Let the number of third-graders be x.
We have been given that the number of fourth-graders is 47.
Total number of students = 92.
Therefore, x + 47 = 92
x = 92 - 47
x = 45
Hence, there are 45 third-grade students.
Answer: Discount = $39.98
Step-by-step explanation:
Given coupon discount of 25% off
Discount will be 25% of cost of the coat
Cost of the coat = $159.90
Discount = 25/100 × 159.90
= $39.975
Approximately $39.98
Answer:
x = 6.2608
Step-by-step explanation:
23x=144
That point will be where the perpendicular line through the origin intersects the given line.
.. (-1/4)x = 4x +3
.. -3 = (17/4)x
.. -12/17 = x
The point on the given line that is closest to the origin is (-12/17, 3/17).
Answer:
Step-by-step explanation:
Isolate x on one side of the equation.
First, do parenthesis.
4(2+3)
Add.
3+2=5
Multiply.
4*5=20
Rewrite the equation problem.
x+20<5x
Secondly, subtract 20 from both sides.
x+20-20<5x-20
Solve.
x<5x-20
Thirdly, subtract 5x from both sides.
x-5x<5x-20-5x
Solve.
5-1=4
-4x<-20
Then, multiply -1 from both sides.
(-4x)(-1)>(-20)(-1)
Solve.
(-4x)(-1)=4x
(-20)(-1)=20
4x>20
Divide by 4 from both sides.
4x/4>20/4
Solve.
20/4=5
x>5
The solutions is 5, therefore, the correct answer is x>5.