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dangina [55]
2 years ago
6

An education center offers a total of 400 math, physics and

Mathematics
1 answer:
Vikentia [17]2 years ago
8 0

Answer: 30

Step-by-step explanation:

3+4+3=10 400/10=40 so each has 40 so math has 120 120*25=3000 for physics is 4*40 so 160 160*20=3200 9800-3000-3200=3600 3*40=120 3600/120=30

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Gala2k [10]

Answer:

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Step-by-step explanation:

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3 years ago
when you reverse the digits in a certain two-diget number you increase it value by 27. What is the number if the sum of its digi
Fynjy0 [20]
The number is = 10x+y
if reverse the digits, the number is: 10y+x
The sum fo its digits is =  x+y=5
I suggest this system of equations:
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x=5-y

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3 0
2 years ago
Read 2 more answers
Find the radius of a circle if it’s circumference is numerically equal to its area
kotykmax [81]

Answer:

Step-by-step explanation:

hello :

if : r  the radius  ( r ≠0)

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5 0
3 years ago
Isaiah has h baseball cards. Michael gas 7 more baseball cards than Isaiah. Write an expression for the number baseball cards th
deff fn [24]

Answer:

h + 7

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