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
omeli [17]
3 years ago
9

On the Algebra test the number of students who got a grade A was three more than twice the number of students who got lower grad

es. How many A's were there if total number of students in the Algebra class is 24?
Mathematics
1 answer:
svlad2 [7]3 years ago
4 0
X= # students who got lower grades
2x+3= # students with grade A

STEP 1:
Add the two sets above equal to 24.

x + (2x + 3)= 24
combine like terms

3x + 3= 24
subtract 3 from both sides

3x= 21
divide both sides by 3

x= 7 (# students lower than A)


STEP 2:
substitute x value from step 1 to find # grade A students

=2x + 3
=2(7) + 3
=14 + 3
=17 (# grade A students)


CHECK:
x + (2x + 3)= 24
7 + 2(7) + 3= 24
7 + 14 + 3= 24
24= 24


ANSWER: There were 17 students with grade A.

Hope this helps! :)
You might be interested in
Find the simple interest earned on a deposit of $2,800 that earns 2% annual interest after 5 years.
Anvisha [2.4K]
It’s 280 I believe...
6 0
3 years ago
Can someone help me with this question?
likoan [24]
1 frequency is 1
2 is 3
3 is 4
4 is 3
last is 3

that's all I understand
hope it helped
4 0
3 years ago
-3(x - 2) - (2x - 3) = 5 - (4x - 2)
STatiana [176]

Answer:

x=2

Step-by-step explanation:

-3*(x-2)-(2*x-3)-(5-(4*x-2))=0

((0 -  3 • (x - 2)) -  (2x - 3)) -  (7 - 4x)  = 0

2 - x  = 0

-x+2 = 0

Subtract  2  from both sides of the equation :

                     -x = -2

Multiply both sides of the equation by (-1) :  x = 2

4 0
3 years ago
Read 2 more answers
Assume that y varies directly with x. If y = -5 when
steposvetlana [31]

Answer:

Thus, the value of x = -36 when y = 15

Step-by-step explanation:

We know that if y varies directly with x, we can express the relationship such as

y ∝ x

y = kx

k = y/x

where 'k' is called constant of variation.

Given

y = -5

x = 12

Using the equation

k = y/x = -5/12

Thus, the value of k = -5/12

Finding x when y = 15

y = 15

k = -5/12

substituting y = 15 and k = -5/12 in the equation

y = kx

15 = -5/12 (x)

15×12 = -5x

180 = -5x

divding both sides by -5

-5x/-5 = 180/-5

x = -36

Thus, the value of x = -36 when y = 15

8 0
3 years ago
On a map, 1 cm = 5 km. The distance between the shopping mall and the movie theater measures 6.7 cm. What is the actual distance
Fynjy0 [20]

Answer:

33.5 km

Step-by-step explanation:

If 1cm = 5km, then you multiply 6.7 by 5 to get distance, which would be 33.5 km.

(hope this helps :P)

6 0
3 years ago
Read 2 more answers
Other questions:
  • Breaking stuff let {xi} n i=1 be a sample of random variables of size n with the property that xi ∼ n (µ, σ2 ) and cov(xi , xj )
    13·1 answer
  • 7. Given :
    11·2 answers
  • The perimeter of a square field is 252 yards. how long is each side?
    10·1 answer
  • 1. x/6 + 4 = 15
    6·1 answer
  • Jeremy is saving money from a tutoring job after the first two weeks he said 135 assume the situation is proportionally use the
    14·1 answer
  • (Discrete Math)
    15·1 answer
  • Write an inequality that represents the statement "x is greater than -3 and less than or equal to 4."
    9·1 answer
  • 16. Simplify the expression.<br> (6 + 47) + (4 + 61)<br> -10 - 10<br> 10 + 10i<br> 201<br> 10 - 10
    13·1 answer
  • Model of a planned baseball stadium is 2 ft wide. The actual stadium will be 200 yd wide. What is the scale factor?
    13·1 answer
  • The temperature in London is 4 degrees Celsius on Monday. The temperature in Moscow is -12 degrees Celsius. What is the differen
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!