Problem 1) xy means "x times y". The multiplication symbol is left out because its implied. You can write x*y if you wish. Or we can say "product of two numbers" since a product in math terms is the result of multiplication.
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Problem 2) x/y means "x divided by y" which is a fraction
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Problem 3)
Writing "x-y" is the same as saying "x minus y"
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Problem 4)
x+y is "x plus y", or we can say "the sum of x and y". The "sum" is "result of adding two or more values"
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Problem 5)
y-x is "y minus x" or we can say "x subtracted from y"
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Problem 6)
y division symbol x is essentially the flip of problem 2. We'd say "y divided by x"
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Problem 7)
x+y = 6 is "the sum of two numbers is 6". See problem 4 above.
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Problem 8)
xy = 6 is "the product of two numbers is 6". This is an extension of problem 1.
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Problem 9)
6x = y is "six times a number equals y" when translated out
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Problem 10)
y = x-6 would translate to "six less than a number is y"
where the "a number" portion is represented by x
Answer:
x=150
y=240
Step-by-step explanation:
*Use simultaneous equation solving
1.Label your equations
x+y=390......1
2x+4y=1260......2
*make one of the unknowns subject of formula, to form equation 2
x=390-y.....3
*sub.3 into 2
2(390-y)+4y=1260
780-2y+4y=1260
2y+780=1260
y=240
sub. y into 3
x=390-y
x=390-240
x=150
Answer:
22
Step-by-step explanation:
a×c=4×7=28
3×b=3×2=6
ac-3b=28-6=22
Answer:
see explanation
Step-by-step explanation:
The 2 marked angles are vertical and congruent, thus
24x = 23x + 5 ( subtract 23x from both sides )
x = 5
Thus angles = 24 × 5 = 120°
<u>Given</u>:
The two angles A and B are vertical angles.
The measure of ∠A is x and the measure of ∠B is 5x - 20.
We need to determine the measure of ∠A.
<u>Value of x:</u>
Since, the angles A and B are vertical angles and the vertical angles are always congruent.
Thus, we have;
Substituting the values, we have;
Adding both sides of the equation by 80, we have;
Thus, the value of x is 20.
<u>Measure of ∠A:</u>
The measure of ∠A can be determined by substituting x = 20 in the measure of angle A.
Thus, we get;
Thus, the measure of ∠A is 20°