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
Mr. Alvarez makes a walkway out of 3 cement slabs. He uses 14 cubie feet of cement to make the walkway. Each square slab has a v
AysviL [449]

Answer:


Step-by-step explanation:

answer <u><em>volume cubic centimetre priority</em></u>

<em>volume=4+4=8</em>

<em>14-8=</em>

<u><em>6 cubic feet. </em></u>

<u><em>thanx</em></u>

<u><em>mark as brainlest</em></u>

6 0
3 years ago
Read 2 more answers
For <img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%204x%2B1" id="TexFormula1" title="f(x) = 4x+1" alt="f(x) = 4x+1" align="abs
Kamila [148]

\bf \begin{cases} f(x)=4x+1\\ g(x)=x^2-5\\[-0.5em] \hrulefill\\ (f\circ g)(4)=f(~~g(4)~~) \end{cases} \\\\[-0.35em] ~\dotfill\\\\ g(4)=(4)^2-5\implies g(4)=16-5\implies \boxed{g(4)=11} \\\\\\ f(~~g(4)~~)\implies f(11)\implies f(11)=4(11)+1\implies \blacktriangleright f(11)=45\blacktriangleleft

3 0
3 years ago
Read 2 more answers
NEED HELP ASAP ILL GIVE YOU BRAINLIST
lesya [120]

Answer is D  You'll do the diameter squared then you multiply by π

6 0
3 years ago
Read 2 more answers
Janelle has 4 hours to spend training for an upcoming race. She completes her training by running full speed the distance of the
natima [27]
If the amount of time taken to go said distance is x and the amount of time taken to go back said distance is y, then the amount of miles total is 7x+3y due to that for every hour, she adds 7 miles when going there and 3 miles for walking back. In addition, since the total amount of time is 4 hours, x+y=4 as the total time spent as well as 7x=3y due to that they're the same distance. 
x+y=4
7x=3y
Dividing the second equation by 7, we get x=3y/7. Plugging that into the first equation, we get 3y/7+y=4=10y/7 (since y=7y/7). Multiplying both sides by 7 and then dividing both by 10, we get 28/10=2.8=y in hours. Since 0.1 hours is 60/10=6 minutes, and 0.8/0.1=8, 6*8=48 minutes=0.8 hours, meaning that she should plan to spend 2 hours and 48 minutes walking back 

8 0
3 years ago
Linear function need help ASAP
ElenaW [278]

Answer:

y=1/3x+2

Step-by-step explanation:

Because it is linear equation in 2 variables

4 0
3 years ago
Read 2 more answers
Other questions:
  • The population of fish in a certain lake follows the logistic growth function , where t is the time in years.
    12·1 answer
  • Hannah is at the supermarket to buy carrots and potatoes. If she buys 2 pounds of carrots and 3 pounds of potatoes, it will cost
    10·2 answers
  • Could one prove that a shape is a square by finding the slopes of each side?
    6·1 answer
  • Please i need help like right now
    10·1 answer
  • (whoever answers correctly gets brainly)
    11·1 answer
  • Student Council has 24 boys as members and 16 girls as members. Using this ratio,
    8·2 answers
  • Please help me fast 20 points
    9·1 answer
  • Find a and b if <br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B5%7D%20%20%2B%20%20%5Csqrt%7B3%7D%20%20%5Cdiv%20%20%5Csqrt%7B
    12·2 answers
  • WILL GIVE BRAINLIEST
    10·2 answers
  • 1/2a+2/3b=50 when b=30?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!