4h - 2h + 5 = 19
2h + 5 = 19 -> subtract 5 on both sides
2h = 14 -> divide by 2 on both sides
h = 7
Answer:
h=7
Step-by-step explanation:
4h-2h+5=19
2h+5=19
2h=19-5
2h=14
h=14/2
h=7
are there?
purple marbles
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DI
Answer:
Step-by-step explanation:26 divided by 2 = 18
purple = 18
blue=18
purple = 18-4 = 14
Answer:
$400
Step-by-step explanation:
Hi we have to use the Rule of the Three
The price that we paid represents the 80% of the original prize
Hence we have that
$320⇒80% (.8)
$x⇒100%(.1)
As we know we have to multiply diagonally and divide with the one in the corner
So we have (320)*(1 )=320 and then divide
Hence the original price was $400
Answer:
400
Step-by-step explanation:
320/(1-0.2)=Original price
400x0.8=320
Each student worked on 115 math problems.
Step-by-step explanation:
Given,
Problems solved in 4 hours = 8970
Number of students in competition = 78
As each student solved same number of problems, we will divide the total problems solved by number of students to find the amount of problems solved by one student.
Problems solved by one student =
Problems solved by one student = 115
Each student worked on 115 math problems.
Keywords: division
Learn more about division at:
#LearnwithBrainly
Each student works 115 problems.
Explanation:
I'm going to copy and paste the question here, and bold important info.
"Rayville Elementary sponsors a math competition for 78 students. During the competition, the students work a total of 8,970 math problems in 4 hours. Each student works the same number of problems. How many problems does each student work?"
Now everything not bolded? Forget about it. All you need to know is that there are 78 students. They all do 8,970 # of problems. And all the students do the same amount. Now you just have to divide the # of probs. by the amount of students in the competition, and you have your answer.
8970÷78=115
Hope that helped!