253 students went on a field trip. Six

Mathematics

2 answers:

iris [78.8K]3 years ago

3 0

Answer:38

Step-by-step explanation:

if there were 253 children and 6 buses and f 25 children had to go by car then,

253-25=228

228/6=38

madam [21]3 years ago

3 0

There are 38 students on each bus

Solution:

Given that,

Total number of students went to trip = 253

Number of buses filled = 6

Number of students traveled in car = 25

To find : Number of students in each bus

Total number of students = students traveled by buses + students traveled by cars.

253 students = number of buses $\times$ number of students per bus + 25 students

253 – 25 = 6 $\times$ number of students per bus

6 $\times$ number of students per bus = 228

Number of students per bus = $\frac{228}{6} = 38$

Hence, there are 38 students in each bus

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3 years ago

(x-1)^2+(2-x)^2-3(x-5)*(x-5)

Natali5045456 [20]

Answer:

$-x^2+24x-70$

Step-by-step explanation:

$(x-1)^2+(2-x)^2-3(x-5)*(x-5)\\=> (x - 1)^2 + (2 - x)^2 - 3(x - 5)^2\\=> x^2 - 2x + 1 + 4 - 4x + x^2 - 3(x - 5)^2\\=> x^2 - 2x + 5 - 4x + x^2 - 3(x - 5)^2\\=> x^2 - 6x + 5 + x^2 - 3(x - 5)^2\\=> 2x^2 - 6x+5 - 3(x - 5)^2\\=> 2x^2 - 6x+5 - 3(x^2 - 10x + 25)\\=> 2x^2 - 6x+5 - 3x^2+30x-75\\=> -x^2 - 6x + 5 + 30x - 75\\=> -x^2 + 24x + 5-75\\=> -x^2+24x-70$