Answer:
B) AD=30m
Step-by-step explanation:
AG:AD=2:3
Given AG=20m
Then;
Rewrite as ratio to get;
Cross multiply;
Divide through by 2;
The solution of the student work is wrong
The remainder number should be 10
The division operation is one of the basic arithmetic operations
Common signs used are or
The division is written by placing the numerator above the denominator with a horizontal line between them or use a slash with the numerator's position and the denominator is parallel
The division is actually an iterative subtraction operation (as many as the number of divisors)
Division is the opposite of multiplying
The general form of division can be stated by:
example:
7: 3 = 2 + 1
The form of division can also be expressed in terms of fractions
In the number above, the form of fraction obtained is the form of mixed fractions
Mixed fractions consist of integers and ordinary fractions
Division operation statement:
"7 divided by 3 equals 2 remainder 1
mixed fractional form
Mixed fractions can be expressed as ordinary fractions
=
When dividing 878 by 31, a student finds a quotient of 28 with a remainder of 11.
Division operation statement:
"878 divided by 31 equals 28 remainder 11
This division operation is declared true if the result of:
(divisor x quotient) + remainder = dividend
So from the students work above we can check:
(31x28) +11 = 878
868 + 11 = 878
879 ≠ 878
So the results of the division of tasks from students are wrong
The remainder should be 10
878- (31x28) = 10
Divide 80 in a ratio of 3: 2
percent of 19.5 is 70.59
The average weight of the top 5 fish
Keywords: division, fraction,
Answer:
y = 12
Step-by-step explanation:
We first need to solve for x
(6x - 11)° and (4x + 23)° are vertically opposite angles and are congruent, so
6x - 11 = 4x + 23 ( subtract 4x from both sides )
6x - 4x - 11 = 4x - 4x + 23 ( simplify both sides )
2x - 11 = 23 ( add 11 to both sides )
2x - 11 + 11 = 23 + 11 ( simplify both sides )
2x = 34 ( divide both sides by 2 )
x = , that is
x = 17
Then
4x + 23 = 4(17) + 23 = 68 + 23 = 91
(9y - 19)° and 91 are a linear pair and sum to 180°
sum the 2 angles and equate to 180
9y - 19 + 91 = 180 ( simplify left side )
9y + 72 = 180 ( subtract 72 from both sides )
9y + 72 - 72 = 180 - 72 ( simplify both sides )
9y = 108 ( divide both sides by 9 )
y = , that is
y = 12