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
Talja [164]
3 years ago
14

A 110 point exam is made up of 50 questions. some questions are worth 2 points others are worth 4 points how many of each type o

f question are on the test?
Its a system of equations answer.
Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0
X - the number of the questions worth 2 points
y - the number of the questions worth 4 points

x+y=50 \\
2x+4y=110 \\ \\ 
\hbox{from the 1st equation:} \\
y=50-x \\ \\
\hbox{substitute 50-x for y in the 2nd equation:} \\
2x+4(50-x)=110 \\
2x+200-4x=110 \\
-2x=-90 \\
x=45 \\ \\
y=50-45=5

The answer:
There are 45 questions worth 2 points and 5 questions worth 4 points.
You might be interested in
Kari and Samantha have determined that their water-balloon launcher works best when they launch the balloon at an angle within 3
Ilia_Sergeevich [38]
<span>|x - 45| = 3; minimum angle: 42 degrees</span>
6 0
3 years ago
Read 2 more answers
Sally has £520
PIT_PIT [208]

Answer:

£132

Step-by-step explanation:

15% of  520 is 78

15% of 360 is 54

78 + 54 = 132

6 0
3 years ago
In the problem 83 - 10 x 5 - 4, which step should you perform first?
Ksivusya [100]
Multiplication comes before any subtraction...so do 10 x 5 first
3 0
3 years ago
Rectangle WXYZ with y axis<br>​
Gre4nikov [31]

Answer:

I dont understand comment on this and i can help you out

Step-by-step explanation:

:)

7 0
3 years ago
Read 2 more answers
Write the polynomial in factored form.
Furkat [3]

Answer:

  4x(x -4)(x +6)

Step-by-step explanation:

The factoring of 4x³ +8x² -96x will be such that the leading coefficient is 4 and the product of all constants is -96. Only one answer choice matches:

  4x(x -4)(x +6)

5 0
3 years ago
Other questions:
  • Trudy works at a job centre.
    9·1 answer
  • A rectangular park is 600 m long and 300 m wide. you walk diagonally across the park from corner to corner. how far do you walk,
    8·1 answer
  • Find the sum of -4 and -3
    10·2 answers
  • What is 5(-3k+5)=-4K+k+1
    13·1 answer
  • If you pay on an account of 1400.00 a year for the past 11 years how much would you have paid into it
    12·2 answers
  • Friday​ night, a pizza parlor sold
    11·1 answer
  • Suppose B is a proper subset of C,
    14·1 answer
  • Can someone help me please? :)
    13·1 answer
  • Is answer 3 the right answer if not explain<br> Why
    7·1 answer
  • Can someone help me pls
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!