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
emmasim [6.3K]
3 years ago
15

(PLEASE ANSWER!!) a college student completed some courses worth 4 credits and some courses worth 3 credits. the student earned

a total of 59 credits after completing 18 courses. how many courses worth 3 credits did the student complete?
Mathematics
1 answer:
Ierofanga [76]3 years ago
5 0

The college student took 13 courses of 3 credit hours.

Step-by-step explanation:

Given,

Total credits = 59

Total courses = 18

Let,

Number of 3 credit hour courses = x

Number of 4 credit hour courses = y

According to given statement;

x+y=18     Eqn 1

3x+4y=59   Eqn 2

We will eliminate y to find the number of 3 credit hour courses, therefore,

Multiplying Eqn 1 by 4

4(x+y=18)\\4x+4y=72\ \ \ Eqn\ 3

Subtracting Eqn 2 from Eqn 3

(4x+4y)-(3x+4y)=72-59\\4x+4y-3x-4y=13\\x=13

The college student took 13 courses of 3 credit hours.

Keywords: linear equation, subtraction

Learn more about linear equations at:

  • brainly.com/question/10708697
  • brainly.com/question/10710410

#LearnwithBrainly

You might be interested in
Rewrite the Fraction 94/5 as a decimal
xenn [34]
94/5 = 18.8
since 90/5 is 18
and 4/5 is .8
just add those together
bam 
7 0
3 years ago
Read 2 more answers
What is the equation of a line that is parallel to y=2/3x-7 and passes through (12,2)?
Ganezh [65]

Answer:

<h2>The answer is option A</h2>

Step-by-step explanation:

Equation of a line is y = mx + c

where

m is the slope

c is the y intercept

To find the equation of the parallel line we must first find the slope of the original line

From the question the original line is

y = 2/3x - 7

Comparing with the general equation above

Slope = 2/3

Since the lines are parallel their slope are also the same

Slope of parallel line = 2/3

So the equation of the line using point

(12 , 2 ) and slope 2/3 is

y - 2 =  \frac{2}{3} (x - 12) \\ y - 2 =  \frac{2}{3} x - 8 \\ y =  \frac{2}{3} x - 8 + 2

We have the final answer as

y =  \frac{2}{3} x - 6 \\

Hope this helps you

5 0
3 years ago
Read 2 more answers
1, 1/2, 1/4, 1/8, ... What's the pattern rule and the next three numbers? Please someone help me! ​
mel-nik [20]

Answer:

1/16

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Is that the answer please help no links no links please help
fenix001 [56]

Answer:

360

Step-by-step explanation:

V= L•W•H/3

10×12×9÷3

3 0
2 years ago
X + 8 =-12<br> ale<br> Soy unni<br> w
zimovet [89]

Answer:

x=-20

Step-by-step explanation:

x+8−8=−12−8

x=−20

3 0
2 years ago
Read 2 more answers
Other questions:
  • The area of a rectangle is 56 square feet. The ratio of the width to the length is 2:7. Find the length and the width.
    13·1 answer
  • Sarianna is saving up to but a pet lizard. The lizard costs $12.35, the food costs $8.40, and the cage costs $26. If she has $20
    9·1 answer
  • What is the expression in factored form? 16x^2+8x
    5·2 answers
  • Jala put $600 in an interest bearing account with a annual compound interest rate of 5%. Jala determined that after seven years,
    6·2 answers
  • Complete this statement: 8 ounces is to one cup as __________ ounces is to 10 cups.
    6·2 answers
  • Plz help will mark brainliest if correct answer only ​
    14·1 answer
  • Simplify the expression.
    15·1 answer
  • Help me please I’m confused.
    5·1 answer
  • At the beginning of the school year, 396 students attended the first football game. Attendance at the next was 505 students. Est
    11·1 answer
  • I need help w this pls
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!