-------

  • 3c-i=20
  • 3*10-i=20
  • i=10

incorrect= 10

number of questions= 10+10= 20

You might be interested in
In which set(s) of numbers would you find the number 0?
Harlamova29_29 [7]
Apparently it’s all of them
3 0
3 years ago
What part of the circumference is an arc whose measure is 30°?<br> 1/12<br> 1/10<br> 1/8<br> 1/6
GrogVix [38]

Answer:

1/12

Step-by-step explanation:

The whole circumference (i.e complete circle) is an arc which measures 360°

in our case, it is given that our arc measures only 30°

the fraction of our arc of 30° to the complete circle of 360° is

30/360

= 3/36

= 1/12

5 0
4 years ago
F
Aleks04 [339]

Answer:

F= 40

Step-by-step explanation:

F=ka

25 = k 5

k = 5

F=5a

F=5*8

F= 40

8 0
3 years ago
(3^2+4−2)(2^2−3−4) can you guys please solve this for me please.
Degger [83]

Answer:

-33

Step-by-step explanation:

(3^2+4-2)(2^2-3-4)

(9+4-2)(4-3-4)

(13-2)(1-4)

(11) · (-3)

(-33)

6 0
3 years ago
The following function represents the value of a house, in dollars, after x years: f(x) = 242,000(1.04)x What does 1.04 represen
zmey [24]
The number 1.04 represents the rate at which the house appreciates, or increases in its price annually.

As according to the values of an exponential equation, which is represented by this: y=ab^x, the a value represents the original price, the b value represents the rate of growth/decay (if growth, you add 1 to the rate, if decay, you subtract the rate from 1), and x represents the amount of times it decays or grows.

As according to the function <span> f(x) = 242,000(1.04)^x, 242,000 is the original price and 1.04 is the rate of growth since 1 has been added to the the 4% annual growth.</span>
5 0
3 years ago
Other questions:
  • The radius of a sphere is increasing at a rate of 2 mm/s. How fast is the volume increasing when the diameter is 100 mm?
    8·1 answer
  • Find the solution set
    12·1 answer
  • Find each angle measure
    9·1 answer
  • A furniture store sold 34 tables, 46 bookcases, and 14 beds. How many pieces of furniture did the store sell in all
    15·2 answers
  • Who wants to talk and be friends
    8·2 answers
  • the length of a box of colored pencils is 6 inches, the width is 4 inches, and the height is 3/8 inch. what is the volume of the
    11·2 answers
  • Find the Solution of the equation
    14·1 answer
  • Factor 15x + 35 using the GCF.
    5·1 answer
  • Which statement best describes how to determine whether f(x) = x² – X + 8 is an even function?
    8·1 answer
  • ¿Cuál es el área de un solar rectangular cuyas dimensiones son 12m de largo y 11m de ancho? ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!